CN105933172A - Cloud computing based disease self-diagnosis service construction system - Google Patents
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Abstract
The invention discloses a cloud computing based disease self-diagnosis service construction system, which comprises a data resource collection module, a task planning module, a credible combination assessment module and a disease diagnosis model generation module, wherein the data resource collection module comprises a modeling submodule, a resource replication submodule and a resource search submodule, and the credible combination assessment module comprises an assessment submodule and an assessment optimization submodule. The cloud computing based disease self-diagnosis service construction system is provided with the data resource collection module, thereby facilitating users to use data resources through matching service description information, further increasing the coverage rate of data resource information in the network, and improving the search efficiency of medical record data resources; and the cloud computing based disease self-diagnosis service construction system is provided with the credible combination assessment module in order to efficiently realize low-cost disease self-diagnosis services, the credibility of a big data service supporting cloud service combination scheme is improved, and storage and computing resources of the cloud are utilized in a maximum benefit manner. In addition, the assessment time is saved, and the assessment speed is improved.
Description
Technical field
The present invention relates to medical field, be specifically related to disease self diagnosis service construction system based on cloud computing.
Background technology
Data resource big to medical treatment is managed and builds the big data, services of medical treatment need to solve both sides technical problem: on the one hand,
The software of medical field typically should be played manufacturer's exploitation, based on different hardware and software platforms, in Floor layer Technology and business by different ingeniously
There is isomery vertebra widely in flow process aspect.Although the in store big data resource of abundant medical treatment in these systems (as electronic health record,
Medical image etc.), but the information island phenomenon formed due to the isomerism between system so that in different medical user colonies
Between to realize data sharing extremely difficult.How by integrating the big data resource of the medical treatment in these systems, it is one and there is challenge
The problem of vertebra;On the other hand, use these abundant the biggest data resources of doctor to build the big data, services of medical treatment, need on-demand extension
Storage resource with calculate the support of resource, processing and analyzing and the structure of big data, services brings cost to put into big data
And the problem in terms of maintenance.
Summary of the invention
For the problems referred to above, the present invention provides disease self diagnosis service construction system based on cloud computing.
The purpose of the present invention realizes by the following technical solutions:
Disease self diagnosis service construction system based on cloud computing, including:
(1) data resource collect module, for according to disease self diagnosis service demand, collection be distributed in cloud each hospital,
In clinic and the application of each medical software, the electronic health record data of patient, form the big data resource of electronic health record;
(2) mission planning module, the processing procedure for data resource big to electronic health record is divided into data storage subtask, rope
Draw calculating subtask and Data Management Analysis calculates subtask, and meet the cloud service resource of its demand for each subtask coupling
Pond, forms cloud service assembled scheme, to obtain storage resource required in big data handling procedure or to calculate resource;
(3) credible combined evaluation module: the mission planning of the big data, services for generating according to mission planning module, performs cloud
The assessment of Services Composition scheme, selects optimum cloud service assembled scheme, provides storage for disease self diagnosis service and calculates resource,
It includes assessing submodule and assessment optimizes submodule;
The operation that described assessment submodule specifically performs is:
A, according to cloud service resource pool SPvWith corresponding service qualityHistorical record, carries out the effectiveness of cloud service assembled scheme
Each parameter of utility function in the modeling of function X initialization model, if the mission planning obtained by mission planning module
G={G1,G2,G3, correspondingIt is constrained to C={C1,C2,C3, each subtask GvCorresponding cloud service resource pool SPvAltogether
There is mvIndividual service, for cloud service resource pool SPvIn each service SPvω, it comprisesHistorical record number is Lvω,
By SPvγ the feasible cloud service assembled scheme formed is CSγ, v ∈ [1,3], ω ∈ [1, mv], Definition Model is:
Wherein,For kth dimensionMaximum,For kth dimensionMinima, SPvωRh is
It is under the jurisdiction of SPvωOneHistorical record, xvω-hRepresent the parameter of utility function in model;
B, each feasible cloud service assembled scheme is ranked up by order from small to large according to utility function value, before selecting Z can
Services Composition scheme of racking is set according to application example as preferred cloud service assembled scheme, the value of Z;
C, each group of preferred cloud service assembled scheme is calculated the meansigma methods of its utility function value;
D, the meansigma methods of selection utility function value are that maximum preferred cloud service assembled scheme is as optimum cloud service assembled scheme;
Described assessment optimizes submodule and is able to record that the utility function value of preferred cloud service assembled scheme and optimum combination cloud service
Scheme, and learn as sample, if new preferred cloud service assembled scheme had occurred, then directly invoke it
Functional value;
(4) diagnosing model generation module, for according to optimum cloud service assembled scheme, sets up electronic health record index, and
Use big data analysing method to calculate and obtain disease self diagnosis model diagnosing model.
Wherein, described electronic health record index includes that case history inverted index, case history filter index and case history details index, described case history
Inverted index is used for retrieving the case history identical with user's disease symptoms from the big data resource of electronic health record according to user's disease symptoms,
Described case history filters index and filters the case history inconsistent with user's Sex, Age and age, institute for the sex according to user and age
State case history details to index for the detailed content retrieving case history from the big data resource of electronic health record.
Wherein, described data resource collects modeling submodule, resources duplication submodule and the resource lookup that module includes being sequentially connected with
Submodule, the overlay network that the resource node under cloud environment is formed by described modeling submodule for using Unstructured Peer-to-Peer Network
Being modeled, described resources duplication submodule carries out answering of resource information between each neighbor node in described overlay network
System, described resource lookup submodule meets the electronic health record data resource of application demand for lookup coupling;
If xiFor a peer node in Unstructured Peer-to-Peer Network, { xi1,xi2,…ximIt is xiNeighbor node collection,For this
Ground resource pool,For neighbor node resource information pond, i ∈ [1, n], n are the sum that peer-to-peer network comprises node, and m represents that neighbours save
The number of point, m < n;
A, described resources duplication submodule use based on the data asset information master between neighbor node when carrying out the duplication of resource information
Dynamic replication protocol:
Work as xiWhen adding overlay network, by xiWith { xl1,xl2,…xlmSet up connection, xiBasis furtherIn information on services,
Create the duplication message of a resource information, and described duplication message is transmitted to all neighbor node xlmReplicate, if reciprocity
Any node in network receives one when replicating message, judges whether to receive described multiple according to the number information replicating message
Message processed, if receiving, abandons described duplication message, if receiving first, then according to resource information and the node replicating message
Positional information, updatesIn content, and according to replicate message vital values, determine forward or abandon described duplication message, its
In, resource information needs periodically to synchronize between neighbor node;
The operation that B, described resource lookup submodule specifically perform is:
If initiating inquiry request MjNode be xj, at xjNeighbor node set according to Probability pjRandom choose go out to constant pitch
Point set is pj×{xj1,xj2,…xjm},j∈[1,n];
When peer node xiReceive xjInquiry request M sentjTime, checkWithIn whether contain and meet inquiry request MjElectricity
Sub-medical record data information, if so, according to described electronic health record data message and the position of electronic health record data message place peer node
Confidence ceases, and creates the response message of inquiryAnd according to xjPositional information, by described response messageReturn to xj, so
After by xjVital values subtract 1, if xjVital values be 0, abandon inquiry request MjIf not, 0, use Q learning algorithm to calculate
pj×{xj1,xj2,…xjmThe Q-value of each peer node in }, by inquiry request MjIt is transmitted to pj×{xj1,xj2,…xjmIn }, Q-value is maximum
Node, Probability pjSpan when network is leisurely and carefree be (5,8], the span when network congestion be [0,3);
Set the computing formula of Q-value as:
Wherein, QnewRepresent the new value of Q, QoldRepresent the old value of Q, QlearnRepresenting the value learnt, α represents learning rate,
β represents congested factor,Represent moment t node xjμBuffer queue in pending inquiry request message number,Represent
pj×{xj1,xj2,…xjmNode x in }jμProcess the time of an inquiry request message defined,Represent pj×
{xj1, xj2... xjmNode x in }jμProcess the time that an inquiry request message is actually required;Function I [x] is at x > 0 time value
Being 1, during x≤0, value is 0, and the span of α is [0.25,0.3], and the span of β is [0.45,0.5].
The invention have the benefit that
1, data resource is set and collects module, mission planning module, credible combined evaluation module and diagnosing model generation module,
Achieve the structure of disease self diagnosis service system;
2, arranging modeling submodule, resources duplication submodule and the resource lookup submodule being sequentially connected with, it is non-structured right to use
On network as the topological organization structure of data resource node under cloud environment, and service encapsulation of data resource, facilitate user and lead to
Overmatching service description information uses data resource, further increases data asset information coverage rate in a network, improves
The efficiency of medical record data resource lookup;
3, for efficiently realizing the disease self diagnosis service of low cost, it is provided with credible combined evaluation module, improves the big data of support
The credibility of the cloud service assembled scheme of service, it is achieved maximum benefitization ground uses the storage in high in the clouds and calculates resource, and employing is commented
Estimate optimization submodule, saved the evaluation time, improve estimating velocity.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for
Those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtains the attached of other according to the following drawings
Figure.
Fig. 1 is the connection diagram of each module of the present invention;
Fig. 2 is the workflow diagram that the present invention assesses submodule.
Reference:
Data resource collect module 1, mission planning module 2, credible combined evaluation module 3, diagnosing model generation module 4,
Modeling submodule 11, resources duplication submodule 12, resource lookup submodule 13, assessment submodule 31, assessment optimize submodule
32。
Detailed description of the invention
The invention will be further described with the following Examples.
Embodiment 1
See Fig. 1, Fig. 2, the disease self diagnosis service construction system based on cloud computing of the present embodiment, including:
(1) data resource collect module 1, for according to disease self diagnosis service demand, collection be distributed in cloud each hospital,
In clinic and the application of each medical software, the electronic health record data of patient, form the big data resource of electronic health record;
(2) mission planning module 2, for the processing procedure of data resource big to electronic health record be divided into data storage subtask,
Index calculates subtask and Data Management Analysis calculates subtask, and meets the cloud service money of its demand for each subtask coupling
Pond, source, forms cloud service assembled scheme, to obtain storage resource required in big data handling procedure or to calculate resource;
(3) credible combined evaluation module 3: the mission planning of the big data, services for generating according to mission planning module 2, holds
The assessment of Services Composition scheme of racking, selects optimum cloud service assembled scheme, provides storage for disease self diagnosis service and calculates
Resource, it includes assessing submodule 31 and assessment optimizes submodule 32;
The operation that described assessment submodule 31 specifically performs is:
A, according to cloud service resource pool SPvWith corresponding service qualityHistorical record, carries out the effectiveness of cloud service assembled scheme
Each parameter of utility function in the modeling of function X initialization model, if the mission planning obtained by mission planning module 2
G={G1, G2, G3, correspondingIt is constrained to C={C1, C2, C3, each subtask GvCorresponding cloud service resource pool SPvAltogether
There is mvIndividual service, for cloud service resource pool SPvIn each service SPvω, it comprisesHistorical record number is Lvω,
By SPvγ the feasible cloud service assembled scheme formed is CSγ, v ∈ [1,3], ω ∈ [1, mv], Definition Model is:
Wherein,For kth dimensionMaximum,For kth dimensionMinima, SPvωRh is
It is under the jurisdiction of SPvωOneHistorical record, xvω-hRepresent the parameter of utility function in model;
B, each feasible cloud service assembled scheme is ranked up by order from small to large according to utility function value, before selecting Z can
Services Composition scheme of racking is set according to application example as preferred cloud service assembled scheme, the value of Z;
C, each group of preferred cloud service assembled scheme is calculated the meansigma methods of its utility function value;
D, the meansigma methods of selection utility function value are that maximum preferred cloud service assembled scheme is as optimum cloud service assembled scheme;
Described assessment optimizes submodule 32 and is able to record that utility function value and the optimum combination cloud clothes of preferred cloud service assembled scheme
Business
Scheme, and learn as sample, if new preferred cloud service assembled scheme had occurred, then directly invoke it
Functional value;
(4) diagnosing model generation module 4, for according to optimum cloud service assembled scheme, sets up electronic health record index,
And
Use big data analysing method to calculate and obtain disease self diagnosis model diagnosing model.
Wherein, described electronic health record index includes that case history inverted index, case history filter index and case history details index, described case history
Inverted index is used for retrieving the case history identical with user's disease symptoms from the big data resource of electronic health record according to user's disease symptoms,
Described case history filters index and filters the case history inconsistent with user's Sex, Age and age, institute for the sex according to user and age
State case history details to index for the detailed content retrieving case history from the big data resource of electronic health record.
Wherein, described data resource collects modeling submodule 11, resources duplication submodule 12 and that module 1 includes being sequentially connected with
Resource lookup submodule 13, described modeling submodule 11 is for using Unstructured Peer-to-Peer Network to the resource node under cloud environment
The overlay network formed is modeled, and described resources duplication submodule 12 is between each neighbor node in described overlay network
Carrying out the duplication of resource information, described resource lookup submodule 13 meets the electronic health record data of application demand for lookup coupling
Resource;
If xiFor a peer node in Unstructured Peer-to-Peer Network, { xi1, xi2... ximIt is xiNeighbor node collection,For this
Ground resource pool,For neighbor node resource information pond, i ∈ [1, n], n are the sum that peer-to-peer network comprises node, and m represents that neighbours save
The number of point, m < n;
A, described resources duplication submodule 12 use when carrying out the duplication of resource information to be believed based on the data resource between neighbor node
Breath Active Replication agreement:
Work as xiWhen adding overlay network, by xiWith { xl1, xl2... xlmSet up connection, xiBasis furtherIn information on services,
Create the duplication message of a resource information, and described duplication message is transmitted to all neighbor node xlmReplicate, if reciprocity
Any node in network receives one when replicating message, judges whether to receive described multiple according to the number information replicating message
Message processed, if receiving, abandons described duplication message, if receiving first, then according to resource information and the node replicating message
Positional information, updatesIn content, and according to replicate message vital values, determine forward or abandon described duplication message, its
In, resource information needs periodically to synchronize between neighbor node;
The operation that B, described resource lookup submodule 13 specifically perform is:
If initiating inquiry request MjNode be xj, at xjNeighbor node set according to Probability pjRandom choose go out to constant pitch
Point set is pj×{xj1, xj2... xjm, j ∈ [1, n];
When peer node xiReceive xjInquiry request M sentjTime, checkWithIn whether contain and meet inquiry request MjElectricity
Sub-medical record data information, if so, according to described electronic health record data message and the position of electronic health record data message place peer node
Confidence ceases, and creates the response message of inquiryAnd according to xjPositional information, by described response messageReturn to xj, so
After by xjVital values subtract 1, if xjVital values be 0, abandon inquiry request MjIf not, 0, use Q learning algorithm to calculate
pj×{xj1, xj2... xjmThe Q-value of each peer node in }, by inquiry request MjIt is transmitted to pj×{xj1, xj2... xjmIn }, Q-value is maximum
Node, Probability pjSpan when network is leisurely and carefree be (5,8], the span when network congestion be [0,3);
Set the computing formula of Q-value as:
Wherein, QnewRepresent the new value of Q, QoldRepresent the old value of Q, QlearnRepresenting the value learnt, α represents learning rate,
β represents congested factor,Represent moment t node xjμBuffer queue in pending inquiry request message number,Represent
pj×{xj1, xj2... xjmNode x in }jμProcess the time of an inquiry request message defined,Represent pj×
{xj1, xj2... xjmNode x in }jμProcess the time that an inquiry request message is actually required;Function I [x] is at x > 0 time value
Being 1, during x≤0, value is 0, and the span of α is [0.25,0.3], and the span of β is [0.45,0.5].
The present embodiment arranges data resource and collects module 1, mission planning module 2, credible combined evaluation module 3 and medical diagnosis on disease mould
Type generation module 4, it is achieved that the structure of disease self diagnosis service system;Modeling submodule 11, resource that setting is sequentially connected with are multiple
System module 12 and resource lookup submodule 13, use non-structured peer-to-peer network as data resource node under cloud environment
Topological organization structure, and service encapsulation of data resource, facilitate user and use data resource by coupling service description information,
Further increase data asset information coverage rate in a network, improve the efficiency of medical record data resource lookup;For efficient real
The disease self diagnosis service of existing low cost, is provided with credible combined evaluation module 3, improves the cloud service supporting big data, services
The credibility of assembled scheme, it is achieved maximum benefitization ground uses the storage in high in the clouds and calculates resource, and uses assessment to optimize submodule
32, save the evaluation time, improve estimating velocity;The present embodiment value α=0.25, β=0.45, medical record data resource is looked into
Efficiency is looked for improve 3.5%.
Embodiment 2
See Fig. 1, Fig. 2, the disease self diagnosis service construction system based on cloud computing of the present embodiment, including:
(1) data resource collect module 1, for according to disease self diagnosis service demand, collection be distributed in cloud each hospital,
In clinic and the application of each medical software, the electronic health record data of patient, form the big data resource of electronic health record;
(2) mission planning module 2, for the processing procedure of data resource big to electronic health record be divided into data storage subtask,
Index calculates subtask and Data Management Analysis calculates subtask, and meets the cloud service money of its demand for each subtask coupling
Pond, source, forms cloud service assembled scheme, to obtain storage resource required in big data handling procedure or to calculate resource;
(3) credible combined evaluation module 3: the mission planning of the big data, services for generating according to mission planning module 2, holds
The assessment of Services Composition scheme of racking, selects optimum cloud service assembled scheme, provides storage for disease self diagnosis service and calculates
Resource, it includes assessing submodule 31 and assessment optimizes submodule 32;
The operation that described assessment submodule 31 specifically performs is:
A, according to cloud service resource pool SPvWith corresponding service qualityHistorical record, carries out the effectiveness of cloud service assembled scheme
Each parameter of utility function in the modeling of function X initialization model, if the mission planning obtained by mission planning module 2
G={G1,G2,G3, correspondingIt is constrained to C={C1,C2,C3, each subtask GvCorresponding cloud service resource pool SPvAltogether
There is mvIndividual service, for cloud service resource pool SPvIn each service SPvω, it comprisesHistorical record number is Lvω,
By SPvγ the feasible cloud service assembled scheme formed is CSγ, v ∈ [1,3], ω ∈ [1, mv], Definition Model is:
Wherein,For kth dimensionMaximum,For kth dimensionMinima, SPvωRh is
It is under the jurisdiction of SPvωOneHistorical record, xvω-hRepresent the parameter of utility function in model;
B, each feasible cloud service assembled scheme is ranked up by order from small to large according to utility function value, before selecting Z can
Services Composition scheme of racking is set according to application example as preferred cloud service assembled scheme, the value of Z;
C, each group of preferred cloud service assembled scheme is calculated the meansigma methods of its utility function value;
D, the meansigma methods of selection utility function value are that maximum preferred cloud service assembled scheme is as optimum cloud service assembled scheme;
Described assessment optimizes submodule 32 and is able to record that utility function value and the optimum combination cloud clothes of preferred cloud service assembled scheme
Business
Scheme, and learn as sample, if new preferred cloud service assembled scheme had occurred, then directly invoke it
Functional value;
(4) diagnosing model generation module 4, for according to optimum cloud service assembled scheme, sets up electronic health record index,
And
Use big data analysing method to calculate and obtain disease self diagnosis model diagnosing model.
Wherein, described electronic health record index includes that case history inverted index, case history filter index and case history details index, described case history
Inverted index is used for retrieving the case history identical with user's disease symptoms from the big data resource of electronic health record according to user's disease symptoms,
Described case history filters index and filters the case history inconsistent with user's Sex, Age and age, institute for the sex according to user and age
State case history details to index for the detailed content retrieving case history from the big data resource of electronic health record.
Wherein, described data resource collects modeling submodule 11, resources duplication submodule 12 and that module 1 includes being sequentially connected with
Resource lookup submodule 13, described modeling submodule 11 is for using Unstructured Peer-to-Peer Network to the resource node under cloud environment
The overlay network formed is modeled, and described resources duplication submodule 12 is between each neighbor node in described overlay network
Carrying out the duplication of resource information, described resource lookup submodule 13 meets the electronic health record data of application demand for lookup coupling
Resource;
If xiFor a peer node in Unstructured Peer-to-Peer Network, { xi1,xi2,…ximIt is xiNeighbor node collection,For this
Ground resource pool,For neighbor node resource information pond, i ∈ [1, n], n are the sum that peer-to-peer network comprises node, and m represents that neighbours save
The number of point, m < n;
A, described resources duplication submodule 12 use when carrying out the duplication of resource information to be believed based on the data resource between neighbor node
Breath Active Replication agreement:
Work as xiWhen adding overlay network, by xiWith { xl1,xl2,…xlmSet up connection, xiBasis furtherIn information on services,
Create the duplication message of a resource information, and described duplication message is transmitted to all neighbor node xlmReplicate, if reciprocity
Any node in network receives one when replicating message, judges whether to receive described multiple according to the number information replicating message
Message processed, if receiving, abandons described duplication message, if receiving first, then according to resource information and the node replicating message
Positional information, updatesIn content, and according to replicate message vital values, determine forward or abandon described duplication message, its
In, resource information needs periodically to synchronize between neighbor node;
The operation that B, described resource lookup submodule 13 specifically perform is:
If initiating inquiry request MjNode be xj, at xjNeighbor node set according to Probability pjRandom choose go out to constant pitch
Point set is pj×{xj1,xj2,…xjm, j ∈ [1, n];
When peer node xiReceive xjInquiry request M sentjTime, checkWithIn whether contain and meet inquiry request MjElectricity
Sub-medical record data information, if so, according to described electronic health record data message and the position of electronic health record data message place peer node
Confidence ceases, and creates the response message of inquiryAnd according to xjPositional information, by described response messageReturn to xj, so
After by xjVital values subtract 1, if xjVital values be 0, abandon inquiry request MjIf not, 0, use Q learning algorithm to calculate
pj×{xj1,xj2... xjmThe Q-value of each peer node in }, by inquiry request MjIt is transmitted to pj×{xj1,xj2,…xjmIn }, Q-value is maximum
Node, Probability pjSpan when network is leisurely and carefree be (5,8], the span when network congestion be [0,3);
Set the computing formula of Q-value as:
Wherein, QnewRepresent the new value of Q, QoldRepresent the old value of Q, QlearnRepresenting the value learnt, α represents learning rate,
β represents congested factor,Represent moment t node xjμBuffer queue in pending inquiry request message number,Represent
pj×{xj1,xj2,…xjmNode x in }jμProcess the time of an inquiry request message defined,Represent pj×
{xj1,xj2,…xjmNode x in }jμProcess the time that an inquiry request message is actually required;Function I [x] is at x > 0 time value
Being 1, during x≤0, value is 0, and the span of α is [0.25,0.3], and the span of β is [0.45,0.5].
The present embodiment arranges data resource and collects module 1, mission planning module 2, credible combined evaluation module 3 and medical diagnosis on disease mould
Type generation module 4, it is achieved that the structure of disease self diagnosis service system;Modeling submodule 11, resource that setting is sequentially connected with are multiple
System module 12 and resource lookup submodule 13, use non-structured peer-to-peer network as data resource node under cloud environment
Topological organization structure, and service encapsulation of data resource, facilitate user and use data resource by coupling service description information,
Further increase data asset information coverage rate in a network, improve the efficiency of medical record data resource lookup;For efficient real
The disease self diagnosis service of existing low cost, is provided with credible combined evaluation module 3, improves the cloud service supporting big data, services
The credibility of assembled scheme, it is achieved maximum benefitization ground uses the storage in high in the clouds and calculates resource, and uses assessment to optimize submodule
32, save the evaluation time, improve estimating velocity;The present embodiment value α=0.26, β=0.46, medical record data resource is looked into
Efficiency is looked for improve 3%.
Embodiment 3
See Fig. 1, Fig. 2, the disease self diagnosis service construction system based on cloud computing of the present embodiment, including:
(1) data resource collect module 1, for according to disease self diagnosis service demand, collection be distributed in cloud each hospital,
In clinic and the application of each medical software, the electronic health record data of patient, form the big data resource of electronic health record;
(2) mission planning module 2, for the processing procedure of data resource big to electronic health record be divided into data storage subtask,
Index calculates subtask and Data Management Analysis calculates subtask, and meets the cloud service money of its demand for each subtask coupling
Pond, source, forms cloud service assembled scheme, to obtain storage resource required in big data handling procedure or to calculate resource;
(3) credible combined evaluation module 3: the mission planning of the big data, services for generating according to mission planning module 2, holds
The assessment of Services Composition scheme of racking, selects optimum cloud service assembled scheme, provides storage for disease self diagnosis service and calculates
Resource, it includes assessing submodule 31 and assessment optimizes submodule 32;
The operation that described assessment submodule 31 specifically performs is:
A, according to cloud service resource pool SPvWith corresponding service qualityHistorical record, carries out the effectiveness of cloud service assembled scheme
Each parameter of utility function in the modeling of function X initialization model, if the mission planning obtained by mission planning module 2
G={G1,G2,G3, correspondingIt is constrained to C={C1,C2,C3, each subtask GvCorresponding cloud service resource pool SPvAltogether
There is mvIndividual service, for cloud service resource pool SPvIn each service SPvω, it comprisesHistorical record number is Lvω,
By SPvγ the feasible cloud service assembled scheme formed is CSγ, v ∈ [1,3], ω ∈ [1, mv], Definition Model is:
Wherein,For kth dimensionMaximum,For kth dimensionMinima, SPvωRh is
It is under the jurisdiction of SPvωOneHistorical record, xvω-h represents the parameter of utility function in model;
B, each feasible cloud service assembled scheme is ranked up by order from small to large according to utility function value, before selecting Z can
Services Composition scheme of racking is set according to application example as preferred cloud service assembled scheme, the value of Z;
C, each group of preferred cloud service assembled scheme is calculated the meansigma methods of its utility function value;
D, the meansigma methods of selection utility function value are that maximum preferred cloud service assembled scheme is as optimum cloud service assembled scheme;
Described assessment optimizes submodule 32 and is able to record that utility function value and the optimum combination cloud clothes of preferred cloud service assembled scheme
Business
Scheme, and learn as sample, if new preferred cloud service assembled scheme had occurred, then directly invoke it
Functional value;
(4) diagnosing model generation module 4, for according to optimum cloud service assembled scheme, sets up electronic health record index,
And
Use big data analysing method to calculate and obtain disease self diagnosis model diagnosing model.
Wherein, described electronic health record index includes that case history inverted index, case history filter index and case history details index, described case history
Inverted index is used for retrieving the case history identical with user's disease symptoms from the big data resource of electronic health record according to user's disease symptoms,
Described case history filters index and filters the case history inconsistent with user's Sex, Age and age, institute for the sex according to user and age
State case history details to index for the detailed content retrieving case history from the big data resource of electronic health record.
Wherein, described data resource collects modeling submodule 11, resources duplication submodule 12 and that module 1 includes being sequentially connected with
Resource lookup submodule 13, described modeling submodule 11 is for using Unstructured Peer-to-Peer Network to the resource node under cloud environment
The overlay network formed is modeled, and described resources duplication submodule 12 is between each neighbor node in described overlay network
Carrying out the duplication of resource information, described resource lookup submodule 13 meets the electronic health record data of application demand for lookup coupling
Resource;
If xiFor a peer node in Unstructured Peer-to-Peer Network, { xi1,xi2,…ximIt is xiNeighbor node collection,For this
Ground resource pool,For neighbor node resource information pond, i ∈ [1, n], n are the sum that peer-to-peer network comprises node, and m represents that neighbours save
The number of point, m < n;
A, described resources duplication submodule 12 use when carrying out the duplication of resource information to be believed based on the data resource between neighbor node
Breath Active Replication agreement:
Work as xiWhen adding overlay network, by xiWith { xl1,xl2,…xlmSet up connection, xiBasis furtherIn information on services,
Create the duplication message of a resource information, and described duplication message is transmitted to all neighbor node xlmReplicate, if reciprocity
Any node in network receives one when replicating message, judges whether to receive described multiple according to the number information replicating message
Message processed, if receiving, abandons described duplication message, if receiving first, then according to resource information and the node replicating message
Positional information, updatesIn content, and according to replicate message vital values, determine forward or abandon described duplication message, its
In, resource information needs periodically to synchronize between neighbor node;
The operation that B, described resource lookup submodule 13 specifically perform is:
If initiating inquiry request MjNode be xj, at xjNeighbor node set according to Probability pjRandom choose go out to constant pitch
Point set is pj×{xj1,xj2,…xjm},j∈[1,n];
When peer node xiReceive xjInquiry request M sentjTime, checkWithIn whether contain and meet inquiry request MjElectricity
Sub-medical record data information, if so, according to described electronic health record data message and the position of electronic health record data message place peer node
Confidence ceases, and creates the response message of inquiryAnd according to xjPositional information, by described response messageReturn to xj, so
After by xjVital values subtract 1, if xjVital values be 0, abandon inquiry request MjIf not, 0, use Q learning algorithm to calculate
pj×{xj1,xj2,…xjmThe Q-value of each peer node in }, by inquiry request MjIt is transmitted to pj×{xj1,xj2,…xjmIn }, Q-value is maximum
Node, Probability pjSpan when network is leisurely and carefree be (5,8], the span when network congestion be [0,3);
Set the computing formula of Q-value as:
Wherein, QnewRepresent the new value of Q, QoldRepresent the old value of Q, QlearnRepresenting the value learnt, α represents learning rate,
β represents congested factor,Represent moment t node xjμBuffer queue in pending inquiry request message number,Represent
pj×{xj1,xj2,…xjmNode x in }jμProcess the time of an inquiry request message defined,Represent pj×
{xj1,xj2,…xjmNode x in }jμProcess the time that an inquiry request message is actually required;Function I [x] is at x > 0 time value
Being 1, during x≤0, value is 0, and the span of α is [0.25,0.3], and the span of β is [0.45,0.5].
The present embodiment arranges data resource and collects module 1, mission planning module 2, credible combined evaluation module 3 and medical diagnosis on disease mould
Type generation module 4, it is achieved that the structure of disease self diagnosis service system;Modeling submodule 11, resource that setting is sequentially connected with are multiple
System module 12 and resource lookup submodule 13, use non-structured peer-to-peer network as data resource node under cloud environment
Topological organization structure, and service encapsulation of data resource, facilitate user and use data resource by coupling service description information,
Further increase data asset information coverage rate in a network, improve the efficiency of medical record data resource lookup;For efficient real
The disease self diagnosis service of existing low cost, is provided with credible combined evaluation module 3, improves the cloud service supporting big data, services
The credibility of assembled scheme, it is achieved maximum benefitization ground uses the storage in high in the clouds and calculates resource, and uses assessment to optimize submodule
32, save the evaluation time, improve estimating velocity;The present embodiment value α=0.27, β=0.47, medical record data resource is looked into
Efficiency is looked for improve 3.2%.
Embodiment 4
See Fig. 1, Fig. 2, the disease self diagnosis service construction system based on cloud computing of the present embodiment, including:
(1) data resource collect module 1, for according to disease self diagnosis service demand, collection be distributed in cloud each hospital,
In clinic and the application of each medical software, the electronic health record data of patient, form the big data resource of electronic health record;
(2) mission planning module 2, for the processing procedure of data resource big to electronic health record be divided into data storage subtask,
Index calculates subtask and Data Management Analysis calculates subtask, and meets the cloud service money of its demand for each subtask coupling
Pond, source, forms cloud service assembled scheme, to obtain storage resource required in big data handling procedure or to calculate resource;
(3) credible combined evaluation module 3: the mission planning of the big data, services for generating according to mission planning module 2, holds
The assessment of Services Composition scheme of racking, selects optimum cloud service assembled scheme, provides storage for disease self diagnosis service and calculates
Resource, it includes assessing submodule 31 and assessment optimizes submodule 32;
The operation that described assessment submodule 31 specifically performs is:
A, according to cloud service resource pool SPvWith corresponding service qualityHistorical record, carries out the effectiveness of cloud service assembled scheme
Each parameter of utility function in the modeling of function X initialization model, if the mission planning obtained by mission planning module 2
G={G1,G2,G3, correspondingIt is constrained to C={C1,C2,C3, each subtask GvCorresponding cloud service resource pool SPvAltogether
There is mvIndividual service, for cloud service resource pool SPvIn each service SPvω, it comprisesHistorical record number is Lvω,
By SPvγ the feasible cloud service assembled scheme formed is CSγ, v ∈ [1,3], ω ∈ [1, mv], Definition Model is:
Wherein,For kth dimensionMaximum,For kth dimensionMinima, SPvωRh is
It is under the jurisdiction of SPvωOneHistorical record, xvω-hRepresent the parameter of utility function in model;
B, each feasible cloud service assembled scheme is ranked up by order from small to large according to utility function value, before selecting Z can
Services Composition scheme of racking is set according to application example as preferred cloud service assembled scheme, the value of Z;
C, each group of preferred cloud service assembled scheme is calculated the meansigma methods of its utility function value;
D, the meansigma methods of selection utility function value are that maximum preferred cloud service assembled scheme is as optimum cloud service assembled scheme;
Described assessment optimizes submodule 32 and is able to record that utility function value and the optimum combination cloud clothes of preferred cloud service assembled scheme
Business
Scheme, and learn as sample, if new preferred cloud service assembled scheme had occurred, then directly invoke it
Functional value;
(4) diagnosing model generation module 4, for according to optimum cloud service assembled scheme, sets up electronic health record index,
And
Use big data analysing method to calculate and obtain disease self diagnosis model diagnosing model.
Wherein, described electronic health record index includes that case history inverted index, case history filter index and case history details index, described case history
Inverted index is used for retrieving the case history identical with user's disease symptoms from the big data resource of electronic health record according to user's disease symptoms,
Described case history filters index and filters the case history inconsistent with user's Sex, Age and age, institute for the sex according to user and age
State case history details to index for the detailed content retrieving case history from the big data resource of electronic health record.
Wherein, described data resource collects modeling submodule 11, resources duplication submodule 12 and that module 1 includes being sequentially connected with
Resource lookup submodule 13, described modeling submodule 11 is for using Unstructured Peer-to-Peer Network to the resource node under cloud environment
The overlay network formed is modeled, and described resources duplication submodule 12 is between each neighbor node in described overlay network
Carrying out the duplication of resource information, described resource lookup submodule 13 meets the electronic health record data of application demand for lookup coupling
Resource;
If xiFor a peer node in Unstructured Peer-to-Peer Network, { xi1,xi2,…ximIt is xiNeighbor node collection,For this
Ground resource pool,For neighbor node resource information pond, i ∈ [1, n], n are the sum that peer-to-peer network comprises node, and m represents that neighbours save
The number of point, m < n;
A, described resources duplication submodule 12 use when carrying out the duplication of resource information to be believed based on the data resource between neighbor node
Breath Active Replication agreement:
Work as xiWhen adding overlay network, by xiWith { xl1,xl2,…xlmSet up connection, xiBasis furtherIn information on services,
Create the duplication message of a resource information, and described duplication message is transmitted to all neighbor node xlmReplicate, if reciprocity
Any node in network receives one when replicating message, judges whether to receive described multiple according to the number information replicating message
Message processed, if receiving, abandons described duplication message, if receiving first, then according to resource information and the node replicating message
Positional information, updatesIn content, and according to replicate message vital values, determine forward or abandon described duplication message, its
In, resource information needs periodically to synchronize between neighbor node;
The operation that B, described resource lookup submodule 13 specifically perform is:
If initiating inquiry request MjNode be xj, at xjNeighbor node set according to Probability pjRandom choose go out to constant pitch
Point set is pj×{xj1,xj2,…xjm},j∈[1,n];
When peer node xiReceive xjInquiry request M sentjTime, checkWithIn whether contain and meet inquiry request MjElectricity
Sub-medical record data information, if so, according to described electronic health record data message and the position of electronic health record data message place peer node
Confidence ceases, and creates the response message of inquiryAnd according to xjPositional information, by described response messageReturn to xj, so
After by xjVital values subtract 1, if xjVital values be 0, abandon inquiry request MjIf not, 0, use Q learning algorithm to calculate
pj×{xj1,xj2,…xjmThe Q-value of each peer node in }, by inquiry request MjIt is transmitted to pj×{xj1,xj2,…xjmIn }, Q-value is maximum
Node, Probability pjSpan when network is leisurely and carefree be (5,8], the span when network congestion be [0,3);
Set the computing formula of Q-value as:
Wherein, QnewRepresent the new value of Q, QoldRepresent the old value of Q, QlearnRepresenting the value learnt, α represents learning rate,
β represents congested factor,Represent moment t node xjμBuffer queue in pending inquiry request message number,Represent
pj×{xj1,xj2,…xjmNode x in }jμProcess the time of an inquiry request message defined,Represent pj×
{xj1,xj2,…xjmNode x in }jμProcess the time that an inquiry request message is actually required;Function I [x] is at x > 0 time value
Being 1, during x≤0, value is 0, and the span of α is [0.25,0.3], and the span of β is [0.45,0.5].
The present embodiment arranges data resource and collects module 1, mission planning module 2, credible combined evaluation module 3 and medical diagnosis on disease mould
Type generation module 4, it is achieved that the structure of disease self diagnosis service system;Modeling submodule 11, resource that setting is sequentially connected with are multiple
System module 12 and resource lookup submodule 13, use non-structured peer-to-peer network as data resource node under cloud environment
Topological organization structure, and service encapsulation of data resource, facilitate user and use data resource by coupling service description information,
Further increase data asset information coverage rate in a network, improve the efficiency of medical record data resource lookup;For efficient real
The disease self diagnosis service of existing low cost, is provided with credible combined evaluation module 3, improves the cloud service supporting big data, services
The credibility of assembled scheme, it is achieved maximum benefitization ground uses the storage in high in the clouds and calculates resource, and uses assessment to optimize submodule
32, save the evaluation time, improve estimating velocity;The present embodiment value α=0.28, β=0.49, medical record data resource is looked into
Efficiency is looked for improve 3.6%.
Embodiment 5
See Fig. 1, Fig. 2, the disease self diagnosis service construction system based on cloud computing of the present embodiment, including:
(1) data resource collect module 1, for according to disease self diagnosis service demand, collection be distributed in cloud each hospital,
In clinic and the application of each medical software, the electronic health record data of patient, form the big data resource of electronic health record;
(2) mission planning module 2, for the processing procedure of data resource big to electronic health record be divided into data storage subtask,
Index calculates subtask and Data Management Analysis calculates subtask, and meets the cloud service money of its demand for each subtask coupling
Pond, source, forms cloud service assembled scheme, to obtain storage resource required in big data handling procedure or to calculate resource;
(3) credible combined evaluation module 3: the mission planning of the big data, services for generating according to mission planning module 2, holds
The assessment of Services Composition scheme of racking, selects optimum cloud service assembled scheme, provides storage for disease self diagnosis service and calculates
Resource, it includes assessing submodule 31 and assessment optimizes submodule 32;
The operation that described assessment submodule 31 specifically performs is:
A, according to cloud service resource pool SPvWith corresponding service qualityHistorical record, carries out the effectiveness of cloud service assembled scheme
Each parameter of utility function in the modeling of function X initialization model, if the mission planning obtained by mission planning module 2
G={G1,G2,G3, correspondingIt is constrained to C={C1,C2,C3, each subtask GvCorresponding cloud service resource pool SPvAltogether
There is mvIndividual service, for cloud service resource pool SPvIn each service SPvω, it comprisesHistorical record number is Lvω,
By SPvγ the feasible cloud service assembled scheme formed is CSγ, v ∈ [1,3], ω ∈ [1, mv], Definition Model is:
Wherein,For kth dimensionMaximum,For kth dimensionMinima, SPvωRh is
It is under the jurisdiction of SPvωOneHistorical record, xvω-hRepresent the parameter of utility function in model;
B, each feasible cloud service assembled scheme is ranked up by order from small to large according to utility function value, before selecting Z can
Services Composition scheme of racking is set according to application example as preferred cloud service assembled scheme, the value of Z;
C, each group of preferred cloud service assembled scheme is calculated the meansigma methods of its utility function value;
D, the meansigma methods of selection utility function value are that maximum preferred cloud service assembled scheme is as optimum cloud service assembled scheme;
Described assessment optimizes submodule 32 and is able to record that utility function value and the optimum combination cloud clothes of preferred cloud service assembled scheme
Business scheme, and learn as sample, if new preferred cloud service assembled scheme had occurred, then directly invoke
Its functional value;
(4) diagnosing model generation module 4, for according to optimum cloud service assembled scheme, sets up electronic health record and indexes also
Use big data analysing method to calculate and obtain disease self diagnosis model diagnosing model.
Wherein, described electronic health record index includes that case history inverted index, case history filter index and case history details index, described case history
Inverted index is used for retrieving the case history identical with user's disease symptoms from the big data resource of electronic health record according to user's disease symptoms,
Described case history filters index and filters the case history inconsistent with user's Sex, Age and age, institute for the sex according to user and age
State case history details to index for the detailed content retrieving case history from the big data resource of electronic health record.
Wherein, described data resource collects modeling submodule 11, resources duplication submodule 12 and that module 1 includes being sequentially connected with
Resource lookup submodule 13, described modeling submodule 11 is for using Unstructured Peer-to-Peer Network to the resource node under cloud environment
The overlay network formed is modeled, and described resources duplication submodule 12 is between each neighbor node in described overlay network
Carrying out the duplication of resource information, described resource lookup submodule 13 meets the electronic health record data of application demand for lookup coupling
Resource;
If xiFor a peer node in Unstructured Peer-to-Peer Network, { xi1,xi2,…ximIt is xiNeighbor node collection,For this
Ground resource pool,For neighbor node resource information pond, i ∈ [1, n], n are the sum that peer-to-peer network comprises node, and m represents that neighbours save
The number of point, m < n;
A, described resources duplication submodule 12 use when carrying out the duplication of resource information to be believed based on the data resource between neighbor node
Breath Active Replication agreement:
Work as xiWhen adding overlay network, by xiWith { xl1,xl2,…xlmSet up connection, xiBasis furtherIn information on services,
Create the duplication message of a resource information, and described duplication message is transmitted to all neighbor node xlmReplicate, if reciprocity
Any node in network receives one when replicating message, judges whether to receive described multiple according to the number information replicating message
Message processed, if receiving, abandons described duplication message, if receiving first, then according to resource information and the node replicating message
Positional information, updatesIn content, and according to replicate message vital values, determine forward or abandon described duplication message, its
In, resource information needs periodically to synchronize between neighbor node;
The operation that B, described resource lookup submodule 13 specifically perform is:
If initiating inquiry request MjNode be xj, at xjNeighbor node set according to Probability pjRandom choose go out to constant pitch
Point set is pj×{xj1,xj2,…xjm},j∈[1,n];
When peer node xiReceive xjInquiry request M sentjTime, checkWithIn whether contain and meet inquiry request MjElectricity
Sub-medical record data information, if so, according to described electronic health record data message and the position of electronic health record data message place peer node
Confidence ceases, and creates the response message of inquiryAnd according to xjPositional information, by described response messageReturn to xj, so
After by xjVital values subtract 1, if xjVital values be 0, abandon inquiry request MjIf not, 0, use Q learning algorithm to calculate
pj×{xj1,xj2,…xjmThe Q-value of each peer node in }, by inquiry request MjIt is transmitted to pj×{xj1,xj2,…xjmIn }, Q-value is maximum
Node, Probability pjSpan when network is leisurely and carefree be (5,8], the span when network congestion be [0,3);
Set the computing formula of Q-value as:
Wherein, QnewRepresent the new value of Q, QoldRepresent the old value of Q, QlearnRepresenting the value learnt, α represents learning rate,
β represents congested factor,Represent moment t node xjμBuffer queue in pending inquiry request message number,Represent
pj×{xj1,xj2,…xjmNode x in }jμProcess the time of an inquiry request message defined,Represent pj×
{xj1,xj2,…xjmNode x in }jμProcess the time that an inquiry request message is actually required;Function I [x] is at x > 0 time value
Being 1, during x≤0, value is 0, and the span of α is [0.25,0.3], and the span of β is [0.45,0.5].
The present embodiment arranges data resource and collects module 1, mission planning module 2, credible combined evaluation module 3 and medical diagnosis on disease mould
Type generation module 4, it is achieved that the structure of disease self diagnosis service system;Modeling submodule 11, resource that setting is sequentially connected with are multiple
System module 12 and resource lookup submodule 13, use non-structured peer-to-peer network as data resource node under cloud environment
Topological organization structure, and service encapsulation of data resource, facilitate user and use data resource by coupling service description information,
Further increase data asset information coverage rate in a network, improve the efficiency of medical record data resource lookup;For efficient real
The disease self diagnosis service of existing low cost, is provided with credible combined evaluation module 3, improves the cloud service supporting big data, services
The credibility of assembled scheme, it is achieved maximum benefitization ground uses the storage in high in the clouds and calculates resource, and uses assessment to optimize submodule
32, save the evaluation time, improve estimating velocity;The present embodiment value α=0.3, β=0.5, medical record data resource lookup
Efficiency improves 4%.
Last it should be noted that, above example is only in order to illustrate technical scheme, rather than to scope
Restriction, although having made to explain to the present invention with reference to preferred embodiment, it will be understood by those within the art that,
Technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (5)
1. disease self diagnosis service construction system based on cloud computing, is characterized in that, including:
(1) data resource collect module, for according to disease self diagnosis service demand, collection be distributed in cloud each hospital,
In clinic and the application of each medical software, the electronic health record data of patient, form the big data resource of electronic health record;
(2) mission planning module, the processing procedure for data resource big to electronic health record is divided into data storage subtask, rope
Draw calculating subtask and Data Management Analysis calculates subtask, and meet the cloud service resource of its demand for each subtask coupling
Pond, forms cloud service assembled scheme, to obtain storage resource required in big data handling procedure or to calculate resource;
(3) credible combined evaluation module, the mission planning of the big data, services for generating according to mission planning module, perform cloud
The assessment of Services Composition scheme, selects optimum cloud service assembled scheme, provides storage for disease self diagnosis service and calculates resource,
(4) diagnosing model generation module, for according to optimum cloud service assembled scheme, sets up electronic health record index, and
Use big data analysing method to calculate and obtain disease self diagnosis model diagnosing model.
Disease self diagnosis service construction system based on cloud computing the most according to claim 1, is characterized in that, described data
Resources gathering module includes modeling submodule, resources duplication submodule and the resource lookup submodule being sequentially connected with, described modeling
The overlay network that resource node under cloud environment is formed by module for using Unstructured Peer-to-Peer Network is modeled, described resource
Replicon module carries out the duplication of resource information, described resource lookup between each neighbor node in described overlay network
Module meets the electronic health record data resource of application demand for lookup coupling.
Disease self diagnosis service construction system based on cloud computing the most according to claim 1, is characterized in that, described electronics
Case history index include case history inverted index, case history filter index and case history details index, described case history inverted index for according to
Family disease symptoms retrieves the case history identical with user's disease symptoms from the big data resource of electronic health record, and described case history filters index and uses
Filtering the case history inconsistent with user's Sex, Age and age in the sex according to user and age, described case history details index is used for
The detailed content of case history is retrieved from the big data resource of electronic health record.
Disease self diagnosis service construction system based on cloud computing the most according to claim 2, is characterized in that, described resource
Replicon module uses when carrying out the duplication of resource information based on the data asset information Active Replication agreement between neighbor node, tool
Body is: set xiFor a peer node in Unstructured Peer-to-Peer Network, { xi1,xi2,…ximIt is xiNeighbor node collection,For
Local resource pond,For neighbor node resource information pond, i ∈ [1, n], n are the sum that peer-to-peer network comprises node, and m represents neighbours
The number of node, m < n, works as xiWhen adding overlay network, by xiWith { xl1,xl2,…xlmSet up connection, xiBasis furtherIn
Information on services, create the duplication message of a resource information, and described duplication message be transmitted to all neighbor node xlmCarry out
Replicating, if any node in peer-to-peer network receives a duplication message, the number information according to replicating message judges whether
Receiving described duplication message, if receiving, abandoning described duplication message, if receiving first, then according to the money replicating message
Source information and node location information, updateIn content, and according to replicating the vital values of message, determine to forward or abandon described
Replicating message, wherein, resource information needs periodically to synchronize between neighbor node;Described lookup also mates satisfied application need
The electronic health record data resource asked, including: set initiation inquiry request MjNode be xj, at xjNeighbor node set according to
Probability pjThe peer node that random choose goes out integrates as pj×{xj1,xj2,…xjm},j∈[1,n];
When peer node xiReceive xjInquiry request M sentjTime, checkWithIn whether contain and meet inquiry request MjElectricity
Sub-medical record data information, if so, according to described electronic health record data message and the position of electronic health record data message place peer node
Confidence ceases, and creates the response message of inquiryAnd according to xjPositional information, by described response messageReturn to xj, so
After by xjVital values subtract 1, if xjVital values be 0, abandon inquiry request MjIf not, 0, use Q learning algorithm to calculate
pj×{xj1,xj2,…xjmThe Q-value of each peer node in }, by inquiry request MjIt is transmitted to pj×{xj1,xj2,…xjmIn }, Q-value is maximum
Node, Probability pjSpan when network is leisurely and carefree be (5,8], the span when network congestion be [0,3);
Set the computing formula of Q-value as:
Wherein, QnewRepresent the new value of Q, QoldRepresent the old value of Q, QlearnRepresenting the value learnt, α represents learning rate,
β represents congested factor,Represent moment t node xjμBuffer queue in pending inquiry request message number,Represent
pj×{xj1,xj2,…xjmNode x in }jμProcess the time of an inquiry request message defined,Represent pj×
{xj1,xj2,…xjmNode x in }jμProcess the time that an inquiry request message is actually required;Function I [x] is at x > 0 time value
Being 1, during x≤0, value is 0, and the span of α is [0.25,0.3], and the span of β is [0.45,0.5].
Disease self diagnosis service construction system based on cloud computing the most according to claim 1, is characterized in that, described credible
Combined evaluation module includes assessing submodule and assessment optimizes submodule;The operation that described assessment submodule specifically performs is:
A, according to cloud service resource pool SPvWith corresponding service qualityHistorical record, carries out the effectiveness of cloud service assembled scheme
Each parameter of utility function in the modeling of function X initialization model, if the mission planning obtained by mission planning module
G={G1,G2,G3, correspondingIt is constrained to C={C1,C2,C3, each subtask GvCorresponding cloud service resource pool SPvAltogether
There is mvIndividual service, for cloud service resource pool SPvIn each service SPvω, it comprisesHistorical record number is Lvω,
By SPvγ the feasible cloud service assembled scheme formed is CSγ, v ∈ [1,3], ω ∈ [1, mv], Definition Model is:
Wherein,For kth dimensionMaximum,For kth dimensionMinima, SPvωRhFor
It is under the jurisdiction of SPvωOneHistorical record, xvω-hRepresent the parameter of utility function in model;
B, each feasible cloud service assembled scheme is ranked up by order from small to large according to utility function value, before selecting Z can
Services Composition scheme of racking is set according to application example as preferred cloud service assembled scheme, the value of Z;
C, each group of preferred cloud service assembled scheme is calculated the meansigma methods of its utility function value;
D, the meansigma methods of selection utility function value are that maximum preferred cloud service assembled scheme is as optimum cloud service assembled scheme;
Described assessment optimizes submodule and is able to record that utility function value and the optimum combination cloud clothes of preferred cloud service assembled scheme
Business scheme, and learn as sample, if new preferred cloud service assembled scheme had occurred, then directly invoke
Its functional value.
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