CN102521288A - Acquisition method of Web service information on Internet - Google Patents
Acquisition method of Web service information on Internet Download PDFInfo
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- CN102521288A CN102521288A CN2011103866479A CN201110386647A CN102521288A CN 102521288 A CN102521288 A CN 102521288A CN 2011103866479 A CN2011103866479 A CN 2011103866479A CN 201110386647 A CN201110386647 A CN 201110386647A CN 102521288 A CN102521288 A CN 102521288A
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Abstract
The invention discloses an acquisition method for Web service information on the Internet, which includes acquiring Web service characteristic information which Web service corresponds to, acquiring web pages containing the Web service characteristic information according to the Web service characteristic information, acquiring subjective feedback information and performance index which the Web service corresponds to, acquiring Web service description information of the Web service according to the web pages containing the Web service characteristic information and acquiring Web service reputation information the Web service corresponds to and Web service quality QoS information which the Web service corresponds to according to the subjective feedback information and the performance index. Complete Web service information is obtained by respectively searching information relative to Web service description, reputation and QoS relative information and operating and processing searched information, so that users can favorably conduct Web service finding, selecting and the like, and multiplexing level of the Web service can be effectively improved.
Description
Technical field
The present invention relates to Internet technology, relate in particular to a kind of internet Web service information getting method.
Background technology
Web service (Web Services) is a kind of Service-Oriented Architecture Based (Service-Oriented Architecture; SOA) technology; Be software systems; Web agreement through standard provides service, and purpose is the interactive operation of different machines between network enabled, guarantees that the application service of different platform can interoperability.At present by in the Web service technical standard and standard that standardization body or technological manufacturer developed; The technical standard of core and standard are Simple Object Access Protocol (Simple Object Access Protocol; SOAP), WSDL (Web Services Description Language; WSDL), unified describe find and integrated agreement (Universal Description, Discovery and Integration, UDDI).Wherein SOAP is used for the XML message that Web service calls and representes; WSDL is used to describe the calling interface of Web service; UDDI is service describing, discovery and the integration mechanism of core under the Web service framework.
Web service information can be divided from two main dimensions, i.e. descriptor and quality information.Each dimension comprises multiple different yardstick again, and the Web service descriptor comprises the functional description information in the wsdl document and is dispersed in last other descriptors in internet; The Web service quality information comprises that (wherein QoS information comprises a plurality of yardsticks such as availability, response time, reliability again to QoS of customer for Quality of Service, QoS) information and reputation information.
Web service finds to be meant the process of the Web service that the user satisfies the demands through certain approach discovery according to own demand (comprising functional requirement and nonfunction requirement).The traditional Web Service discovery technique comprises the INFORMATION DISCOVERY Web service that utilizes among the WSDL and from UDDI, finds Web service etc.
Wsdl document is the file that is used to describe information such as Web service interface, utilizes the technology of the INFORMATION DISCOVERY Web service among the WSDL, can in wsdl document, use the wsdl:document element that introduction, descriptive information about the Web service interface are provided.A lot of existing Web information on services acquisition methods are through the parsing to wsdl document, direct extraction Web service information from the wsdl:document element, main or even unique acquiring way that wsdl document is obtained as Web service information.But, from WSDL, only can obtain the functional description information of Web service, simultaneously the wsdl:document element in wsdl document be lack this part descriptor in the wsdl document of optional, a large amount of Web service or descriptor more brief.Therefore, can't get access to complete Web service information, not even necessarily can not get access to complete Web service descriptor, can have a strong impact on the application such as discovery, selection, assembling of Web service through utilizing wsdl document.
UDDI is description, discovery and the integration mechanism of Web service under the Web service framework; Vision according to UDDI; Web service provider issues the Web service information of oneself, be registered in the UDDI storehouse, and the user obtains Web service information through retrieval in the UDDI storehouse, finds Web service.But; Reason owing to UDDI mechanism; Original UDDI storehouse has been closed mostly or has seldom been upgraded, even now still in the UDDI storehouse of operation, can also be very limited from the Web service information that wherein obtains; And UDDI no longer has been unique Web service issue approach, and Web service information also can be scattered on the internet.Therefore through utilizing the UDDI storehouse also can't get access to complete Web service information, equally not necessarily can get access to complete Web service quality information, can have a strong impact on the application such as discovery, selection, assembling of Web service.
Existing Web service discovery technology can also be divided into text based Web service discovery and find based on the Web service of semanteme.These two class methods have all been used the syntactic information or the semantic information of the relevant Web service that comprises in wsdl document or the UDDI storehouse.It mainly is the correlation technique of utilizing information retrieval field that the text based Web service is found; Word frequency/anti-document word frequency (term frequency/inverse document frequency for example; TF/IDF), vector space model (Vector Space Model; VSM), retrieve the Web service that satisfies the demands.The Web service discovery technique mainly utilizes the semantic information in wsdl document or the UDDI storehouse to carry out service discovery.Above-mentioned two types of Web service discovery techniques are all found Web service based on the Web service information in wsdl document or the UDDI storehouse; And the Web service information in wsdl document or the UDDI storehouse is very limited; Therefore in view of this sorting technique, existing Web service discovery technology still is to have deficiency.
At last, Web service selects to be meant the process of user according to demand (comprising functional requirement and the nonfunction requirement) Web service that selection satisfies the demands from the Web service of finding of oneself.Web service selects technology can help the user in the Web service set of satisfying functional requirement, utilizes the qualitative restrain screening to satisfy the Web service of nonfunction requirement.Qualitative attribute commonly used comprises: service quality (Quality of Service, QoS) information and reputation information.Owing to receive the restriction of existing Web service information gathering and finishing technique; Web service selects technology to utilize the QoS information of Web service to carry out services selection more; And can't consider qualitative restrain condition such as Web service prestige, therefore, Web service selects technology also to exist deficiency.
In sum; Flourish along with Internet technology; The user has got used to issuing through approach such as blog, wikipedia, forums on the internet Web service information and the use information of oneself; Correspondingly cause the Web service loss of learning in wsdl document and the UDDI storehouse; In this case, existing Web information on services acquisition methods can't obtain comprehensive Web service information, and the disappearance of Web service information has also correspondingly had influence on the good running of existing Web service discovery, Web service selection etc.
Summary of the invention
In order to overcome defective of the prior art, the invention provides a kind of internet Web service information getting method, can improve description, prestige and the service quality QoS information of Web service effectively.
For realizing above-mentioned purpose, the invention provides a kind of acquisition methods of Web service information, comprise and obtain the corresponding Web service characteristic information of Web service, obtain the webpage that comprises said Web service characteristic information according to said Web service characteristic information; And obtain said Web service corresponding subjective feedback information and performance index; According to the said webpage that comprises said Web service characteristic information, obtain the Web service descriptor of said Web service; And, obtain said Web service corresponding Web service reputation information and Web service QoS information respectively according to said subjective feedback information and said performance index.
Can know by above technical scheme; Web service information getting method provided by the present invention; Through collecting respectively and Web service description, information that prestige is relevant with QoS information, and the information of collecting is carried out operational processes, obtain comprehensive Web service information; Thereby help the user to carry out work such as Web service discovery and selection, and can improve the multiplexing level of Web service effectively.
Description of drawings
Fig. 1 is the process flow diagram of embodiment of the invention Web service information getting method.
Embodiment
Fig. 1 is the process flow diagram of embodiment of the invention Web service information getting method.The acquisition methods of the Web service information that the embodiment of the invention provides comprises collects descriptor, the reputation information that scatters Web service on the internet; Set up the service quality QoS monitoring mechanism of the Web service under the internet environment, catch the QoS information of Web service.Concrete steps comprise:
The webpage that step 13, basis comprise the Web service characteristic information obtains the Web service descriptor of Web service;
Wherein, step 11,14, do not have sequential relationship between 16, do not operated the restriction of sequencing.
Concrete; Through obtaining the corresponding Web service characteristic information of Web service; Can correspondingly get access to the webpage that comprises this Web service characteristic information according to the Web service characteristic information; This web page contents is carried out after effective information extracts, from this webpage, can obtain the Web service descriptor of this Web service; In addition, through obtaining the subjective feedback information of user, this subjective feedback information is carried out after the operational processes, can therefrom obtain the Web service reputation information of this Web service Web service; Simultaneously,, get access to this Web service relevant characters through Web service is conducted interviews, these performance index are carried out operational processes after, can therefrom obtain the Web service QoS information of this Web service; After getting access to Web service description, prestige and QoS information respectively, just can access comprehensive Web service information about this Web service.
Web service information getting method provided by the present invention; Through collecting respectively and Web service description, information that prestige is relevant with QoS information; And carry out operational processes to collecting the information of coming; Obtain comprehensive Web service information, thereby help the user to carry out work such as Web service discovery and selection, and can improve the multiplexing level of Web service effectively.
In the above-described embodiments, the method for obtaining the Web service descriptor comprises the steps.
At first; WSDL wsdl document to Web service is resolved; Obtain analysis result; From analysis result, extract the corresponding Web service characteristic information of Web service, wherein the Web service characteristic information comprises the chained address of service name, action name, message name, parameter name, Web service and/or the descriptor of wsdl document.
Secondly, according to the chained address of the wsdl document that comprises in the Web service characteristic information or the chained address of Web service, use the webpage that the backward chaining function of search is collected the chained address of the chained address that comprises wsdl document or Web service; Or according to the content of text of the chained address of the content of text of the chained address of the wsdl document that comprises in the Web service characteristic information or Web service, the applicating text function of search is collected the webpage of content of text of chained address of content of text or the Web service of the chained address that comprises wsdl document.
Wherein, The related web page of Web service generally comprise the reference address of related Web service; Be the chained address (WSDL URL) of wsdl document or the chained address (Endpoint URL) of Web service, with the reference address of Web service as its sign that in webpage, occurs, as the foundation of collecting related web page; This sign possibly occur with the hyperlink mode in webpage, also possibly be the form of plain text.Utilize the search interface of universal search engine Google to collect related web page, construct respectively and submit suitable querying condition to, utilize Google to obtain the page of satisfying the demand to Google to above-mentioned two kinds of situation.
For identifying the webpage that exists with the hyperlink form; Adopt backward chaining (Backlink) function of search to collect related web page; Backward chaining search is meant and utilizes that the linking relationship of webpage obtains the webpage that points to specific objective webpage or entity on the internet; For example have the hyperlink of pointing to webpage b among the webpage a, webpage a is the backward chaining of webpage b so, and the backward chaining function of search interrogate format of Google is link: < target_URL >; Wherein search for determiner " link " expression search and comprise the webpage that points to the specific objective entity; Target entity is specified by < target_URL >, and therefore, the querying condition of constructing to this kind situation is link: < WSDL URL>and link: < Endpoint URL >.
For identifying the webpage that exists with the plain text form; Adopt text search functionality to collect related web page; Content of text through detecting in the webpage is sought the webpage that comprises certain text content; Correspondingly the querying condition of structure is " < WSDL URL>" or " < Endpoint URL>"; Promptly directly the content of text of the chained address of the content of text of the chained address of the wsdl document of Web service or Web service is retrieved as querying condition respectively, the quotation marks of querying condition both sides then are used for the requirement search engine need not cut speech with querying condition as a phrase.
From the result that querying condition returns, choose preceding 20 results and constitute the candidate page collection; If same web page occurs in the result of a plurality of querying conditions; Need carry out the result and go heavily, if be included in the Endpoint page of the Web service that is generated automatically by standard form when issuing Web service among the result, its content content general and the Web service wsdl document repeats; Do not possess reference value, therefore need from the result, remove this type page.
After the collection of accomplishing the Web service descriptor; Need put in order the Web service descriptor; Can be for from wsdl document, obtaining the Web service descriptor directly as descriptor; For the related web page that from above-mentioned steps, obtains, need handle, therefrom put out the Web service descriptor in order.
Then, the webpage that comprises the Web service characteristic information is resolved, it is divided into some text fragments.
For web document is set up corresponding DOM Document Object Model (Document Object Model, DOM) attribute node in tree and the deletion dom tree.Wherein, DOM provides an interface with platform and language independent; The permission program can dynamic access or is revised the interior perhaps structure of document, and text mark language HTML (Hypertext Markup Language) DOM has defined the standard method of visit html document, and a html document is expressed as a tree structure that has html tag, tag attributes content and three kinds of nodes of label Chinese version content; In order to clear up data so that the processing delete property node of subsequent step; In order to write down the position that being identified at of Web service occurs in the webpage, keep hyperlink destination address (Hypertext Reference, HREF) property content of hyperlink label < A >.
Light from the leaf segment of dom tree and successively to extract text fragments, if less than 3, this category node is generally the content of navigation bar to the content of text length of a leaf node (being word quantity), no practical significance is then directly deleted this node.If the pairing label of leaf node is a paragraph tag; Then the content of text with this node is extracted as a text fragments; Otherwise the content of text of this node is remained in its father node, be about to its content and his father's node content and merge, and this node is deleted from dom tree.
When identifying a text fragments; Write down itself and the corresponding distance of Web service characteristic information in webpage; The i.e. word number of content of text at interval, wherein the position of Web service characteristic information is the position that the chained address of chained address or the Web service of wsdl document occurs.If the Web service characteristic information repeatedly occurs in webpage, then be as the criterion with short distance.
Then, text fragments and Web service characteristic information are expressed as the proper vector form.
(Vector Space Model VSM), is expressed as text documents such as text fragments and Web service characteristic information respectively the vector of n dimension to the modeling technique vector space model of application message searching field<w
D, 1, w
D, 2..., w
D, n>, the corresponding vocabulary (indexing term) of each dimension, vocabulary obtains from text document, and wherein n is the number of the different vocabulary that in all text documents, occur, w
D, i(weight of expression i the vocabulary (termi) of 1≤i≤n) in document d, w
D, iUsually use following formula to calculate:
Wherein, tf
D, iBe i the number of times that vocabulary occurs in text document, L
dBe the length of said text document, idf
i=log (N/df
i), N is that the quantity of text fragments adds 1, df
iFor comprising the quantity of the text document of i vocabulary in N the text document.
Therefore corresponding vocabulary of each dimension when setting up vector space model at first need obtain vocabulary from text document.According to capitalization and such as " _ ", the separator of "-" carries out participle to portmanteau word; Extract stem and remove stop words; Because some universal words that often occur in the Web service field (for example service, soap, response, request, set, get etc.), discrimination and little for Web service, and introduce easily and disturb, these vocabulary also are taken as stop words and remove.For example, " GetProductSellingPages " through participle, get stem, obtain " product ", " sell ", " page " three vocabulary after removing stop words.
Then, the proper vector of text fragments and the proper vector of Web service characteristic information are calculated, obtained the degree of correlation of text fragments and Web service characteristic information.
Because the text fragments to Web service is described or discussed can be shared some vocabulary or term with this Web service; And generally can mention other information of some these services; The for example title of service, operation etc., so text similarity is as one of standard of weighing both degrees of correlation.In addition, the distance that in webpage, identifies in webpage Chinese version fragment and Web service means that more closely text fragment and this Web service exist related possibility big more, therefore near the text fragments the sign of consideration extraction Web service simultaneously in webpage.
Vector space model is expressed as vector with each text document, calculates the similarity of two text documents then through the cosine that calculates angle between two vectors.For two text document d
1And d
2, suppose that its corresponding vector representation is respectively V
1=<w
1,1, w
1,2..., w
1, n>And V2=<w
2,1, w
2,2..., w
2, n>, the similarity of two documents is so:
Correspondingly, the similarity of text fragments and Web service characteristic information does
Wherein s representes the Web service characteristic information, and t representes text fragments, and n is the quantity of the different vocabulary that occur in N the text document.
Based on the similarity of text fragments and Web service characteristic information, the relatedness computation method does,
Then, choose the degree of correlation and satisfy the Web service descriptor of the text fragments of Rule of judgment as Web service.
After the degree of correlation that calculates each text fragments and Web service characteristic information respectively; A degree of correlation threshold value and restricted number as a result are set; From high to low each text fragments is judged successively according to the degree of correlation; If the degree of correlation of text fragments is higher than degree of correlation threshold value, then it is added the results list, reach the number of results quantitative limitation until quantity as a result; If the degree of correlation is higher than the text fragments quantity of degree of correlation threshold value and is less than restricted number as a result, then all classify the result as.Analysis and experience through to experimental data judge that similarity is 0.5, and distance is that the degree of correlation under 10000 situation is 0.099999, and numerical limitations is set to 10 as a result.
Concrete; According to the Web service characteristic information in the wsdl document of Web service; Through collecting the descriptor relevant on the internet with this Web service; And, extract the descriptor of the closest wherein related description content as this Web service with this Web service through the content of text of collecting is carried out operational processes.Wherein, Serve as to collect foundation mainly with the chained address of the wsdl document in the Web service characteristic information or the chained address of Web service; Search wsdl document or the chained address of Web service or the content of text of chained address get access to related web page on public search engines; Through the web page contents of collecting is resolved, extract text fragments wherein; In order to compare the correlativity between text fragments and the relative Web service characteristic information; Text fragments and Web service characteristic information are expressed as vector form respectively; Calculate similarity between the two, and then according to similarity and both distance calculation in webpage degree of correlation between the two; The text fragments of the some that at last degree of correlation is met the demands is as the descriptor of this Web service that gets access to from the internet.
Web service information getting method provided by the invention; Through the descriptor of scattering Web service is on the internet collected and is put in order; In conjunction with the Web service descriptor that possibly exist in the corresponding wsdl document of Web service, make it possible to get access to comparatively perfect Web service descriptor.
In the above-described embodiments, the method for obtaining the Web service reputation information comprises the steps.
At first, collect marking information and the review information of user, obtain the corresponding subjective feedback information of Web service according to marking information and review information to Web service from the website of collecting Web service.
Utilize a large number of users on the internet subjective feedback information of a certain Web service to be caught the reputation information of Web service; From specific website well-known Web service collection site such as Seekda, Service-Finder for example; Mode so that information grasps is collected user's subjective feedback information, comprises user give a mark information and user comment information.
Secondly, calculate each self-corresponding Web service reputation information according to marking information and review information.
User's marking information is some computable numerical value, according to the give a mark method of the corresponding Web service reputation information of information calculations of user does
R wherein
jBe the user of this Web service marking information to this Web service; M is the quantity of whole marking information; Range is the span of marking information; The optional scope that promptly user gives a mark to Web service on this website, for example the last user of Service-Finder make a call to for a Web service 1～5 fen, and so correspondingly Range equals 5.
User comment generally uses natural language to be write as by the user, can't directly calculate, and the method for using the emotion analysis is converted into user comment the numerical value that can calculate; From user comment, extract proper vector < pwnum, nwnum, ppnum; Npnum, acnum >, the number of front speech during wherein the pwnum representative is commented on; The number of negation words in the nwnum representative comment, ppnum represents the number of front phrase, and npnum represents the number of negative phrase; Acnum represents the number (for example, however, but etc.) of adversative; Adopt the method for non-supervised machine learning that the user comment information of collecting is carried out the emotion analysis, the emotion of commenting on is divided into front (representing with 1), negative (representing with-1), neutral (representing with 0).The method of calculating corresponding Web service reputation information according to user comment information does
R wherein
jBe the quantized value of review information, m is the quantity of review information.
Then, Web service reputation information value of averaging that the Web service reputation information that marking information is corresponding is corresponding with review information is calculated, and obtains the Web service reputation information of Web service.
The Web service reputation information that obtains through marking information has identical importance with the Web service reputation information that obtains through review information, and therefore the mode through calculating mean value obtains final Web service reputation information.
Concrete, through collecting on the website, collect marking information and the review information of user, thereby can know the subjective feedback information of user this Web service to Web service from well-known Web service; Because user's marking information is the numerical value that can be used for calculating; Therefore can directly calculate the corresponding Web service reputation information of marking information; And for user's review information; Then use the method for non-supervised machine learning, it is quantified as the numerical value form that can be used in calculating, thereby calculate the corresponding Web service reputation information of review information; At last, marking information and the corresponding respectively Web service reputation information value of averaging of review information are calculated, obtained the Web service reputation information of this Web service.
Web service information getting method provided by the invention; Through collecting the actual feedback content of distribution user on the internet to Web service; And carry out suitable computing; Can obtain comparatively accurately Web service reputation information, and correspondingly improve the problem of Web service reputation information disappearance about Web service.
In the above-described embodiments, the method for obtaining Web service QoS information comprises the steps.
At first, use the monitor node that the control of QoS monitoring module disperses to be arranged on various places, the performance index of Web service are obtained in the periodic access Web service.For example, adopt the mode of distribution type QoS monitoring, utilize QoS monitoring module control monitor node every day Web service once to be visited, obtain the performance index that can collect in the access process, utilize these performance Index Calculation Web services QoS information.
Secondly, performance index comprise that the request of accessing Web services sends time t
c, request response time t
r, unit interval t
sThe interior request number of times req that sends
c, the measurement period t of unit
TotalIn available time t
Up, total request number of times req
TotalAnd successful request number of times req
s, accordingly,, obtain the corresponding Web service QoS information of Web service according to performance index, be specially:
Response time is rt=t
c-t
r, throughput tp=req
c/ t
s, availability av=t
Up/ t
Toal, reliability rb=req
s/ req
Total, response time, throughput, availability, reliability are the indexs of the most often using during QoS calculates.
Concrete, through Web service QoS monitoring module is set, and disperse monitor node is set in various places, utilize periodically accessing Web services of QoS monitoring module control monitor node, collect the performance index in the access process; In conjunction with the computing method in the QoS appraisement system, calculate the Web service QoS information of this Web service.
Web service information getting method provided by the invention; Through adopting the mode of distribution type QoS monitoring; In the actual access process, collect the QoS situation of Web service; Can understand the actual QoS characteristic of Web service more objectively, and can make the user know more QoS information, the correspondingly perfect problem of Web service QoS loss of learning near the Web service in its actual geographic position.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (11)
1. the acquisition methods of an internet Web service information is characterized in that, comprising:
Obtain the corresponding Web service characteristic information of Web service, obtain the webpage that comprises said Web service characteristic information according to said Web service characteristic information; And obtain said Web service corresponding subjective feedback information and performance index;
According to the said webpage that comprises said Web service characteristic information, obtain the Web service descriptor of said Web service; And, obtain said Web service corresponding Web service reputation information and Web service service quality QoS information respectively according to said subjective feedback information and said performance index.
2. the acquisition methods of Web service information according to claim 1 is characterized in that, the said corresponding Web service characteristic information of Web service that obtains obtains the webpage that comprises said Web service characteristic information according to said Web service characteristic information and comprises:
WSDL wsdl document to Web service is resolved, and obtains analysis result;
From said analysis result, extract the corresponding Web service characteristic information of said Web service;
According to the chained address of the said wsdl document that comprises in the said Web service characteristic information or the chained address of said Web service, use the webpage that the backward chaining function of search is collected the chained address of the chained address that comprises said wsdl document or said Web service; Or
According to the content of text of the chained address of the content of text of the chained address of the said wsdl document that comprises in the said Web service characteristic information or said Web service, the applicating text function of search is collected the webpage of content of text of chained address of content of text or the said Web service of the chained address that comprises said wsdl document.
3. the acquisition methods of Web service information according to claim 1 is characterized in that, the said corresponding subjective feedback information of said Web service of obtaining comprises:
Collect marking information and the review information of user from the website of collecting said Web service, obtain the corresponding subjective feedback information of said Web service according to said marking information and review information to said Web service.
4. the acquisition methods of Web service information according to claim 1 is characterized in that, the said corresponding performance index of said Web service of obtaining are specially:
Use the monitor node that the control of QoS monitoring module disperses to be arranged on various places, the performance index of said Web service are obtained in the said Web service of periodic access.
5. the acquisition methods of Web service information according to claim 1 is characterized in that, said according to the said webpage that comprises said Web service characteristic information, the Web service descriptor of obtaining said Web service comprises:
Webpage to comprising said Web service characteristic information is resolved, and it is divided into some text fragments;
Said text fragments and said Web service characteristic information are expressed as the proper vector form;
The proper vector of said text fragments and the proper vector of said Web service characteristic information are calculated, obtained the degree of correlation of said text fragments and said Web service characteristic information;
Choose the said degree of correlation and satisfy the Web service descriptor of the said text fragments of Rule of judgment as said Web service.
6. the acquisition methods of Web service information according to claim 5 is characterized in that, saidly said text fragments and said Web service characteristic information are expressed as the proper vector form are specially: use following formula and calculate,
Wherein, said text fragments and said Web service characteristic information are text document, w
DiBe the weight of i vocabulary in said text document in the said text document, tf
D, iSaid i the number of times that vocabulary occurs in said text document, L
dBe the length of said text document, idf
i=log (N/df
i), wherein, N is that the quantity of said text fragments adds 1, df
iFor comprising the quantity of the said text document of said i vocabulary in said N the said text document.
7. the acquisition methods of Web service information according to claim 6; It is characterized in that; Said the proper vector of said text fragments and the proper vector of said Web service characteristic information are calculated; Obtain said text fragments and said Web service characteristic information degree of correlation relevance (s t) is specially:
wherein s representes said Web service characteristic information; T representes said text fragments;
is the similarity of said text fragments and said Web service characteristic information; Dis (s; T) for said text fragments and the pitch character of said Web service characteristic information in said webpage leave, n is the quantity of the different vocabulary that occur in said N the said text document.
8. the acquisition methods of Web service information according to claim 1 is characterized in that, said according to said subjective feedback information, the Web service reputation information that obtains said Web service comprises:
Calculate each self-corresponding Web service reputation information according to said marking information and review information;
Web service reputation information value of averaging that the Web service reputation information that said marking information is corresponding is corresponding with said review information is calculated, and obtains the said Web service reputation information of said Web service.
9. the acquisition methods of Web service information according to claim 8; It is characterized in that said Web service reputation information
according to said marking information calculations correspondence is specially:
R wherein
jBe said marking information, m is the quantity of said marking information, and Range is the span of said marking information.
10. the acquisition methods of Web service information according to claim 8; It is characterized in that said Web service reputation information
according to said review information calculating correspondence is specially:
R wherein
jBe the quantized value of said review information, m is the quantity of said review information.
11. the acquisition methods of Web service information according to claim 1 is characterized in that, said performance index comprise that the request of visiting said Web service sends time t
c, request response time t
r, unit interval t
sThe interior request number of times req that sends
c, the measurement period t of unit
TotalIn available time t
Up, total request number of times req
TotalAnd successful request number of times req
s, said according to said performance index accordingly, obtain the corresponding Web service QoS information of said Web service, be specially:
Response time is rt=t
c-t
r, throughput is tp=req
c/ t
s, availability is av=t
Up/ t
Total, reliability is rb=req
s/ req
Total
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268070A (en) * | 2014-09-29 | 2015-01-07 | 天津大学 | Semanteme-based Web service automatic calling and QoS information monitoring method |
| CN110222127A (en) * | 2019-06-06 | 2019-09-10 | 中国电子科技集团公司第二十八研究所 | The converging information method, apparatus and equipment of knowledge based map |
| CN114422582A (en) * | 2022-01-20 | 2022-04-29 | 中国科学院软件研究所 | Scientific and technological resource-oriented service dynamic combination method and device |
-
2011
- 2011-11-29 CN CN2011103866479A patent/CN102521288A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268070A (en) * | 2014-09-29 | 2015-01-07 | 天津大学 | Semanteme-based Web service automatic calling and QoS information monitoring method |
| CN104268070B (en) * | 2014-09-29 | 2017-02-15 | 天津大学 | Semanteme-based Web service automatic calling and QoS information monitoring method |
| CN110222127A (en) * | 2019-06-06 | 2019-09-10 | 中国电子科技集团公司第二十八研究所 | The converging information method, apparatus and equipment of knowledge based map |
| CN114422582A (en) * | 2022-01-20 | 2022-04-29 | 中国科学院软件研究所 | Scientific and technological resource-oriented service dynamic combination method and device |
| CN114422582B (en) * | 2022-01-20 | 2023-05-16 | 中国科学院软件研究所 | Dynamic service combination method and device for technological resources |
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