CN108921575A - A kind of Bearing Manufacturing Enterprise green supplier discrimination method not known under incomplete information environment - Google Patents
A kind of Bearing Manufacturing Enterprise green supplier discrimination method not known under incomplete information environment Download PDFInfo
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Abstract
The invention discloses a kind of Bearing Manufacturing Enterprise green supplier discrimination methods not known under incomplete information environment.Initially set up the stratification index system of Bearing Manufacturing Enterprise green supplier identification;Obtain the index value of the potential green supplier of Bearing Manufacturing Enterprise;The index value of potential green supplier is handled using degree of membership;Consider that green supplier recognizes the mutual influence relationship of index at different levels in stratification index system, construct green supplier's identification network analytical framework of Bearing Manufacturing Enterprise, judge of the expert to index importance is indicated using Trapezoid Fuzzy Number, the evaluation result of multidigit expert is integrated using coarse boundary interval, thus the different degree of parameter;Potential green supplier is recognized based on two rank weighted evidence theoretical models, obtains classic green supplier.The present invention is using convenient, it is easy to accomplish, it is provided a method not know the identification of the green supplier under incomplete information environment.
Description
Technical field
The present invention relates to greening supply chain planning field, specially a kind of bearing system not known under incomplete information environment
Make enterprise Green supplier discrimination method.
Background technique
Bearing is a kind of important spare part in contemporary mechanical equipment.Its major function is to support mechanical rotary body, is reduced
Coefficient of friction in its motion process, and guarantee its rotating accuracy.Bearing mnanufacture plays important angle in entire national economy
Color.With the enhancing of global environmental consciousness, Bearing Manufacturing Enterprise is faced with more stringent environmental requirement.Greening supply chain is
Inevitable choice as Bearing Manufacturing Enterprise response environment problem.Greening supply chain planning includes green supplier's identification, green
The links such as product design, green production, green marketing and waste recovery.Green supplier's identification is in the upper of entire supply chain
Trip, the influence to environmental protection and save the cost can be transmitted to each section in downstream by supply chain.
In greening supply chain planning process, various factors becomes the relationship between supplier and Bearing Manufacturing Enterprise
It is complicated and fuzzy.The greening supply chain planning of Bearing Manufacturing Enterprise must be continuously improved, to adapt to environment complicated and changeable.?
Under this background, green supplier's identification plays extremely important in terms of reducing cost, improving product quality and the market competitiveness
Effect.By effective identification to supplier, timely adjustable strategies can promote the green of entire supply chain, develop in a healthy way.
As it can be seen that green supplier's identification plays conclusive effect in greening supply chain planning, entire supply chain directly decide
Competitiveness.The rise of internet is that the green supplier's identification of Bearing Manufacturing Enterprise implementation is provided convenience, but faces numerous confessions
Quotient is answered, Bearing Manufacturing Enterprise still can not quickly select the green supplier for meeting self-demand, how fast and effeciently implement green
Color supplier identification becomes the critical issue in Modern Green supply chain planning.
Urgent problem to be solved mainly includes in current green supplier identification:(1) in the reality of green supplier identification
In work, the information of supplier is not clear enough, often smudgy, or even loses.Deterministic identification model has been unable to meet
The needs of increasingly complicated identification environment.(2) green supplier's identification is a complicated decision problem, and index is mutually closed
Connection.In parameter different degree, the core concept of traditional analytic hierarchy process (AHP) is will to establish isolated, level index system.
Upper layer element is only considered to the dominating role of bottom element, and the element in same layer is considered mutually independent.So
And the relationship between these indexs is often interdependence, also provides feedback effects sometimes.Therefore, traditional step analysis
Method can not handle the mutually influence relationship of the complexity between index, and the different degree of acquisition is unscientific.(3) important in solution index
When spending, used at present is the judgement that expert is described with perfect number to index relative importance, cannot reflect practical thinking
Ambiguity and subjectivity indicate that the judgement of expert is more reasonable with fuzzy number.After introducing fuzzy number and indicating expert judgments, such as
What analysis and processing fuzzy number bring inaccuracy and inconsistency are also the problem for needing to solve.
Summary of the invention
For solve Bearing Manufacturing Enterprise in green supplier identification supplier information is indefinite, index mutually influences and special
The fuzzy problem of family's thinking, the present invention provides a kind of Bearing Manufacturing Enterprise greens not known under incomplete information environment
Supplier's discrimination method.Initially set up the stratification index system of green supplier's identification;Obtain the finger of potential green supplier
Scale value;The index value of potential green supplier is handled using degree of membership;Consider that green supplier recognizes in stratification index system
The mutual influence relationship of indexs at different levels is constructed the network analysis frame of green supplier's identification, is indicated using Trapezoid Fuzzy Number special
Judge of the family to index importance, the evaluation result of multidigit expert is integrated using coarse boundary interval, thus parameter
Different degree;Potential green supplier is recognized based on two rank weighted evidence theoretical models, classic green is obtained and supplies
Answer quotient.
The technical scheme is that:
A kind of Bearing Manufacturing Enterprise green supplier discrimination method not known under incomplete information environment, feature
It is, includes the following steps:
Step 1:Establish the stratification index system of Bearing Manufacturing Enterprise green supplier identification;
Indicate that green supplier recognizes general objective with AO, AO includes four first class index:Product attribute C1, internal competition power
C2, external competitive power C3With collaboration capabilities C4;
C1Including four two-level index:Monovalent C1,1, critical size error C1,2, service C1,3, degree of flexibility C1,4;C1,1、
C1,2Belong to metered dose, C1,3、C1,4Belong to qualitative type;
C2Including three two-level index:Innovation ability C2,1, manufacturing capacity C2,2, adaptability C2,3;C2,1、C2,2、C2,3Belong to
In qualitative type;
C3Including four two-level index:Economic environment C3,1, geographical environment C3,2, social environment C3,3, legal environment C3,4;
C3,1、 C3,2、C3,3、C3,4Belong to qualitative type;
C4Including four two-level index:Technology compatibility C4,1, culture compatibility C4,2, information platform compatibility C4,3, reputation
C4,4;C4,1、C4,2、C4,3、C4,4Belong to qualitative type;
Step 2:Obtain the index value of the potential green supplier of Bearing Manufacturing Enterprise;
For metered dose index C1,1、C1,2, directly acquire the index value of potential green supplier;
For qualitative type index C1,3、C1,4、C2,1、C2,2、C2,3、C3,1、C3,2、C3,3、C3,4、C4,1、C4,2、C4,3、 C4,4, by
After manager investigates the actual conditions of potential green supplier, marking is provided as index value;
If performance of the potential green supplier in certain index is completely specified, index value exact value table
Show;If potential performance of the green supplier in certain index be it is uncertain, which is indicated with section;If
Potential performance of the green supplier in certain index is totally unknown, then the index value be it is incomplete, with null value table
Show;
Step 3:The index value of the potential green supplier of potential Bearing Manufacturing Enterprise is handled using degree of membership;
There is potential green supplier of M family, successively uses x1,x2,...,xMIt indicates;Potential green supplier xrIn index Cj,lOn
Index value vr,(j,l)It indicates, wherein r=1,2 ..., M, j=1,2 ..., N, l=1,2 ..., nj;Standardization index value
v′r,(j,l)Calculation method be:If index Cj,lBelong to income class index, then v 'r,(j,l)=vr,(j,l)/max{v1,(j,l),
v2,(j,l),...,vM,(j,l)};If index Cj,lBelong to cost class index, then v 'r,(j,l)=min { v1,(j,l),v2,(j,l),...,
vM,(j,l)}/vr,(j,l);C1,1、C1,2Belong to cost class index, C1,3、C1,4、C2,1、C2,2、C2,3、C3,1、 C3,2、C3,3、C3,4、
C4,1、C4,2、C4,3、C4,4Belong to income class index;
Score value, which is arranged, is:π1=0.1, π2=0.3, π3=0.5, π4=0.7, π5=0.9, it is corresponding in turn to comment:It is very poor
G1, difference G2, medium G3, good G4, fine G5;G1、G2、G3、G4、G5Corresponding standardization index value successively uses v '(j,l)(G1),
v′(j,l)(G2),v′(j,l)(G3),v′(j,l)(G4),v′(j,l)(G5) indicate, calculation method is:
v′(j,l)(G1)=min { v '1,(j,l),v′2,(j,l),...,v′M,(j,l),
v′(j,l)(G5)=max { v '1,(j,l),v′2,(j,l),...,v′M,(j,l),
Index value belongs to comment GuDegree of membership βuIt indicates, using degree of membership βuTo handle potential green supplier xr's
In index Cj,lOn index value vr,(j,l), the value of utility τ that is obtained after processingr,(j,l)It indicates;If vr,(j,l)Equal to accurate
Value χ1Or it is equal to section [χ1,χ2], if v '(j,l)(Gp)≤χ1≤v′(j,l)(Gp+1) or v '(j,l)(Gp)≤χ1≤χ2≤v′(j,l)
(Gp+1), wherein p=1,2,3,4, then τr,(j,l)=βpπp+βp+1πp+1;If v '(j,l)(Gp)≤χ1≤v′(j,l)(Gp+1) and v '(j,l)
(Gp+1)≤χ2≤v′(j,l)(Gp+2), wherein p=1,2,3, then τr,(j,l)=βpπp+βp+1πp+1+βp+2πp+2;If v '(j,l)(Gp)≤
χ1≤v′(j,l)(Gp+1) and v '(j,l)(Go)≤χ2≤v′(j,l)(Go+1), wherein p=1,2,3,4, o=1,2,3,4, and o > p+1,
Then τr,(j,l)=βpπp+βp+1πp+1+...+βoπo+βo+1πo+1;
Step 4:Consider that Bearing Manufacturing Enterprise green supplier recognizes the mutual influence of index at different levels in stratification index system
Relationship, the network analysis frame of building Bearing Manufacturing Enterprise green supplier identification;
Control layer element is AO;Network layer includes following element group:C1,C2,…,CN, wherein N=4;Element group CiIncluding
ElementWherein i=1,2 ..., N, niIndicate CiThe element number for being included, then n1=4, n2=3, n3=4, n4
=4;Each element group mutually influences, and the element for including in each element group also mutually influences;
Step 5:Judge of the expert to index importance is indicated using Trapezoid Fuzzy Number, is collected using coarse boundary interval
At the evaluation result of multidigit expert, thus the different degree of parameter;
Step 5.1:Using control layer elements A O as criterion, with element group CjElements Cj,lFor secondary criterion, wherein j=1,
2 ..., N, l=1,2 ..., nj, i=1,2 ..., N;
According to element group CiIncluded element is to Cj,lInfluence degree, carry out element group CiThe indirect advantage of included element
Compare;Q experts are shared, the reciprocal jdgement matrix of Trapezoid Fuzzy Number that wherein expert k is provided isHave:
Here, k=1,2 ..., q,It indicates " to be directed to Elements Cj,l, Elements Ci,hCompared to Elements Ci,gIndirect advantage score ",
Wherein g, h=1,2 ..., niAnd g ≠ h;It is a Trapezoid Fuzzy Number, is expressed as WithIt is positive real number and satisfaction
To the reciprocal jdgement matrix of Trapezoid Fuzzy NumberIt carries out consistency check and goes to step 5.2 if qualified;
If unqualified, by k pairs of expertIt is adjusted;The reciprocal jdgement matrix of the Trapezoid Fuzzy Number of other experts is held
The same operation of row, until the reciprocal jdgement matrix of q Trapezoid Fuzzy Number passes through consistency check;
Step 5.2:By Ek,i,(j,l)Dismantling is four matrixes:
Step 5.3:Based on A1,i,(j,l),A2,i,(j,l),...,Aq,i,(j,l), construct group decision matrixIts
InFor aggregate form,ForIts coarse boundary interval isWhereinForGatheringIn coarse lower limit value and coarse upper limit value;
Step 5.4:Set of computationsCoarse boundary intervalArithmetic average form WhereinFor setCoarse lower limit value and thick
Rough upper limit value;
Step 5.5:Construct coarse jdgement matrixBy EAi,(j,l)Dismantling is coarse lower limit value
MatrixWith coarse upper limit value matrix
Step 5.6:For EAi,(j,l),-And EAi,(j,l),+, the feature vector for corresponding to maximum eigenvalue is calculated, respectively:WhereinRespectively
For VAi,(j,l),-、VAi,(j,l),+Value in h dimension, h=1,2 ..., ni;
Step 5.7:Building setWherein
Step 5.8:Similarly, forIt repeats to walk
Rapid 5.3, to step 5.7, are gathered
Step 5.9:Calculate vectorWherein:
Step 5.10:By vectorSwitch toWhereinωi,(j,l)For CiMiddle element is to Cj,lStandardization influence degree vector;
Step 5.11:Step 5.1 is repeated to step 5.10, until calculating
Step 5.12:Construct matrixHave:
Wherein, Ωi,jColumn vector be ωi,(j,l);
Step 5.13:Step 5.1 is repeated to step 5.12, calculates all Ωi,j, wherein j=1,2 ..., N, i=
1,2,...,N;The hypermatrix Ω under control layer elements A O is constructed, is had:
Step 5.14:According to C under control layer elements A O1,C2,...,CNTo CjInfluence degree, carry out C1,C2,...,CN
Indirect advantage compare, using the method as step 5.1 to step 5.11, obtain relative Link Importance matrix Ψ=
(ψi,j)N×N, have:
Wherein column vector ψ,j=[ψ1,j,ψ2,j,...,ψN,j]TFor C1,C2,...,CNTo CjStandardization influence degree to
Amount;
Step 5.15:Calculate the weighted type of hypermatrix ΩHaveWherein i=1,2 ..., N, j=1,
2,...,N;
Step 5.16:It is rightSquaring operations are executed, until converging to stable stateI.e.
Step 5.17:It takesAny one column, as network layer all elements Different degree vector, be expressed as:
Step 5.18:Calculate each element group C in network layer1,C2,...,CNDifferent degree, wherein CjDifferent degree beIt, will under the premise of guaranteeing different degree proportionate relationshipDifferent degreeIt amplifies, makes
It is amplifiedMiddle maximum value is 0.95;It is right respectively using same methodDifferent degree Different degreeDifferent degreeC1,
C2..., CNDifferent degree θ1,θ2,...,θNIt amplifies;
Step 6:The potential green supplier of Bearing Manufacturing Enterprise is distinguished based on two rank weighted evidence theoretical models
Know, obtains classic green supplier;
Step 6.1:Potential green supplier has M, successively usesIt indicates;Define potential green supply quotient setFor identification framework Θ, i.e.,With power set 2ΘIndicate the set of all subsets in Θ, hereIt is independent mutually, 2ΘIn element number be 2M;For anyDefinition meetsWith's
Set function mass:2Θ→ [0,1] is the basic probability assignment function on identification framework Θ;For anyDefinition meets'sFor burnt member;
In index Cj,lOn, calculate burnt memberWeighting basic probability assignment functional valueWherein s=1,
2 ..., M, M+1, hereCalculation be:
Step 6.2:It is successively calculated by step 6.1It will It is inputted as evidence, carries out evidence fusion:
Wherein
Step 6.3:It is calculated using the method for step 6.2First rank evidence
Fusion is completed;
Step 6.4:In index C1On, calculate burnt memberWeighting basic probability assignment functional value
Calculation be:
Step 6.5:It is calculated using the method for step 6.4It will It is inputted as evidence, carries out evidence fusion:
Wherein
Second-order evidence fusion is completed;
Step 6.6:It pressesIt is right from big to smallIt is ranked up, arrange first place is
Classic green supplier.
The beneficial effects of the invention are as follows:
(1) index value that potential green supplier is handled using degree of membership, solves the green supply of Bearing Manufacturing Enterprise
The indefinite problem of supplier information in quotient's identification;
(2) consider that green supplier recognizes the mutual influence relationship of index at different levels in stratification index system, construct bearing system
The green supplier's identification network analytical framework for making enterprise solves the problems, such as that index mutually influences in green supplier's identification;
(3) judge of the expert to index importance is indicated using Trapezoid Fuzzy Number, is integrated using coarse boundary interval
The evaluation result of multidigit expert, thus the different degree of parameter, based on two rank weighted evidence theoretical models come to potential green
Supplier recognizes, and obtains classic green supplier, solves the ambiguity of expert's thinking in green supplier's identification
Problem;
(4) this method is using convenient, it is easy to accomplish.
Detailed description of the invention
Fig. 1 is that a kind of Bearing Manufacturing Enterprise green supplier not known under incomplete information environment provided by the invention distinguishes
The flow chart of knowledge method;
Fig. 2 is that a kind of Bearing Manufacturing Enterprise green supplier not known under incomplete information environment provided by the invention distinguishes
The green supplier of knowledge method recognizes stratification index system schematic diagram;
Fig. 3 is that a kind of Bearing Manufacturing Enterprise green supplier not known under incomplete information environment provided by the invention distinguishes
Green supplier's identification network analytical framework schematic diagram of knowledge method.
Specific embodiment
The description present invention combined with specific embodiments below, so that advantages and features of the invention can be easier to by this field skill
Art personnel understanding, so as to make a clearer definition of the protection scope of the present invention.
Embodiment:
To Mr. Yu's Bearing Manufacturing Enterprise, there are three potential bearing retainer suppliersIt is required that being supplied from this three
Classic green supplier is picked out in quotient.
Implementation steps are as follows:
Step 1:Establish the stratification index system of green supplier's identification;
Indicate that green supplier recognizes general objective with AO, AO includes four first class index:Product attribute C1, internal competition power
C2, external competitive power C3With collaboration capabilities C4;
C1Including four two-level index:Monovalent C1,1, critical size error C1,2, service C1,3, degree of flexibility C1,4;C1,1、
C1,2Belong to metered dose, C1,3、C1,4Belong to qualitative type;
C2Including three two-level index:Innovation ability C2,1, manufacturing capacity C2,2, adaptability C2,3;C2,1、C2,2、C2,3Belong to
In qualitative type;
C3Including four two-level index:Economic environment C3,1, geographical environment C3,2, social environment C3,3, legal environment C3,4;
C3,1、 C3,2、C3,3、C3,4Belong to qualitative type;
C4Including four two-level index:Technology compatibility C4,1, culture compatibility C4,2, information platform compatibility C4,3, reputation
C4,4;C4,1、C4,2、C4,3、C4,4Belong to qualitative type;
Step 2:Obtain the index value of potential green supplier;
For metered dose index C1,1、C1,2, directly acquire the index value of potential green supplier;
For qualitative type index C1,3、C1,4、C2,1、C2,2、C2,3、C3,1、C3,2、C3,3、C3,4、C4,1、C4,2、C4,3、 C4,4, by
After manager investigates the actual conditions of potential green supplier, marking is provided as index value;
If performance of the potential green supplier in certain index is completely specified, index value exact value table
Show;If potential performance of the green supplier in certain index be it is uncertain, which is indicated with section;If
Potential performance of the green supplier in certain index is totally unknown, then the index value be it is incomplete, with null value table
Show;
The index value of the potential green supplier of three got is as shown in the table:
In C1,1On the unit of index value be:Member indicates the unit price of supplied retainer;In C1,2On index value
Unit is:Mm indicates the critical dimension errors value of supplied retainer;Index value in remaining index is manager
Marking;
Step 3:The index value of potential green supplier is handled using degree of membership;
C1,1、C1,2Belong to cost class index, C1,3、C1,4、C2,1、C2,2、C2,3、C3,1、C3,2、C3,3、C3,4、C4,1、C4,2、
C4,3、C4,4Belong to income class index;The standardization index value of three potential green suppliers is as shown in the table:
Score value, which is arranged, is:π1=0.1, π2=0.3, π3=0.5, π4=0.7, π5=0.9, it is corresponding in turn to comment:It is very poor
G1, difference G2, medium G3, good G4, fine G5;With the index value v ' that standardizes1,(1,1)=0.0023, v '2,(1,1)=0.0669,
v′3,(1,1)For=1.0000, calculate: v′(,1)(G1)=0.0023, v '(1,1)(G5)=1.0000, v '(1,1)(G2)=
0.2517, v '(1,1)(G3)=0.5011, v '(1,1)(G4)=0.7506; π1=0.1, π2=0.3, π3=0.5, π4=0.7, π5
=0.9;So for v '2,(1,1)=0.0669, calculating degree of membership is β1=0.7410, β2=0.2590, then τ2,(1,1)
=β1π1+β2π2=0.1518;
The value of utility of three potential green suppliers calculate for:
Step 4:Consider that green supplier recognizes the mutual influence relationship of index at different levels in stratification index system, building green
The network analysis frame of supplier's identification;
Control layer element is AO;Network layer includes following element group:C1,C2,…,CN, wherein N=4;Element group CiIncluding
ElementWherein i=1,2 ..., N, niIndicate CiThe element number for being included, then n1=4, n2=3, n3=4, n4
=4;Each element group mutually influences, and the element for including in each element group also mutually influences;
Step 5:Judge of the expert to index importance is indicated using Trapezoid Fuzzy Number, is collected using coarse boundary interval
At the evaluation result of multidigit expert, thus the different degree of parameter;
Step 5.1:Using control layer elements A O as criterion, with element group C2Elements C2,1For secondary criterion, according to element group C1
Included element is to C2,1Influence degree, carry out element group C1The indirect advantage of included element compares;4 experts are shared,
The reciprocal jdgement matrix of the Trapezoid Fuzzy Number provided is followed successively by:
Respectively to E1,1,(2,1),E2,1,(2,1),E3,1,(2,1)And E4,1,(2,1)Consistency check is carried out, is passed through, step is executed
5.2;
Step 5.2:By Ek,1,(2,1)Dismantling is four matrixes:
WithWherein k=1,2,3,4;WithFor, have:
Step 5.3:Based on A1,1,(2,1),A2,1,(2,1),A3,1,(2,1),A4,1,(2,1), construct group decision matrix
For:
WithFor, it calculates:
Coarse boundary interval be
Coarse boundary interval be
Coarse boundary interval be
Coarse boundary interval be
Step 5.4:Set of computationsCoarse boundary intervalArithmetic average form be
Step 5.5:Construct coarse jdgement matrixFor:
By EA1,(2,1)Dismantling is coarse lower limit value matrixWith coarse upper limit value matrix
Step 5.6:ForWithCalculate the feature for corresponding to maximum eigenvalue
Vector, respectively:VA1,(2,1),-=[0.71,0.44,0.45,0.30]T、VA1,(2,1),+=[0.65,0.49,0.47,
0.34]T;
Step 5.7:Construct set GA1,(2,1)={ 0.68,0.47,0.46,0.32 };
Step 5.8:Similarly, for:
B1,1,(2,1),B2,1,(2,1),B3,1,(2,1),B4,1,(2,1),
C1,1,(2,1),C2,1,(2,1),C3,1,(2,1),C4,1,(2,1),
D1,1,(2,1),D2,1,(2,1),D3,1,(2,1),D4,1,(2,1),
Step 5.3 is repeated to step 5.7, obtains GB1,(2,1)={ 0.73,0.51,0.66,0.58 };GC1,(2,1)=
{0.82,0.67,0.73,0.69};GD1,(2,1)={ 0.95,0.77,0.83,0.75 };
Step 5.9:Calculate outgoing vector ω1,(2,1)=[0.38,0.29,0.31,0.28]T;
Step 5.10:By vector ω1,(2,1)=[0.38,0.29,0.31,0.28]TSwitch to ω1,(2,1)=[0.30,0.23,
0.25,0.22]T;
Step 5.11:Step 5.1 is repeated to step 5.10, is calculated:
ω1,(2,2)=[0.28,0.41,0.17,0.14]T,
ω1,(2,3)=[0.33,0.34,0.13,0.20]T;
Step 5.12:Construct matrixHave:
Step 5.13:Step 5.1 is repeated to step 5.12, calculates all Ωi,j, wherein j=1,2,3,4, i=1,
2,3,4;The hypermatrix Ω under control layer elements A O is constructed, is had:
Step 5.14:According to C under control layer elements A O1,C2,C3,C4To CjInfluence degree, carry out C1,C2,C3,C4Between
The advantage of connecing compares, wherein j=1, and 2,3,4;Using the method as step 5.1 to step 5.11, relative Link Importance square is obtained
Battle array Ψ=(ψi,j)4×4, have:
Step 5.15:Calculate the weighted type of hypermatrix ΩHaveWherein i=1,2,3,4, j=1,2,3,
4;
Step 5.16:It is rightSquaring operations are executed, until converging to stable stateI.e.Here as t=4
Converge to stable state
Step 5.17:It takesAny one column, as network layer all elements C1,1,C1,2,C1,3,C1,4,C2,1,C2,2,
C2,3,C3,1,C3,2,C3,3,C3,4,C4,1,C4,2,C4,3,C4,4Different degree vector:
θ=[0.12,0.11,0.10,0.09,0.06,0.06,0.07,0.05,0.04,0.04,0.04,0 .06,0.05,
0.05,0.06]T;
Step 5.18:Calculate each element group C in network layer1,C2,C3,C4Different degree θ1,θ2,θ3,θ4For:0.42,0.19,
0.17,0.22;
Under the premise of guaranteeing different degree proportionate relationship, by C1,1,C1,2,C1,3,C1,4Different degree θ1,1,θ1,2,θ1,3,θ1,4
It is enlarged into:0.95,0.87, 0.79,0.71;By C2,1,C2,2,C2,3Different degree θ2,1,θ2,2,θ2,3It is enlarged into:0.95,0.87,
0.79,0.71;By C3,1,C3,2,C3,3,C3,4Different degree θ3,1,θ3,2,θ3,3,θ3,4It is enlarged into:0.95,0.87,0.79,
0.71;By C4,1,C4,2,C4,3,C4,4Different degree θ4,1,θ4,2,θ4,3,θ4,4It is enlarged into: 0.95,0.87,0.79,0.71;It will
C1,C2,C3,C4Different degree θ1,θ2,θ3,θ4It is enlarged into:0.95,0.87,0.79,0.71;
Step 6:Potential green supplier is recognized based on two rank weighted evidence theoretical models, is obtained classic
Green supplier;
Step 6.1:Potential green supplier has 3, successively usesIt indicates;Define potential green supply quotient setFor identification framework Θ, i.e.,With power set 2ΘIndicate the set of all subsets in Θ, hereMutually
It is mutually independent, 2ΘIn element number be 23;For anyDefinition meetsWithSet function
mass:2Θ→ [0,1] is the basic probability assignment function on identification framework Θ;For anyDefinition meets
'sFor burnt member;
In index C1,1On, calculate burnt memberWeighting basic probability assignment functional valueFor:
Step 6.2:It is successively calculated by step 6.1It obtains:
It willIt is inputted as evidence, carries out evidence fusion, obtain
It arrives:
Step 6.3:It is calculated using the method for step 6.2It obtains:
First rank evidence fusion is completed;
Step 6.4:In index C1On, calculate burnt memberWeighting basic probability assignment functional valueIt obtains:
Step 6.5:It is calculated using the method for step 6.4It obtains:
It willIt is inputted as evidence, carries out evidence fusion, obtain
It arrives:
Mass (Θ)=0.5792;
Second-order evidence fusion is completed;
Step 6.6:It pressesIt is right from big to smallIt is ranked up, obtainsAs classic green supplier.
Claims (1)
1. a kind of Bearing Manufacturing Enterprise green supplier discrimination method not known under incomplete information environment, which is characterized in that
Include the following steps:
Step 1:Establish the stratification index system of Bearing Manufacturing Enterprise green supplier identification;
Indicate that green supplier recognizes general objective with AO, AO includes four first class index:Product attribute C1, internal competition power C2, outside
Portion competitiveness C3With collaboration capabilities C4;
C1Including four two-level index:Monovalent C1,1, critical size error C1,2, service C1,3, degree of flexibility C1,4;C1,1、C1,2Belong to
Metered dose, C1,3、C1,4Belong to qualitative type;
C2Including three two-level index:Innovation ability C2,1, manufacturing capacity C2,2, adaptability C2,3;C2,1、C2,2、C2,3Belong to qualitative
Type;
C3Including four two-level index:Economic environment C3,1, geographical environment C3,2, social environment C3,3, legal environment C3,4;C3,1、
C3,2、C3,3、C3,4Belong to qualitative type;
C4Including four two-level index:Technology compatibility C4,1, culture compatibility C4,2, information platform compatibility C4,3, reputation C4,4;
C4,1、C4,2、C4,3、C4,4Belong to qualitative type;
Step 2:Obtain the index value of the potential green supplier of Bearing Manufacturing Enterprise;
For metered dose index C1,1、C1,2, directly acquire the index value of potential green supplier;
For qualitative type index C1,3、C1,4、C2,1、C2,2、C2,3、C3,1、C3,2、C3,3、C3,4、C4,1、C4,2、C4,3、C4,4, by managing
After person investigates the actual conditions of potential green supplier, marking is provided as index value;
If potential performance of the green supplier in certain index be it is completely specified, which is indicated with exact value;
If potential performance of the green supplier in certain index be it is uncertain, which is indicated with section;If potential
Performance of the green supplier in certain index is totally unknown, then the index value be it is incomplete, indicated with null value;
Step 3:The index value of the potential green supplier of potential Bearing Manufacturing Enterprise is handled using degree of membership;
There is potential green supplier of M family, successively uses x1,x2,...,xMIt indicates;Potential green supplier xrIn index Cj,lOn finger
Scale value vr,(j,l)It indicates, wherein r=1,2 ..., M, j=1,2 ..., N, l=1,2 ..., nj;Standardization index value
v′r,(j,l)Calculation method be:If index Cj,lBelong to income class index, then v 'r,(j,l)=vr,(j,l)/max{v1,(j,l),
v2,(j,l),...,vM,(j,l)};If index Cj,lBelong to cost class index, then v 'r,(j,l)=min { v1,(j,l),v2,(j,l),...,
vM,(j,l)}/vr,(j,l);C1,1、C1,2Belong to cost class index, C1,3、C1,4、C2,1、C2,2、C2,3、C3,1、C3,2、C3,3、C3,4、C4,1、
C4,2、C4,3、C4,4Belong to income class index;
Score value, which is arranged, is:π1=0.1, π2=0.3, π3=0.5, π4=0.7, π5=0.9, it is corresponding in turn to comment:Very poor G1, it is poor
G2, medium G3, good G4, fine G5;G1、G2、G3、G4、G5Corresponding standardization index value successively uses v '(j,l)(G1),v′(j,l)(G2),
v′(j,l)(G3),v′(j,l)(G4),v′(j,l)(G5) indicate, calculation method is:
v′(j,l)(G1)=min { v '1,(j,l),v′2,(j,l),...,v′M,(j,l),
v′(j,l)(G5)=max { v '1,(j,l),v′2,(j,l),...,v′M,(j,l),
Index value belongs to comment GuDegree of membership βuIt indicates, using degree of membership βuTo handle potential green supplier xrIn index
Cj,lOn index value vr,(j,l), the value of utility τ that is obtained after processingr,(j,l)It indicates;If vr,(j,l)Equal to exact value χ1Or it waits
In section [χ1,χ2], if v '(j,l)(Gp)≤χ1≤v′(j,l)(Gp+1) or v '(j,l)(Gp)≤χ1≤χ2≤v′(j,l)(Gp+1), wherein p
=1,2,3,4, then τr,(j,l)=βpπp+βp+1πp+1;If v '(j,l)(Gp)≤χ1≤v′(j,l)(Gp+1) and v '(j,l)(Gp+1)≤χ2≤
v′(j,l)(Gp+2), wherein p=1,2,3, then τr,(j,l)=βpπp+βp+1πp+1+βp+2πp+2;If v '(j,l)(Gp)≤χ1≤v′(j,l)
(Gp+1) and v '(j,l)(Go)≤χ2≤v′(j,l)(Go+1), wherein p=1,2,3,4, o=1,2,3,4, and o > p+1, then τr,(j,l)
=βpπp+βp+1πp+1+...+βoπo+βo+1πo+1;
Step 4:Consider that Bearing Manufacturing Enterprise green supplier recognizes the mutual influence relationship of index at different levels in stratification index system,
Construct the network analysis frame of Bearing Manufacturing Enterprise green supplier identification;
Control layer element is AO;Network layer includes following element group:C1,C2,…,CN, wherein N=4;Element group CiIncluding elementWherein i=1,2 ..., N, niIndicate CiThe element number for being included, then n1=4, n2=3, n3=4, n4=4;Respectively
Element group mutually influences, and the element for including in each element group also mutually influences;
Step 5:Judge of the expert to index importance is indicated using Trapezoid Fuzzy Number, is integrated using coarse boundary interval more
The evaluation result of position expert, thus the different degree of parameter;
Step 5.1:Using control layer elements A O as criterion, with element group CjElements Cj,lFor secondary criterion, wherein j=1,2 ..., N,
L=1,2 ..., nj, i=1,2 ..., N;
According to element group CiIncluded element is to Cj,lInfluence degree, carry out element group CiThe indirect odds ratio of included element
Compared with;Q experts are shared, the reciprocal jdgement matrix of Trapezoid Fuzzy Number that wherein expert k is provided isHave:
Here, k=1,2 ..., q,It indicates " to be directed to Elements Cj,l, Elements Ci,hCompared to Elements Ci,gIndirect advantage score ",
Wherein g, h=1,2 ..., niAnd g ≠ h;It is a Trapezoid Fuzzy Number, is expressed as WithIt is positive real number and satisfaction
To the reciprocal jdgement matrix of Trapezoid Fuzzy NumberIt carries out consistency check and goes to step 5.2 if qualified;If no
Qualification, by k pairs of expertIt is adjusted;The reciprocal jdgement matrix of the Trapezoid Fuzzy Number of other experts is executed same
Sample operation, until the reciprocal jdgement matrix of q Trapezoid Fuzzy Number passes through consistency check;
Step 5.2:By Ek,i,(j,l)Dismantling is four matrixes:
Step 5.3:Based on A1,i,(j,l),A2,i,(j,l),...,Aq,i,(j,l), construct group decision matrixWhereinFor aggregate form,ForIts coarse boundary interval isWhereinForGatheringIn coarse lower limit value and coarse upper limit value;
Step 5.4:Set of computationsCoarse boundary intervalArithmetic average form WhereinFor setCoarse lower limit value and thick
Rough upper limit value;
Step 5.5:Construct coarse jdgement matrixBy EAi,(j,l)Dismantling is coarse lower limit value matrixWith coarse upper limit value matrix
Step 5.6:For EAi,(j,l),-And EAi,(j,l),+, the feature vector for corresponding to maximum eigenvalue is calculated, respectively:WhereinRespectively
For VAi,(j,l),-、VAi,(j,l),+Value in h dimension, h=1,2 ..., ni;
Step 5.7:Building setWherein
Step 5.8:Similarly, forRepeat step 5.3
To step 5.7, gathered
Step 5.9:Calculate vectorWherein:
Step 5.10:By vectorSwitch toWherein
ωi,(j,l)For CiMiddle element is to Cj,lStandardization influence degree vector;
Step 5.11:Step 5.1 is repeated to step 5.10, until calculating
Step 5.12:Construct matrixHave:
Wherein, Ωi,jColumn vector be ωi,(j,l);
Step 5.13:Step 5.1 is repeated to step 5.12, calculates all Ωi,j, wherein j=1,2 ..., N, i=1,
2,...,N;The hypermatrix Ω under control layer elements A O is constructed, is had:
Step 5.14:According to C under control layer elements A O1,C2,...,CNTo CjInfluence degree, carry out C1,C2,...,CNIt is indirect
Advantage compares, and using the method as step 5.1 to step 5.11, obtains relative Link Importance matrix Ψ=(ψi,j)N×N, have:
Wherein column vector ψ 'j=[ψ1,j,ψ2,j,...,ψN,j]TFor C1,C2,...,CNTo CjStandardization influence degree vector;
Step 5.15:Calculate the weighted type of hypermatrix ΩHaveWherein i=1,2 ..., N, j=1,2 ...,
N;
Step 5.16:It is rightSquaring operations are executed, until converging to stable stateI.e.
Step 5.17:It takesAny one column, as network layer all elements
Different degree vector, be expressed as:
Step 5.18:Calculate each element group C in network layer1,C2,...,CNDifferent degree, wherein CjDifferent degree be
It, will under the premise of guaranteeing different degree proportionate relationshipDifferent degreeIt amplifies, makes amplifiedMiddle maximum value is 0.95;It is right respectively using same methodDifferent degree Different degreeDifferent degreeC1,C2,...,CNDifferent degree
θ1,θ2,...,θNIt amplifies;
Step 6:The potential green supplier of Bearing Manufacturing Enterprise is recognized based on two rank weighted evidence theoretical models, is obtained
Obtain classic green supplier;
Step 6.1:Potential green supplier has M, successively usesIt indicates;Define potential green supply quotient setFor identification framework Θ, i.e.,With power set 2ΘIndicate the set of all subsets in Θ, hereIt is independent mutually, 2ΘIn element number be 2M;For anyDefinition meetsWith's
Set function mass:2Θ→ [0,1] is the basic probability assignment function on identification framework Θ;For anyDefinition meets'sFor burnt member;
In index Cj,lOn, calculate burnt memberWeighting basic probability assignment functional valueWherein s=1,2 ..., M, M+
1, hereCalculation be:
Step 6.2:It is successively calculated by step 6.1It will It is inputted as evidence, carries out evidence fusion:
Wherein
Step 6.3:It is calculated using the method for step 6.2First rank evidence fusion is complete
At;
Step 6.4:In index C1On, calculate burnt memberWeighting basic probability assignment functional valueMeter
Calculation mode is:
Step 6.5:It is calculated using the method for step 6.4It will It is inputted as evidence, carries out evidence fusion:
Wherein
Second-order evidence fusion is completed.
Step 6.6:It pressesIt is right from big to smallIt is ranked up, arranges the as optimal of first place
Elegant green supplier.
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