Implementation of MADM Methods in Solving Group Decision Support System on Gene Mutations Detection Simulation
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1 Ipleentation of MADM Methods in Solving Group Decision Support Syste on Gene Mutations Detection Siulation Eratita *1, Sri Hartati *2, Retantyo Wardoyo *2, Agus Harjoko *2 *1 Departent of Inforation Syste, Coputer Science Faculty of Sriwijaya University Indonesia (Doctoral Progra Student Coputer Science Gadjah Mada University ) Jl. Palebang-Prabuulih, Ogan Ilir, INDONESIA 1 eratitaz@yahoo.co * 2 Departeent of Coputer Science and Electronics Matheatics and Natural Sciences Faculty Gadjah Mada University, Indonesia Abstract Detection of gene utation is an activity that can provide contribution in the edical field. Detection of utated gene is needed to avoid the diseases caused by the such as cancer. The detection of gene utations can be perfored by utilizing coputer-based syste. Group Decision Support Syste (GDSS) is a coputer-based syste that can be utilized in detecting huan gene utations that cause disease. The ELECTRE ethod, which is a Multi- Attribute Decision Making, is a ethod in odeling ulticriteria GDSS. In this paper we propose ipleentation of odel for ulti-criteria GDSS in which the siulation data is the utated genes that can cause cancer. Keywords: Group Decision Support Syste, ELECTRE, gene utation I. INTRODUCTION A Group Decision Support Syste (GDSS) is a coputer-based systes to support a collection of groups who have a coon task or goal. This syste typically provides an interface for users who are the eber of the group. The GDSS can accelerate decision-aking process or iprove the quality of the resulting decisions, or both. This can be done with the support for the exchange of ideas, opinions, and choices in the group on the syste. The Group Decision Support Syste can be applied to the field of inforation technology which is able to assist in providing decision regarding utated genes that ay or ay not cause cancer. Soe alternative ethods for the deterination of group decision aking have been iproved by researchers. This ethod was developed to deterine the best alternative fro several alternatives based on criterion in aking decisions. One of the ethod in decision aking group is Multiple Criteria Decision Making (MCDM). The MCDM is divided into two odels: Multi-Attribute Decision Making (MADM) and Multi-Objective Decision Making (MODM). The decision to justify whether the genes affected by genes causing cancer can be done by conducting ranking MCDM ELECTRE ethod. For that purpose, we need a odel in decision-aking process to detect the gene utations that can cause cancer. In this paper, we propose ipleentation of GDSS Model by using the ELECTRE ethod to detect gene utations siulation in athlab aplication. This odel is ade by using a siulation of the soe defined criteria. II. BACKGROUND THEORIES 2.1 GROUP DECISION SUPPORT SYSTEM (GDSS) GROUP DECISION SUPPORT SYSTEM (GDSS) is an interactive coputer based syste that facilitates solution of soe unstructured probles by a few (sets) of decision akers who work together as a group. GDSS can be applied to different groups of decision situations (group), which includes a review panel, task force executive eeting / board, reote workers, and so forth. The basic activities that occurred in any group and who require support on a coputer are: 1. Calling inforation, involving the selection of data values fro an existing database or calling siple inforation. 2. Inforation sharing, eaning the viewer displays the data on the screen to be viewed by groups. 3. Use of inforation, including application software technology, procedure, and group proble solving techniques to the data. [8] 2.2 MULTI- CRITERIA DECISION MAKING Multi-criteria decision aking (MCDM) is the decision-aking technique by considering soe alternatives options. The Multiple Attribute Decision Making (MADM), coes to elections, in which atheatical analysis is not needed. This type of MCDM can be used for the election in which there is only a sall nuber of alternative courses. The MADM is used to solve probles in discrete spaces, typically used to solve probles in the assessent and selection of liited nuber of alternatives. The MADM approaches are done through two stages, naely: 1. Perfor aggregation of the decisions that responds to the decisions corresponding to all destinations on each alternative 2. Perfor alternatives ranking based on the aggregation of the decision akers. [3] /11/$26.00 C 2011 IEEE V2-610
2 According[4]: MADM is evaluated against the alternative Ai (i = 1,2,..., ) against a set of attributes or criteria Cj ( j = 1,2,..., n) where each attribute are not utually dependent with each other. Decision atrix of each alternative on each attribute, X is given as: x11 x12 x1 n = x21 x22 x2n X x1 x2 xn Where x ij is an alternative perforance rating in relation to the j-th attribute. Weight value indicates the relative iportance of each attribute, given as, W: W = { w 1, w 2, w 3,, w n } Perforance rating (X) and weight value (W) represent the core values corresponding to the absolute preference of the decision akers. The MADM probles is finalized with an alternative process to get the best ranking obtained based on the overall value of granted preferences (Yeh, 2002) in [4].[4] 2.3 ELECTRE The ELECTRE (Eliination Et Choix Traduisant He realite) is based on the concept of ranking by paired coparisons between alternatives on the appropriate criteria. An alternative is said to doinate the other alternatives if one or ore criteria are et (copared with the criterion of other alternatives) and it is equal to the reaining criteria. Ranking relations are between two alternatives Ak fro the A1 (Roy, 1973) in [4]. The researches on the ELECTRE ethod has been widely applied, for exaple: (Zhang,2004) conducted a study: The ELECTRE ethod based on interval nubers and its application to the selection of leather anufacture alternatives. In this study, it is studied how to ake use of traditional ethods for certain circustances to solve the MADM with interval nubers. The paper proposes an enhanced ELECTRE ethod based on the nuber of intervals. This is perfored by considering the specificity of interval nubers, using the possibility degree for ranking alternatives, founded the discordance doinance atrix and aggregate doinance atrix, then eliinating inferior alternatives. This ethod can be used to MADM, where the values of attributes in the for of interval nubers, and solve the difficulties in ranking a nuber of intervals in the traditional ethod. The selection of leather-aking proble solving with this ethod, and illustrated its application in real life. (Bashiri,2009) in his research on MADM ethods associated with the decision aker's point of view about the Iportance degree of responses. The results given is assued that the response-eans clustering is ore iportant than the standard deviation. Another advantage of this ethod is it considers the standard deviations that contribute to the strength of experiental design, because it only uses one appropriate response regression function, so that this ethod reduces the statistical error. Because this ethod attepts to obtain a value of several responses, then it can be grouped in the desirability function approach. (Soultaohaadi,2008), conducted an applied research Analysis by an outranking ulti-attribute decisionaking technique, called Eliination et choix traduisant He realite ethod. This approach is applied to an illustrative exaple where Analytical hierarchy process ethod applied to calculate the global weights of the attributes of the couple through the coparison atrix. This study shows the proposed AHP-ELECTRE algorith; outranking relations between the alternatives and in this way, nondoinated sets of land-use alternatives other alternatives can be identified. In this approach, the worst alternative for the exaples given can be recognized as well. Results obtained by ELECTRE outranking is better than the TOPSIS ranking. This approach is beneficial especially when the nuber of alternatives ore. This eans that, further research is still needed to facilitate decision aking MADM tool ore appropriate to apply in the field of MLSA. 2.4 ELECTRE METHOD FOR GENE MUTATIONS DETECTION SIMULATION This paper proposes a odeling of MADM with ELECTRE ethod to detect gene utations siulation in huans who suffer cancer. The utations that ight occur is that there is activation of the Rb gene c-yc gene or inactivation of p53 gene. In order to detect whether a person is identified to have cancer cells or not. The data were collected fro the study of gene utations [6] Table.1 Expression of protein p53,rb and c-yc Source (Prayitno,A. 2005) In this siulation, it can be applied to the three alternatives in the set to the identification of cancer cells in the huan gene, naely: A1 = Inactivasi p53 A2 = activation Rb A3 = c-yc activation V2-611
3 Based on the gene expression in reference [6], there are three which reference in aking decisions to detect a person experiencing the gene utated, naely: C1 = p53 protein expression (in%) C2 = Rb expression (in%) C3 = c-yc expression (in%) The suitability rating alternatives on each criterion will be the value of the nubers one to five, naely: 1 = very bad,2 = bad, 3 = enough, 4 = Good,5 = Very good. Level of iportance of each criterion in value by one to five, naely:1 = very low, 2 = Low, 3 = enough, 4 = High,5 = very high Fro the above criteria, a atch rating is ade for each alternative on each criterion. The rating a atch is ade by siulation, that in deterining the gene is utated or not that actually fit all the criteria and rating is obtained fro the opinions of experts. The siulated suitability rating of each criteria is indicated by the following table [10]: Table.2 Suitability of each alternative on each criterion Alternatif Kriteria C1 C2 C3 A A A The calculation is done with the copletion ethod Eliination Et Choix Traduisant He realite (ELECTRE), which is based on the concept of ranking by paired coparisons between alternatives on the appropriate criteria. An alternative is said to doinate the other alternatives if one or ore criteria are et (copared to the criteria of other alternatives) and it is equal to the reaining criteria. The ranking relationship between the two alternatives A k and A 1 are denoted as A k A 1 if alternative-k no-one doinates the alternative to the quantitative, thus better decision akers to take risks A k than A 1 (roy, 1973) in [4]. Decision atrix of the siulation above obtained as follows: Input the crietion on athlab as follows: Fig.1 Input criterion Pairwise coparison of each alternative in each criteria is expressed by values (Xij). This value ust be noralized to a scale coparable to (r ij ). This value is calculated with the forula as below: X ij rij = dengan i = 1,2,..., j = 1,2...n (1.1) 2 X i= 1 ij x 1 = x 3 = Fro the results of calculations using the above forula in ath lab : The result of calculation obtained as the atrix below: 0, , , , , , , , , Furtherore, the V atrix is calculated based on the equation: V ij = w j x x ij V2-612
4 Fro the above calculation results obtained by atrix V: 2, , , , , , , , ,46183 Calculated for the Association of concordance index (C ) that shows the su of weights of criteria, according to the forula; C = { j v kj >v ij } for j = 1,2,...,n (1.5) The results obtained with this calculation is as follows: C 12 : v 11 >v 21 2, > 2, V 12 >v 22 1, > 2,12132 V 13 >v 23 2,46183 > 1,96950 C 12 = {1,3} The sae calculation for each C then obtained value of C as follows: C 12 = {1,3},C 13 = {1,2,3}, C 21 = {1,2}, C 23 = {1,2}, C 31 = {1,3}, C 32 = {1, 3} Calculating the value set for the atrix discordonce discordonce associated with the attribute is the following: d = { j v kj <v ij } untuk j = 1,2,...,n (1.6) d 12 = v 11 <v 21 2, < 2, V 12 <v 22 1, < 2,12132 V 13 <v 23 2,46183 < 1,96950 d 12 = {2 } With a siilar calculation for each eleent of the set obtained value D: d 12 = { 2}, d 13 = {}, d 21 = {3}, d 23 = {3},d 31 = {2},d 32 = {2} c concordance atrix eleents calculated using the forula : C = (1.7) w j j c Concordance atrix : C= d discordance atrix eleent calculated using the ax{ vkj vij} j d forula: d = ax v v Matriks discordance: { kj ij } j v j - 0,8 1 D= 0, ,8 - c k = 1 l = 1 c = ( 1) c = = = 9,16 3(3-1) 6 (1.9) d is calculated using the forula: d = d k = 1 l = 1 ( 1) (2.0) d = 0,8 Concordance atrix calculated based on the doinant [10] 1, jika c c f = 0, jika c < c F = V2-613
5 eleents of the atrix F is deterined as the doinant discordance: 1, jika d d g = 0, jika d < d G = Aggregation of the doinant atrix (E) showing a partial preference order of alternatives, obtained with the forula in athlab: e = f. g 2.2) Fro the above graphic is A 2 doinate A 1, A 2 also doinate A 3. In this siulation, which deterined the criteria in Group Decision Support Syste in siulated fro existing data. To siulate the odel with the ELECTRE ethod is A 2 doinated A 1 and A 2 doinate A 3. This eans that in this siulation of the criteria for deterining the siulation showed that the activation of Rb ore likely to cause cancer. Result of the calculation is atriks above : e = F x G = = Result of the calculation on graphic as follows : Fig.2 Graphic of result the calculation of odel III. CONCLUDING REMARKS AND FURTHER WORKS Group Decision-aking can assist in decisions ade by a group of people. There are soe group decision aking ethods have been developed, and ELECTRE ethod is one of the ethod in group decision aking that can assist in the decision aking process to deterine whether a utated gene can cause cancer or not, based on existing criteria in the gene utation. This paper proposes the criteria in a for siulation ipleentation of odeling using ELECTRE ethod in athlab. The results fro the decisions is based on the deterination of criteria for odeling. The deterination of criteria for deterining whether a utated gene can cause cancer or do not has to refer to experts in their fields. This paper deonstrates the ipleentation of odeling to perfor the calculation so that the decision can be odelled by using these calculations. This ade the odelling flexible in accordance with the criteria established by the experts for decision aking, so that the utated gene for the deterination of a person or not the criteria derived fro expert opinion in the edical field. This odeling can be used for real life criteria, based on criteria established by the experts. REFERENCES [1] Airi, Developing a New ELECTRE Method with Interval Data in Multiple Attribute Decision Making Probles 2008 [2] Bashiri, An Extension of Multi-Response Optiization In MADM view, Journal of applied Sciences 9(9); page , 2009 V2-614
6 [3] R. Fitriadi, Pendekatan Coproise Prograing dengan eperhitungkan Faktor lingkungan (Studi Kasus Industri Otootif PT XX Jawa Tengah), Jurnal Iliah Teknik Industri Vol. 5 No. 2 Des 2006, hal 72 81, 2006 [4] S. Kusuadewi, S. Hartati, A. Harjoko, dan R. Wardoyo, Fuzzy Multi-Attribute Decision Making (FUZZY MADM), Yogyakarta: Penerbit Graha Ilu, 2006 [5] S. Opricovic, G.H. Tzeng, Extended VIKOR ethod in coparison with outranking ethods, European Journal of Operational Research 178 (2007) , 2007 [6] A. Prayitno, et All, The expression of p53, Rb, and c-yc protein in cervical cancer by iunohistocheistry stain, Biodiversitas ISSN: X Volue 6, Noor 3 Juli 2005 Halaan: , 2005 [7] Soltanohaadi, Achieving to soe outranking relationships between post ining land uses through ined land suitability analysis, Int. J. Environ. Sci. Tech., 5 (4), , Autun 2008 ISSN: Irsen, Ceers, IAU, 2008 [8] E. Turban, Dicision Support and Expert Systes: Manageent Support Systes, Fourth Edition, Prentice-Hall,Inc., United State, 2005 [9] Q. Zhang and J. Ma, Deterining Weights of Criteria Based on Multiple Preference Forats, online pada /WorkingPapers/paper/0102.pdf 12 Oktober 2004, 2004 [10] Eratita, et All, MADM Methods in Solving Group Decission support syte on Gene Mutation Detection siulation, Proceedings The second International Conference on DfA 2010, ISBN: , August 2010, UGM, Yogyakarta V2-615
MADM Methods in Solving Group Decision Support System on Gene Mutations Detection Simulation
MADM Methods in Solving Group Decision Support Syste on Gene Mutations Detection Siulation Eratita *1, Sri Hartati *2, Retantyo Wardoyo *2, Agus Harjoko *2 *1 Departent of Inforation Syste, Coputer Science
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