187 research outputs found
Strategic weight manipulation in multiple attribute decision making
In some real-world multiple attribute decision making (MADM) problems, a decision maker can strategically set attribute weights to obtain her/his desired ranking of alternatives, which is called the strategic weight manipulation of the MADM. In this paper, we define the concept of the ranking range of an alternative in the MADM, and propose a series of mixed 0-1 linear programming models (MLPMs) to show the process of designing a strategic attribute weight vector. Then, we reveal the conditions to manipulate a strategic attribute weight based on the
ranking range and the proposed MLPMs. Finally, a numerical example with real background is used to demonstrate the validity of our models, and simulation experiments are presented to show the better performance of the ordered weighted averaging operator than the weighted averaging operator in defending against the strategic weight manipulation of the MADM problems
Multiple Attribute Strategic Weight Manipulation With Minimum Cost in a Group Decision Making Context With Interval Attribute Weights Information
Abstract—In multiple attribute decision making (MADM),
strategic weight manipulation is understood as a deliberate
manipulation of attribute weight setting to achieve a desired
ranking of alternatives. In this paper, we study the strategic
weight manipulation in a group decision making (GDM) context
with interval attribute weight information. In GDM, the
revision of the decision makers’ original attribute weight information
implies a cost. Driven by a desire to minimize the cost,
we propose the minimum cost strategic weight manipulation
model, which is achieved via optimization approach, with the
mixed 0-1 linear programming model being proved appropriate
in this context. Meanwhile, some desired properties to manipulate
a strategic attribute weight based on the ranking range
under interval attribute weight information are proposed. Finally,
numerical analysis and simulation experiments are provided with
a twofold aim: 1) to verify the validity of the proposed models
and 2) to show the effects of interval attribute weights information
and the unit cost, respectively, on the cost to manipulate
strategic weights in the MADM in a group decision context.This work was supported in part by National
Science Foundation of China under Grant 71571124, Grant 71871149, and
Grant 71601133; in part by Sichuan University under Grant sksyl201705
and Grant 2018hhs-58; and in part by FEDER Funds under Grant TIN2016-
75850-R
Dynamics of Uncertain Opinion Formation: An Agent-Based Simulation
Abstract: Opinion formation describes the dynamics of opinions in a group of interaction agents and is a powerful tool for predicting the evolution and di usion of the opinions. The existing opinion formation studies assume that the agents express their opinions by using the exact number, i.e., the exact opinions. However, when people express their opinions, sentiments, and support emotions regarding di erent issues, such as politics, products, and events, they o en cannot provide the exact opinions but express uncertain opinions. Furthermore, due to the di erences in culture backgrounds and characters of agents, people who encounter uncertain opinions o en show di erent uncertainty tolerances. The goal of this study is to investigate the dynamics of uncertain opinion formation in the framework of bounded confidence. By taking di erent uncertain opinions and di erent uncertainty tolerances into account, we use an agent-based simulation to investigate the influences of uncertain opinions in opinion formation from two aspects: the ratios of the agents that express uncertain opinions and the widths of the uncertain opinions, and also provide the explanations of the observations obtained
A two-sided logistics matching method considering trading psychology and matching effort under a 4PL
As a supply chain integrator, a fourth party logistics (4PL) typically does not have its own logistics facilities, so the 4PL needs to match third party logistics (3PLs) and customers to meet customers' logistics service demands. An effective matching method can not only improve the efficiency of 4PL supply chain management, but also establish more long-term and stable cooperative relationships with customers and 3PLs. Therefore, we propose a novel two-sided logistics matching method considering the trading psychology and matching effort of matching subjects under the 4PL. First, based on considering the trading psychology, the concepts of blocking pair and stable matching are redefined. Then, based on the public values and matching effort of customers and 3PLs, the evaluation values of customers and 3PLs are calculated. And the trading possibilities of customers and 3PLs are calculated by considering the fairness threshold. Next, we consider different stable matching demands of customers and 3PLs and develop a bi-objective matching model to maximize the trading possibilities of both customers and 3PLs. Furthermore, the properties of the proposed method are discussed. Finally, a numerical example and comparison analysis are provided to prove the feasibility and effectiveness of the proposed method
Asynchronous Opinion Dynamics with Online and Offline Interactions in Bounded Confidence Model
Open Access journalNowadays, in the world, about half of the population can receive information and exchange their opinions with others in online environments (e.g. the Internet), while the other half obtain information and exchange their opinions in offline environments (e.g. face to face) (see eMarketer Report, 2016). The speed at which information is received and opinions are exchanged in online environments is much faster than in offline environments. To model this phenomenon, in this paper we consider online and offline as two subsystems in opinion dynamics, and there is asynchronization when the agents in these two subsystems update their opinions. We show that asynchronization strongly impacts the steady-state time of the opinion dynamics, the opinion clusters and the interactions between the online subsystem and offline subsystem. Furthermore, these effects are often enhanced the larger the size of the online subsystem
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MAGIC-SPP: a database-driven DNA sequence processing package with associated management tools
BACKGROUND: Processing raw DNA sequence data is an especially challenging task for relatively small laboratories and core facilities that produce as many as 5000 or more DNA sequences per week from multiple projects in widely differing species. To meet this challenge, we have developed the flexible, scalable, and automated sequence processing package described here. RESULTS: MAGIC-SPP is a DNA sequence processing package consisting of an Oracle 9i relational database, a Perl pipeline, and user interfaces implemented either as JavaServer Pages (JSP) or as a Java graphical user interface (GUI). The database not only serves as a data repository, but also controls processing of trace files. MAGIC-SPP includes an administrative interface, a laboratory information management system, and interfaces for exploring sequences, monitoring quality control, and troubleshooting problems related to sequencing activities. In the sequence trimming algorithm it employs new features designed to improve performance with respect to concerns such as concatenated linkers, identification of the expected start position of a vector insert, and extending the useful length of trimmed sequences by bridging short regions of low quality when the following high quality segment is sufficiently long to justify doing so. CONCLUSION: MAGIC-SPP has been designed to minimize human error, while simultaneously being robust, versatile, flexible and automated. It offers a unique combination of features that permit administration by a biologist with little or no informatics background. It is well suited to both individual research programs and core facilities
MAGIC Database and Interfaces: An Integrated Package for Gene Discovery and Expression
The rapidly increasing rate at which biological data is being produced requires a
corresponding growth in relational databases and associated tools that can help
laboratories contend with that data. With this need in mind, we describe here
a Modular Approach to a Genomic, Integrated and Comprehensive (MAGIC)
Database. This Oracle 9i database derives from an initial focus in our laboratory
on gene discovery via production and analysis of expressed sequence tags (ESTs),
and subsequently on gene expression as assessed by both EST clustering and
microarrays. The MAGIC Gene Discovery portion of the database focuses on
information derived from DNA sequences and on its biological relevance. In
addition to MAGIC SEQ-LIMS, which is designed to support activities in the
laboratory, it contains several additional subschemas. The latter include MAGIC
Admin for database administration, MAGIC Sequence for sequence processing as
well as sequence and clone attributes, MAGIC Cluster for the results of EST
clustering, MAGIC Polymorphism in support of microsatellite and single-nucleotide-polymorphism
discovery, and MAGIC Annotation for electronic annotation by
BLAST and BLAT. The MAGIC Microarray portion is a MIAME-compliant database
with two components at present. These are MAGIC Array-LIMS, which makes
possible remote entry of all information into the database, and MAGIC Array
Analysis, which provides data mining and visualization. Because all aspects of
interaction with the MAGIC Database are via a web browser, it is ideally suited
not only for individual research laboratories but also for core facilities that serve
clients at any distance
Consistency improvement with a feedback recommendation in personalized linguistic group decision making
The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.Consistency is an important issue in linguistic decision making with various consistency measures and consistency improving methods available in the literature. However, existing linguistic consistency studies omit the fact that words mean different things for different people, that is, decision makers' personalized individual semantics (PISs) over their expressed linguistic preferences are ignored. Therefore, the aim of this article is to propose a novel consistency improving approach based on PISs in linguistic group decision making. The proposed approach combines the characteristics of personalized representation and integrates the PIS-based model in measuring and improving the consistency of linguistic preference relations. A detailed numerical and comparative analysis to support the feasibility of the proposed approach is provided
Consensus Reaching with Time Constraints and Minimum Adjustments in Group with Bounded Confidence Effects
The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.In the bounded confidence model it is widely known that individuals rely on the opinions of their close friends or people with similar interests. Meanwhile, the decision maker always hopes that the opinions of individuals can reach a consensus in a required time. Therefore, with this idea in mind, this paper develops a consensus reaching model with time constraints and minimum adjustments in a group with bounded confidence effects. In the proposed consensus approach, the minimum adjustments rule is used to modify the initial opinions of individuals with bounded confidence, which can further influence the opinion evolutions of individuals to reach a consensus in a required time. The properties of the model are studied, and detailed numerical examples and comparative simulation analysis are provided to justify its feasibility
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