Journal of Intelligent & Fuzzy Systems - Volume 27, issue 2

Authors: Nguyen, Ngoc Thanh

Article Type: Other

DOI: 10.3233/IFS-131119

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 573-573, 2014

Authors: Bae, Minho | Kihm, Jangsu | Kang, Sanggil | Oh, Sangyoon

Article Type: Research Article

Abstract: Resource description framework (RDF) data management systems (triplestores) that store, index, and process RDF data sets has been a core research interest in semantic web area. Even though the value-based approach with a RDBMS support for constructing triplestores is highly successful in practice, it falls short in storing massive scale RDF data sets and improving query processing performance. In this paper, we propose a novel indexing approach for massive-scale RDF management. Our indexing approach builds collections of vertices, predicates, and graph/relation information with optimized form for both SPARQL query and keyword-based query. Also, we propose a grouping and flagging algorithm …to optimize stored data. Triplestore based on our approach can support highly scalability with a distributed repository and a high-performance query processing. Our experimental results show the proposed indexing approach performs considerably better in query processing time than conventional approaches, and the performance benefits are even greater when the query is complex (more constrains or with FILTER). Show more

Keywords: Resource description framework, indexing, querying, distributed storage, keyword search

DOI: 10.3233/IFS-131039

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 575-587, 2014

Authors: Pham, Xuan Hau | Jung, Jason J.

Article Type: Research Article

Abstract: Since we have been facing multilingual contents, it is difficult for recommender systems (RecSys) to efficiently collect user feedbacks (e.g., ratings). Thus, we expect that multilingual entities matching can improve the performance of recommendation services. Particularly, in movie recommendation services, the movies have several titles in different languages. Thereby, we are focusing on interlinking some possible data sources including traditional tabular data (e.g., IMDB) and Linked Open Data (LOD) (e.g., DBpedia and LinkedMDB). This paper shows meaningful experiences that we have observed during experimentation; i) discovering identical movies which have multilingual titles by interlinking LOD, and ii) improving the performance …of multilingual recommendation. Show more

Keywords: Linked open data, interlinks, string matching, recommendation systems, multilingual entity

DOI: 10.3233/IFS-131044

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 589-599, 2014

Authors: Nguyen, Thanh Binh | Wagner, Fabian

Article Type: Research Article

Abstract: A collective intelligent toolbox has been studied and developed to co-operate multi complex related information systems based on a linked model framework. First the linked model framework is defined in a very formal manner. The mathematic abstract specification provides the basis for handling data exchange among various linked models as well as data from those models integrated into a data warehouse. In this context, an ETL (extracting-transforming-loading) process has been defined. Hereafter, the collective intelligent toolbox is developed based on the multidimensional database stored in the data warehouse. To approve of our concepts, a sectoral linked model framework with its …collective intelligent toolbox will be presented as a practical case study. Several typical examples of the extracted-transformed-linked and published key data are represented. Show more

Keywords: Linked models, data warehouse, EC4MACS (European Consortium for Modelling Air pollution and Climate Strategies), Greenhouse gas - Air Pollution Interactions and Synergies (GAINS), collective intelligent toolbox

DOI: 10.3233/IFS-131084

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 601-609, 2014

Authors: Bogalinski, Pawel | Davies, Daniel | Koszalka, Leszek | Pozniak-Koszalka, Iwona | Kasprzak, Andrzej

Article Type: Research Article

Abstract: Strip nesting problems are well known to be of NP-hard complexity, even in simple cases. A multitude of algorithms now exist that aim at solving such problems efficiently. The experimentation system described here helps users with industrial applications to decide which algorithm suits their requirements best. As an illustration, it is applied to three algorithms, based on: simulated annealing (SA), tabu search (TS), and ant colony optimization (ACO). The system can be treated as an input-output system, in which the parameters of the problem and the algorithms for solving the problem are the inputs, and the introduced measures of algorithms' …quality are the outputs. Experiments are conducted in accordance with a two-stage approach. At the first stage, the tuning process for each algorithm is made. At the second stage, the efficiencies of the optimized algorithms are compared. In the paper, the results of the comparison obtained with the benchmark databases are discussed, and conclusions concerning efficiency of the considered algorithms are drawn accordingly. Show more

Keywords: Strip nesting, tabu search, ant colony optimization, simulated annealing, experimentation system

DOI: 10.3233/IFS-131050

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 611-623, 2014

Authors: Kravari, Kalliopi | Bassiliades, Nick | Papavasileiou, Christos

Article Type: Research Article

Abstract: In order for automated agent-based e-Commerce transactions to blossom, well-defined, analyzable and easily customizable interaction protocols or choreographies of involved parties need to be developed. Although, several domain-depended protocols have already been developed, efficient methodologies and technologies for facilitating the definition, deployment, reuse and maintenance of interaction protocols should be developed. This paper proposes a rule-based, reusable, analyzable and easily comprehensible by the user choreography definition methodology, called K-SWAN. Ôhe proposed choreography scheme separates the definition of the agent shared interaction protocol from the private agent interaction strategy and enables agents to choose the appropriate protocol for the transaction, from …a library of re-usable interaction protocols, and automatically combine it with their personal strategy, from a private library, by using SW technologies for both. Complying with K-SWAN methodology will let agents participate seamlessly in different interaction processes and/or modify their behavior with a minimal programming effort. Finally, this paper presents the integration of the K-SWAN methodology into EMERALD, a multi-agent knowledge-based framework based on SW standards, which maximizes reusability and interoperability of behavior between agents. Show more

Keywords: Semantic Web, intelligent agents, reactive rules, agent interaction choreographies, agent policies

DOI: 10.3233/IFS-131059

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 625-640, 2014

Authors: Beigi, Akram | Mozayani, Nasser

Article Type: Research Article

Abstract: For establishing communications and modeling a framework for dialogue between intelligent agents, it is beneficial to have a well-defined strategy. In a dialogue run, the strategies are the manners to achieve the agents' goals by selecting the best option between the different existent choices. There are not many works which define the strategies for dialogue between agents. In this paper a formal model for dialogue strategy is proposed. The proposed model is a decision making problem of selecting the type of the act and the compatible content to utter at each step of a dialogue. In a given dialogue step, …the model can decide the appropriate act and content allowed by the dialogue protocol in order to satisfy the agents' goals. The strength of the decisions which define the best next move is computed by argumentation theory. The proposed model is illustrated through an example of Dutch auction. Show more

Keywords: Multi-agent communication, dialogue strategy, argumentation

DOI: 10.3233/IFS-131086

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 641-653, 2014

Authors: Cálad-Álvarez, Alejandro | Mejía-Gutiérrez, Ricardo | Sanín, Cesar Maldonado | Szczerbicki, Edward

Article Type: Research Article

Abstract: Engineering design is a knowledge intensive process. Experts' experiences from different product life-cycle stages play a key role in problem solving during design decision making by linking up knowledge to find better solutions for a specific design problem. Different approaches have been used to support Collaborative and Concurrent Product Design, such as Constraint Satisfaction Problem (CSP) modelling. Additionally, due to the need of capitalizing these experiences, the Set of Experience Knowledge Structure (SOEKS) is used to store and manage experiences of decision making process. However it was necessary to adapt the structure to property manage the constraints approach used in …Engineering Design. This article presents a proposed adaptation to SOEKS structure in order to be able to store and reuse CSP design experiences for further re-use and analysis of multiple experiences. Finally, a case study is presented in order to show how the proposed approach can be used in the industrial applications. Show more

Keywords: Set of Experience Knowledge Structure, Concurrent engineering, Knowledge engineering, Knowledge representation, Artificial intelligence, Constraint satisfaction

DOI: 10.3233/IFS-131097

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 655-666, 2014

Authors: Nguyen, Van Du | Nguyen, Ngoc Thanh

Article Type: Research Article

Abstract: It is known that the model indeterminate valid time serves to describe the timestamp and possibility of events that take place in the future. For this kind of events the exact time cannot be determined in a precise way. Instead, one can give a time interval in which an event will probably take place. In addition, in distributed environments, processing inconsistency of knowledge that arisen in the integration process is not only with positive but also negative as well as uncertain knowledge. This is a necessary requirement in the real world because beside a time interval that the event takes …place; we need to know which time interval that the event doesn't take place? In this paper, another aspect of knowledge integration using this data model will be investigated by considering positive, negative, and uncertain conflict profiles. In addition, in the integration process, we need to determine proper time intervals (based on consensus method) which properly represent an event for all kinds of conflict profiles. For this aim, some postulates, algorithm for knowledge integration are worked out and analyzed. Show more

Keywords: Consensus method, indeterminate valid time, conflict profile, knowledge integration

DOI: 10.3233/IFS-131056

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 667-677, 2014

Authors: Ma, Zhen Ming

Article Type: Research Article

Abstract: In this paper, MTL-L-filters of type I and type II in residuated lattices are proposed, some properties and alternative definitions of them are given. In particular, by the MTL-algebras derived from MTL-L-filters of type II, a one-to-one correspondence between the set of L-filters and the set of L-congruences is determined.

Keywords: Residuated lattice, L-filter, MTL-L-filter of type I, MTL-L-filter of type II

DOI: 10.3233/IFS-131026

Citation: Journal of Intelligent & Fuzzy Systems, vol. 27, no. 2, pp. 681-689, 2014