Knowledge and Information Systems
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Shifting multi-hypergraphs via collaborative probabilistic voting
Knowledge and Information Systems - Tập 46 Số 3 - Trang 515-536 - 2016
Tracking the evolution of social emotions with topic models
Knowledge and Information Systems - - 2016
A segment-based approach to clustering multi-topic documents
Knowledge and Information Systems - Tập 34 - Trang 563-595 - 2012
Document clustering has been recognized as a central problem in text data management. Such a problem becomes particularly challenging when document contents are characterized by subtopical discussions that are not necessarily relevant to each other. Existing methods for document clustering have traditionally assumed that a document is an indivisible unit for text representation and similarity comp...... hiện toàn bộ
Recommendations for two-way selections using skyline view queries
Knowledge and Information Systems - Tập 34 - Trang 397-424 - 2012
We study a practical and novel problem of making recommendations between two parties such as applicants and job positions. We model the competent choices of each party using skylines. In order to make recommendations in various scenarios, we propose a series of skyline view queries. To make recommendations, we often need to answer skyline view queries for many entries in one or two parties in batc...... hiện toàn bộ
TeMAS–a multi-agent system for temporally rich domains
Knowledge and Information Systems - Tập 15 Số 1 - Trang 1-30 - 2008
In this paper, we present the model and simulator of a multi-agent system (MAS) for temporally rich domains. The theoretical foundations of the model include a knowledge representation scheme based on an original modification of Petri nets, called Petri nets with time tokens (PNTTs), as well as temporal reasoning based on the extension of Allen's temporal logic. The proposed MAS, called TeMAS, has...... hiện toàn bộ
A multi-colony ant algorithm for optimizing join queries in distributed database systems
Knowledge and Information Systems - Tập 39 - Trang 175-206 - 2013
Distributed database systems provide a new data processing and storage technology for decentralized organizations of today. Query optimization, the process to generate an optimal execution plan for the posed query, is more challenging in such systems due to the huge search space of alternative plans incurred by distribution. As finding an optimal execution plan is computationally intractable, usin...... hiện toàn bộ
Dynamic and fast processing of queries on large-scale RDF data
Knowledge and Information Systems - Tập 41 - Trang 311-334 - 2014
As RDF data continue to gain popularity, we witness the fast growing trend of RDF datasets in both the number of RDF repositories and the size of RDF datasets. Many known RDF datasets contain billions of RDF triples (subject, predicate and object). One of the grant challenges for managing these huge RDF data is how to execute RDF queries efficiently. In this paper, we address the query processing ...... hiện toàn bộ
Mining navigation patterns using a sequence alignment method
Knowledge and Information Systems - Tập 6 Số 2 - Trang 150-163 - 2004
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