eprintid: 4288
rev_number: 6
eprint_status: archive
userid: 394
dir: disk0/00/00/42/88
datestamp: 2020-12-18 09:07:40
lastmod: 2020-12-18 09:07:40
status_changed: 2020-12-18 09:07:40
type: article
metadata_visibility: show
creators_name: Nguyen, Van Tham
creators_name: Nguyen, Ngoc Thanh
creators_name: Tran, Trong Hieu
creators_id: thamnv.nute@gmail.com
creators_id: ngoc-thanh.nguyen@pwr.wroc.pl
creators_id: hieutt@vnu.edu.vn
title: A model for building probabilistic knowledge-based systems using divergence distances
ispublished: pub
subjects: IT
subjects: isi
divisions: avitech
divisions: fac_fit
abstract: The knowledge-based systems (KBSs) in general and solving the knowledge merging problem in particular have seen a great surge of research activity in recent years. However, there still exist two main shortcomings that need to be addressed in the probabilistic framework. Firstly, the current methods only deal with the problems in which original probabilistic knowledge bases (PKBs) are required to be consistent and formed in the same structure. It is a very strong requirement and difficult to apply in practice. Secondly, only a few measures of distance between probability distributions have been studied to apply in existing models. To overcome these disadvantages, in this paper, we introduce a novel framework for merging PKBs. To this end, a theoretical model is introduced and several experiments are implemented. In theoretical model, some theorems are pointed out and proved to provide mathematical background to construct the merging model. Moreover, a deep survey on how to employ divergence distance functions (DDFs) between probability distributions to carry out the merging process are performed. In experimental aspect, a consistency recovery algorithm and some merging algorithms based on DDFs are proposed. Through the results of conducted experiments, issues about the time cost of merging process, the number of iterations, and CPU Time Elapsed parameter to solve the class of optimization problems in the merging process are analyzed, compared, and evaluated.
date_type: published
publisher: Elsevier
full_text_status: none
publication: Expert Systems with Applications
refereed: TRUE
issn: 0957-4174
related_url_url: https://www.sciencedirect.com/science/article/abs/pii/S0957417420311386
funders: Vietnam National University
projects: QG 19.23
citation:   Nguyen, Van Tham and Nguyen, Ngoc Thanh and Tran, Trong Hieu   A model for building probabilistic knowledge-based systems using divergence distances.  Expert Systems with Applications .    ISSN 0957-4174