نتایج جستجو برای: knowledge based

تعداد نتایج: 3310158  

Journal: :Data Knowl. Eng. 1999
Werner Dubitzky Alex G. Büchner John G. Hughes David A. Bell

Case-based reasoning (CBR) systems define knowledge in terms of a memory or library of past cases and a retrieval mechanism that revolves around retrieving data relevant to a goal query. Additionally, such systems employ an adaptation component that transforms the retrieved data into a solution to the problem expressed by the original query. The combination of goal query and the subsequent solu...

2008
Jean Lieber

This document presents some researches centered on the issue of the design of a case-based reasoning (CBR) system, particularly of the steps of retrieval of a source case similar to the target problem and of adaptation of this case to solve this problem. First, an approach of retrieval based on the hierarchical organization of cases is described. It is composed of three procedures, the strong, ...

Journal: :Decision Support Systems 1997
Frank van Harmelen

The literature on validation and verification of knowledge-based systems contains a catalogue of anomalies for knowledge-based systems, such as redundant, contradictory or deficient knowledge. Detecting such anomalies is a method for verifying knowledge-based systems. Unfortunately, the traditional formulation of the anomalies in the literature is very specific to a rule-based knowledge represe...

2015
Florian Grigoleit Peter Struss

Although many approaches to knowledge-based configuration have been developed, the generation of optimal configurations is still an open issue. This paper describes work that addresses this problem in a general way by exploiting an analogy between configuration and diagnosis. Based on a problem representation consisting of a set of ranked goals and a catalog of components, which can contribute ...

2014
Nigel R. Shadbolt Paul R. Smart

Introduction Knowledge elicitation consists of a set of techniques and methods that attempt to elicit the knowledge of a domain expert1, typically through some form of direct interaction with the expert. Knowledge elicitation is a sub-process of knowledge acquisition (which deals with the acquisition or capture of knowledge from any source), and knowledge acquisition is, in turn, a sub-process ...

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this study examined the effect of prior knowledge and vocabulary teaching on iranian efl learners listening comprehension. the current study has two purposes: one is to investigate the effect of background knowledge on the second language listening comprehension of iranian intermediates and the other is to determine whether second language is facilitated by the introduction of unknown vocabularies in the form of prelistening activities. to conduct the study different instruments such as listening proficiency test and four listening tests such as pre and posttests were used and various statistical processes and techniques including paired-sample t-test, and analysis of variance (anova) were used. the findings of this study supported all three hypotheses tested. differences were found between the means of preteaching vocabulary variable, the background knowledge activation variable, and mean difference between these two strategies variable. subjects scored higher when the unknown words were taught in advance. likewise, subjects scored higher when they were asked some relevant questions about the topic than on those without them. there was, in addition, a significant difference between the means of preteaching vocabulary strategy and background knowledge activation strategy. in fact, preteaching vocabulary had a better effect in enhancing the students’ listening comprehension, in comparison to background knowledge activation strategy.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1390

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this stud...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1390

abstract the variables affecting the nature of reading comprehension can be classified into two general categories: reader’s variables, and text variables (alderson, 2000). despite the wave of research on vocabulary knowledge as reader’s variable, the role of this knowledge in c-test as a text-dependent test and its interaction with lexical cohesion of the test as a text feature has remained a...

Journal: :journal of advances in computer engineering and technology 2015
vahid seydi ghomsheh mohamad teshnehlab mehdi aliyari shoordeli

this study proposes a modified version of cultural algorithms (cas) which benefits from rule-based system for influence function. this rule-based system selects and applies the suitable knowledge source according to the distribution of the solutions. this is important to use appropriate influence function to apply to a specific individual, regarding to its role in the search process. this rule ...

Journal: :acta medica iranica 0
rita rezaee quality improvement in clinical research center, shiraz university of medical sciences, shiraz, iran. neda moadeb shiraz university of medical sciences, shiraz, iran. nasrin shokrpour department of english, shiraz university of medical sciences, shiraz, iran.

team-based learning is designed to provide students with both conceptual and procedural knowledge, aiming to enhance active learning and critical thinking. in the present study, team-based learning and lecture methods in teaching the “hospital organization and management” course among hospital management students were compared. this quasi-experimental study was conducted on 25 undergraduate stu...

Journal: :journal of medical education 0
shervin shokouhi assistant professor, department of infectious diseases & tropical medicine, loghman hakim hospital, shahid

background and purpose: the characteristics of residents of infectious diseases who should practice and teach evidence based medicine (ebm) during their clinical work – and their attitudes toward it – are poorly known. we assessed the knowledge, attitude and practice of infectious diseases residents regarding evidence based medicine and their related educational needs. methods: this cross-secti...

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