Results 1 - 10 of 660

Reexamining the Cluster Hypothesis: Scatter/Gather on Retrieval Results

by Marti A. Hearst, Jan O. Pedersen , 1996
"... We present Scatter/Gather, a cluster-based document browsing method, as an alternative to ranked titles for the organization and viewing of retrieval results. We systematically evaluate Scatter/Gather in this context and find significant improvements over similarity search ranking alone. This resul ..."
Abstract - Cited by 480 (5 self) - Add to MetaCart
We present Scatter/Gather, a cluster-based document browsing method, as an alternative to ranked titles for the organization and viewing of retrieval results. We systematically evaluate Scatter/Gather in this context and find significant improvements over similarity search ranking alone

Keyword searching and browsing in databases using BANKS

by Gaurav Bhalotia, Arvind Hulgeri, Charuta Nakhe, Soumen Chakrabarti, S. Sudarshan - In ICDE , 2002
"... With the growth of the Web, there has been a rapid increase in the number of users who need to access online databases without having a detailed knowledge of the schema or of query languages; even relatively simple query languages designed for non-experts are too complicated for them. We describe BA ..."
Abstract - Cited by 321 (14 self) - Add to MetaCart
BANKS, a system which enables keyword-based search on relational databases, together with data and schema browsing. BANKS enables users to extract information in a simple manner without any knowledge of the schema or any need for writing complex queries. A user can get information by typing a few

Query Based Multicontext based browsing: a technical report

by Julien Tane , 2004
"... Formal Concept Analysis [3] is an algebraic framework suitable for different knowl-edge processing tasks. It has been widely used in a variety of domains. The current approaches use one lattice ( or a nested line diagram) to organize objects according to their properties. However, it is often diffic ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
is to address the different issues which play an important role for browsing with the query based multicontext. We first give its definition and describe some of its basic properties. Then, to demon-strate its flexibility, we use it in combination with ontologies to create a knowledge base browsing framework

for Knowledge Base Browsing: an Evaluation

by Julien Tane, Phillip Cimiano, Pascal Hitzler
"... Abstract. In [7], we introduced the query-based multicontext theory, which allows to define a virtual space of views on ontological data. Each view is then materialised as a formal context. While this formal context can be visualised in a usual formal concept analysis framework such as Conexp or Tos ..."
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Abstract. In [7], we introduced the query-based multicontext theory, which allows to define a virtual space of views on ontological data. Each view is then materialised as a formal context. While this formal context can be visualised in a usual formal concept analysis framework such as Conexp

Multi-context based browsing in Heterogeneous Semantic Spaces: The Ontology Switching Approach

by Thomas Mandl, Christa Womser-Hacker
"... Homogenization has been the most widely applied approach to create common semantic spaces when it is necessary to overcome the limitations of sharing knowledge posed by semantically heterogeneous concept structures. Ontology ..."
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Homogenization has been the most widely applied approach to create common semantic spaces when it is necessary to overcome the limitations of sharing knowledge posed by semantically heterogeneous concept structures. Ontology

Decomposition of Distributed Nonmonotonic Multi-Context Systems

by Seif El-din Bairakdar, Minh Dao-tran, Thomas Eiter, Michael Fink, Thomas Krennwallner
"... Multi-Context Systems (MCS) are formalisms that enable the interlinkage of single knowledge bases, called contexts, via bridge rules. Recently, the evaluation of heterogeneous, nonmonotonic MCS was considered in Dao-Tran et al. (2010), where a fully distributed algorithm was described. In this paper ..."
Abstract - Cited by 12 (7 self) - Add to MetaCart
Multi-Context Systems (MCS) are formalisms that enable the interlinkage of single knowledge bases, called contexts, via bridge rules. Recently, the evaluation of heterogeneous, nonmonotonic MCS was considered in Dao-Tran et al. (2010), where a fully distributed algorithm was described

Self-determination and persistence in a real-life setting: Toward a motivational model of high school dropout.

by Robert J Vallerand , Michelle S Fbrtier , Frederic Guay - Journal of Personality and Social Psychology, , 1997
"... The purpose of this study was to propose and test a motivational model of high school dropout. The model posits that teachers, parents, and the school administration's behaviors toward students influence students' perceptions of competence and autonomy. The less autonomy supportive the so ..."
Abstract - Cited by 183 (19 self) - Add to MetaCart
can yield benefits on three counts. First, it can provide a real-life test of current theory and research on intrinsic and extrinsic motivation. Second, because the proposed model deals with an unfolding sequence, it may serve to integrate existing knowledge on intrinsic and extrinsic motivation

Approximations for Explanations of Inconsistency in Partially Known Multi-Context Systems ⋆

by Thomas Eiter, Michael Fink, Peter Schüller
"... Abstract. Multi-context systems are a formalism to interlink decentralized and heterogeneous knowledge based systems (contexts), which interact via (possibly nonmonotonic) bridge rules. Inconsistency is a major problem, as it renders such systems useless. In addition, it is likely that complete know ..."
Abstract - Cited by 3 (0 self) - Add to MetaCart
Abstract. Multi-context systems are a formalism to interlink decentralized and heterogeneous knowledge based systems (contexts), which interact via (possibly nonmonotonic) bridge rules. Inconsistency is a major problem, as it renders such systems useless. In addition, it is likely that complete

Modeling Web Sources for Information Integration

by Craig A. Knoblock, Steven Minton, Jose Luis Ambite, Naveen Ashish, Pragnesh Jay Modi, Ion Muslea, Andrew G. Philpot, Sheila Tejada , 1997
"... The Web is based on a browsing paradigm that makes it difficult to retrieve and integrate data from multiple sites. Today, the only way to do this is to build specialized applications, which are time-consuming to develop and difficult to maintain. We are addressing this problem by creating the ..."
Abstract - Cited by 128 (15 self) - Add to MetaCart
The Web is based on a browsing paradigm that makes it difficult to retrieve and integrate data from multiple sites. Today, the only way to do this is to build specialized applications, which are time-consuming to develop and difficult to maintain. We are addressing this problem by creating

Banks: Browsing and keyword searching in relational databases

by B. Aditya, Gaurav Bhalotia, Soumen Chakrabarti, Arvind Hulgeri, Charuta Nakhe, Parag S. Sudarshan - In VLDB , 2002
"... The BANKS system enables keyword-based search on databases, together with data and schema browsing. BANKS enables users to extract information in a simple manner without any knowledge of the schema or any need for writing complex queries. A user can get information by typing a few keywords, followin ..."
Abstract - Cited by 37 (1 self) - Add to MetaCart
The BANKS system enables keyword-based search on databases, together with data and schema browsing. BANKS enables users to extract information in a simple manner without any knowledge of the schema or any need for writing complex queries. A user can get information by typing a few keywords
Results 1 - 10 of 660