نتایج جستجو برای: boolean retrieval

تعداد نتایج: 106155  

2011
Xiuzhen Wang Weiquan Gu

Activation of how and where arithmetic operations are displayed in the brain has been observed in various number-processing tasks. However, it remains poorly understood whether stabilized memory of Boolean rules are associated with background knowledge. The present study reviewed behavioral and imaging evidence demonstrating that Boolean problem-solving abilities depend on the core systems of n...

Journal: :Inf. Process. Manage. 1998
Lee Anne H. Paris Helen R. Tibbo

-Although Boolean searching has been the standard model for commercial information retrieval systems for the past three decades, natural language input and partial-match weighted retrieval have recently emerged from the laboratories to become a searching option in several well-known online systems. The purpose of this investigation is to compare the performance of one of these partial match opt...

2000
Eugene Wong

A new file structure for attribute based retrieval is proposed in this paper. It allows queries involving arbitrary Boolean functions of the attribute-value pairs to be processed without taking intersections of lists. The structure is highly dependent on the way in which the file is to be used and is uniquely determined by the specification of the allowed queries. Thus, for example, the structu...

Journal: :JASIS 1995
William R. Hersh David H. Hickam

Few studies have compared the interactive use of Boolean and natural language searching systems. We studied the use of three retrieval systems by senior medical students searching on queries generated by actual physicians in a clinical setting. The searchers were randomized to search on two of three different retrieval systems: a Boolean system, a word-based natural language system, and a conce...

2004
Masaharu Yoshioka Makoto Haraguchi

In this paper, we describe our information retrieval (IR) system that is used for the NTCIR-4 Web Task A. First, we introduce our IR system, which is based on the probabilistic IR model. This system is quite similar to the Okapi system, and uses both a word index and a phrase index comprising combinations of two adjacent words. Second, we propose a method for clarifying queries that combines th...

2004
Michel Beigbeder

In the context of information retrieval, we propose here to merge in a single mathematical framework: the Boolean model, the vector space model, and passage retrieval in a single mathematical framework based on signal theory. In this framework, we define the weight wd,t of the term t in the document d not as a number, but as a function.

Journal: :Inf. Process. Manage. 2006
Oscar Cordón Enrique Herrera-Viedma María Luque

The Inductive Query By Example (IQBE) paradigm allows a system to automatically derive queries for a specific Information Retrieval System (IRS). Classic IRSs based on this paradigm [Smith, M., & Smith, M. (1997). The use of genetic programming to build Boolean queries for text retrieval through relevance feedback. Journal of Information Science, 23(6), 423–431] generate a single solution (Bool...

Journal: :JASIST 2016
Erin Colvin Donald H. Kraft

Finding software for reuse is a problem that programmers face. To reuse code that has been proven to work can increase any programmer’s productivity, benefit corporate productivity, and also increase the stability of software programs. This paper shows that fuzzy retrieval has an improved retrieval performance over typical Boolean retrieval. Various methods of fuzzy information retrieval implem...

‎The notion of (Boolean) uni-soft filters‎ ‎in MTL-algebras is introduced‎, ‎and several properties of them are‎ ‎investigated‎. ‎Characterizations of (Boolean) uni-soft filters are discussed‎, ‎and some (necessary and sufficient) conditions‎ ‎for a uni-soft filter to be Boolean are provided‎. ‎The condensational property for a Boolean uni-soft filter is established.

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