Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 7 of 7 for “"query reformulation"”.
-
SEARCHING AS THINKING: THE ROLE OF CUES IN QUERY REFORMULATION
… acknowledged in the field of IR, research on query reformulation is typically limited to dealing with the "what" or the "how" of the query reformulation process. Drawing a complete picture of searchers' behavior is thus incomplete without addressing the "why" of query reformulation, including …
-
Intent modeling and automatic query reformulation for search engine systems
… subject: ambiguous search intent, ineffective query formulation and vague relevance criteria. To systematically study these problems, the thesis consists of three parts. In the first part, I study search intent ambiguity in search engine queries and propose a click pattern-based method that …
-
Information Quality Criteria Analysis in Query Reformulation in Dynamic Distributed Environments
… decentralized systems that provide users with querying capabilities over a set of heterogeneous, distributed and autonomous data sources (peers). Data Integration Systems, Peer Data Management Systems (PDMS) and Dataspaces are examples of such systems. They are composed by peers that belong to …
-
User Simulation in Interactive Information Retrieval : methods and frameworks for simulating complex search behavior
… include new methods for representing query reformulation, modeling how information needs change, and measuring the impact of different search environments on simulated user behavior. Specifically, this work introduces contextual Markov models, cognitive state models, and embedding …
-
Supporting Text Retrieval Query Formulation In Software Engineering
… irrelevant results. </p> <p>The quality of a query indicates the relevance of the results returned by TR in response to the query and can give an indication if the results are worth investigating or a reformulation of the query should be sought instead. Knowing the quality of the query could …
-
Improving Web Search for Difficult Queries
… quality for difficult queries by: (1) Effective query reformulation, i.e., improving a search engine in the stage of query formulation. A query is difficult because it does not contain the right keywords or lacks discriminative keywords. A better formulation of query by addressing vocabulary …
-
Content based video retrieval via spatial-temporal information discovery.
… is de ned. The STC discovered from either the query example (denoted by QC) or the data collection (denoted by DC) are assumed to determine speci- city of the visual words in the retrieval model, i:e: selected Words-Of-Interest are found more important for certain topics. Based on this …