نتایج جستجو برای: query formulation

تعداد نتایج: 166605  

Journal: :Intelligent systems with applications 2022

• The introduction of the new task suggesting MeSH terms for systematic review literature search, modelled within context an information specialist looking to add a Boolean query. formulation term suggestion methods, based on pre-trained language models, help specialists and researchers construct effective queries creation. An empirical evaluation effectiveness different methods. understanding ...

Journal: :PVLDB 2011
Arnab Nandi H. V. Jagadish

Many decades of research, coupled with continuous increases in computing power, have enabled highly efficient execution of queries on large databases. In consequence, for many databases, far more time is spent by users formulating queries than by the system evaluating them. It stands to reason that, looking at the overall query experience we provide users, we should pay attention to how we can ...

2015
Karlis Cerans Julija Ovcinnikova Martins Zviedris

We describe a notation and a tool for schema-enabled visual/diagrammatic creation of SPARQL queries over RDF databases. The notation and the tool support both the standard basic query pattern comprising a main query class and possibly linked condition classes and means for aggregate query definition and placing conditions over aggregates including also aggregation of aggregate results. We discu...

2009
Valéria M. B. Cavalcanti Ulrich Schiel Cláudio de Souza Baptista

Visual query systems (VQS) for spatio-temporal databases, which enable formulation of queries involving both spatial and temporal dimensions, are an important research subject. Existing results treat these dimensions separately and there are only a few integrated proposals. This chapter presents a VQS called spatio-temporal visual query environment (S-TVQE), which allows the formulation of conv...

2015
Daniel Blank Sebastian Boosz Andreas Henrich

Usually retrieval systems search for documents relevant to a certain query or—more general—information need. However, in some situations the user is not interested in documents but other types of entities. In the paper at hand, we will propose a system searching for companies with expertise in a given field sketched by a keyword query. The system covers all aspects: determining and representing...

2005
André Schaefer Matthias Jordan Claus-Peter Klas Norbert Fuhr

Daffodil is a front-end to federated, heterogeneous digital libraries targeting at strategic support of users during the information seeking process. This is done by offering a variety of functions for searching, exploring and managing digital library objects. However, the distributed search increases response time and the conceptual model of the underlying search processes is inherently weaker...

Journal: :Int. J. Comput. Proc. Oriental Lang. 2005
In-Su Kang Seung-Hoon Na Jong-Hyeok Lee

Translation ambiguity is a major problem in dictionary-based cross-language information retrieval. To attack the problem, indirect disambiguation approaches, which do not explicitly resolve translation ambiguity, rely on query-structuring techniques such as a structured Boolean model and Pirkola’s method. Direct disambiguation approaches try to assign translation probabilities to translation eq...

Journal: :Inf. Process. Manage. 2005
Fernando López-Ostenero Julio Gonzalo M. Felisa Verdejo

This paper presents a Foreign-Language Search Assistant that uses noun phrases as fundamental units for document translation and query formulation, translation and refinement. The system (a) supports the foreign-language document selection task providing a cross-language indicative summary based on noun phrase translations, and (b) supports query formulation and refinement using the information...

2002
Isabelle Moulinier Hugo Molina-Salgado Peter Jackson

Thomson Legal and Regulatory participated in the CLIR task of the NTCIR-3 workshop. We submitted formal runs for monolingual retrieval in Japanese and Chinese, and for bilingual retrieval from English to Japanese. Our main focus was in Japanese retrieval. We compared word-based and character-based indexing, as well as query formulation using characters and character bigrams. Our results show th...

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