-
Bando, L.L.; Scholer, F.; Turpin, A.: Query-biased summary generation assisted by query expansion : temporality (2015)
0.02
0.019679207 = product of:
0.13775444 = sum of:
0.13775444 = weight(_text_:assisted in 1820) [ClassicSimilarity], result of:
0.13775444 = score(doc=1820,freq=4.0), product of:
0.26102042 = queryWeight, product of:
6.7552447 = idf(docFreq=139, maxDocs=44218)
0.03863967 = queryNorm
0.5277535 = fieldWeight in 1820, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
6.7552447 = idf(docFreq=139, maxDocs=44218)
0.0390625 = fieldNorm(doc=1820)
0.14285715 = coord(1/7)
- Abstract
- Query-biased summaries help users to identify which items returned by a search system should be read in full. In this article, we study the generation of query-biased summaries as a sentence ranking approach, and methods to evaluate their effectiveness. Using sentence-level relevance assessments from the TREC Novelty track, we gauge the benefits of query expansion to minimize the vocabulary mismatch problem between informational requests and sentence ranking methods. Our results from an intrinsic evaluation show that query expansion significantly improves the selection of short relevant sentences (5-13 words) between 7% and 11%. However, query expansion does not lead to improvements for sentences of medium (14-20 words) and long (21-29 words) lengths. In a separate crowdsourcing study, we analyze whether a summary composed of sentences ranked using query expansion was preferred over summaries not assisted by query expansion, rather than assessing sentences individually. We found that participants chose summaries aided by query expansion around 60% of the time over summaries using an unexpanded query. We conclude that query expansion techniques can benefit the selection of sentences for the construction of query-biased summaries at the summary level rather than at the sentence ranking level.
-
Shiri, A.A.; Revie, C.; Chowdhury, G.: Thesaurus-assisted search term selection and query expansion : a review of user-centred studies (2002)
0.02
0.016698359 = product of:
0.11688851 = sum of:
0.11688851 = weight(_text_:assisted in 1330) [ClassicSimilarity], result of:
0.11688851 = score(doc=1330,freq=2.0), product of:
0.26102042 = queryWeight, product of:
6.7552447 = idf(docFreq=139, maxDocs=44218)
0.03863967 = queryNorm
0.44781366 = fieldWeight in 1330, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.7552447 = idf(docFreq=139, maxDocs=44218)
0.046875 = fieldNorm(doc=1330)
0.14285715 = coord(1/7)
-
Tudhope, D.; Blocks, D.; Cunliffe, D.; Binding, C.: Query expansion via conceptual distance in thesaurus indexed collections (2006)
0.01
0.0139153 = product of:
0.097407095 = sum of:
0.097407095 = weight(_text_:assisted in 2215) [ClassicSimilarity], result of:
0.097407095 = score(doc=2215,freq=2.0), product of:
0.26102042 = queryWeight, product of:
6.7552447 = idf(docFreq=139, maxDocs=44218)
0.03863967 = queryNorm
0.37317806 = fieldWeight in 2215, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.7552447 = idf(docFreq=139, maxDocs=44218)
0.0390625 = fieldNorm(doc=2215)
0.14285715 = coord(1/7)
- Abstract
- Purpose - The purpose of this paper is to explore query expansion via conceptual distance in thesaurus indexed collections Design/methodology/approach - An extract of the National Museum of Science and Industry's collections database, indexed with the Getty Art and Architecture Thesaurus (AAT), was the dataset for the research. The system architecture and algorithms for semantic closeness and the matching function are outlined. Standalone and web interfaces are described and formative qualitative user studies are discussed. One user session is discussed in detail, together with a scenario based on a related public inquiry. Findings are set in context of the literature on thesaurus-based query expansion. This paper discusses the potential of query expansion techniques using the semantic relationships in a faceted thesaurus. Findings - Thesaurus-assisted retrieval systems have potential for multi-concept descriptors, permitting very precise queries and indexing. However, indexer and searcher may differ in terminology judgments and there may not be any exactly matching results. The integration of semantic closeness in the matching function permits ranked results for multi-concept queries in thesaurus-indexed applications. An in-memory representation of the thesaurus semantic network allows a combination of automatic and interactive control of expansion and control of expansion on individual query terms. Originality/value - The application of semantic expansion to browsing may be useful in interface options where thesaurus structure is hidden.
-
Sihvonen, A.; Vakkari, P.: Subject knowledge improves interactive query expansion assisted by a thesaurus (2004)
0.01
0.0139153 = product of:
0.097407095 = sum of:
0.097407095 = weight(_text_:assisted in 4417) [ClassicSimilarity], result of:
0.097407095 = score(doc=4417,freq=2.0), product of:
0.26102042 = queryWeight, product of:
6.7552447 = idf(docFreq=139, maxDocs=44218)
0.03863967 = queryNorm
0.37317806 = fieldWeight in 4417, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.7552447 = idf(docFreq=139, maxDocs=44218)
0.0390625 = fieldNorm(doc=4417)
0.14285715 = coord(1/7)
-
Cool, C.; Spink, A.: Issues of context in information retrieval (IR) : an introduction to the special issue (2002)
0.01
0.011601887 = product of:
0.081213206 = sum of:
0.081213206 = weight(_text_:great in 2587) [ClassicSimilarity], result of:
0.081213206 = score(doc=2587,freq=2.0), product of:
0.21757144 = queryWeight, product of:
5.6307793 = idf(docFreq=430, maxDocs=44218)
0.03863967 = queryNorm
0.37327147 = fieldWeight in 2587, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6307793 = idf(docFreq=430, maxDocs=44218)
0.046875 = fieldNorm(doc=2587)
0.14285715 = coord(1/7)
- Abstract
- The subject of context has received a great deal of attention in the information retrieval (IR) literature over the past decade, primarily in studies of information seeking and IR interactions. Recently, attention to context in IR has expanded to address new problems in new environments. In this paper we outline five overlapping dimensions of context which we believe to be important constituent elements and we discuss how they are related to different issues in IR research. The papers in this special issue are summarized with respect to how they represent work that is being conducted within these dimensions of context. We conclude with future areas of research which are needed in order to fully understand the multidimensional nature of context in IR.
-
Kelly, D.: Measuring online information seeking context : Part 1: background and method (2006)
0.01
0.009668238 = product of:
0.06767767 = sum of:
0.06767767 = weight(_text_:great in 206) [ClassicSimilarity], result of:
0.06767767 = score(doc=206,freq=2.0), product of:
0.21757144 = queryWeight, product of:
5.6307793 = idf(docFreq=430, maxDocs=44218)
0.03863967 = queryNorm
0.31105953 = fieldWeight in 206, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6307793 = idf(docFreq=430, maxDocs=44218)
0.0390625 = fieldNorm(doc=206)
0.14285715 = coord(1/7)
- Abstract
- Context is one of the most important concepts in information seeking and retrieval research. However, the challenges of studying context are great; thus, it is more common for researchers to use context as a post hoc explanatory factor, rather than as a concept that drives inquiry. The purposes of this study were to develop a method for collecting data about information seeking context in natural online environments, and identify which aspects of context should be considered when studying online information seeking. The study is reported in two parts. In this, the first part, the background and method are presented. Results and implications of this research are presented in Part 2 (Kelly, in press). Part 1 discusses previous literature on information seeking context and behavior and situates the current work within this literature. This part further describes the naturalistic, longitudinal research design that was used to examine and measure the online information seeking contexts of users during a 14-week period. In this design, information seeking context was characterized by a user's self-identified tasks and topics, and several attributes of these, such as the length of time the user expected to work on a task and the user's familiarity with a topic. At weekly intervals, users evaluated the usefulness of the documents that they viewed, and classified these documents according to their tasks and topics. At the end of the study, users provided feedback about the study method.
-
Kelly, D.: Measuring online information seeking context : Part 2: Findings and discussion (2006)
0.01
0.009668238 = product of:
0.06767767 = sum of:
0.06767767 = weight(_text_:great in 215) [ClassicSimilarity], result of:
0.06767767 = score(doc=215,freq=2.0), product of:
0.21757144 = queryWeight, product of:
5.6307793 = idf(docFreq=430, maxDocs=44218)
0.03863967 = queryNorm
0.31105953 = fieldWeight in 215, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6307793 = idf(docFreq=430, maxDocs=44218)
0.0390625 = fieldNorm(doc=215)
0.14285715 = coord(1/7)
- Abstract
- Context is one of the most important concepts in information seeking and retrieval research. However, the challenges of studying context are great; thus, it is more common for researchers to use context as a post hoc explanatory factor, rather than as a concept that drives inquiry. The purpose of this study was to develop a method for collecting data about information seeking context in natural online environments, and identify which aspects of context should be considered when studying online information seeking. The study is reported in two parts. In this, the second part, results and implications of this research are presented. Part 1 (Kelly, 2006) discussed previous literature on information seeking context and behavior, situated the current study within this literature, and described the naturalistic, longitudinal research design that was used to examine and measure the online information seeking context of seven users during a 14-week period. Results provide support for the value of the method in studying online information seeking context, the relative importance of various measures of context, how these measures change over time, and, finally, the relationship between these measures. In particular, results demonstrate significant differences in distributions of usefulness ratings according to task and topic.
-
Boyack, K.W.; Wylie,B.N.; Davidson, G.S.: Information Visualization, Human-Computer Interaction, and Cognitive Psychology : Domain Visualizations (2002)
0.01
0.005288292 = product of:
0.037018042 = sum of:
0.037018042 = product of:
0.074036084 = sum of:
0.074036084 = weight(_text_:22 in 1352) [ClassicSimilarity], result of:
0.074036084 = score(doc=1352,freq=4.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.54716086 = fieldWeight in 1352, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=1352)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 22. 2.2003 17:25:39
22. 2.2003 18:17:40
-
Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.01
0.0052351416 = product of:
0.03664599 = sum of:
0.03664599 = product of:
0.07329198 = sum of:
0.07329198 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.07329198 = score(doc=2134,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.5416616 = fieldWeight in 2134, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=2134)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 30. 3.2001 13:32:22
-
Hannech, A.: Système de recherche d'information étendue basé sur une projection multi-espaces (2018)
0.00
0.0038672956 = product of:
0.027071068 = sum of:
0.027071068 = weight(_text_:great in 4472) [ClassicSimilarity], result of:
0.027071068 = score(doc=4472,freq=2.0), product of:
0.21757144 = queryWeight, product of:
5.6307793 = idf(docFreq=430, maxDocs=44218)
0.03863967 = queryNorm
0.12442382 = fieldWeight in 4472, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6307793 = idf(docFreq=430, maxDocs=44218)
0.015625 = fieldNorm(doc=4472)
0.14285715 = coord(1/7)
- Abstract
- Since its appearance in the early 90's, the World Wide Web (WWW or Web) has provided universal access to knowledge and the world of information has been primarily witness to a great revolution (the digital revolution). It quickly became very popular, making it the largest and most comprehensive database and knowledge base thanks to the amount and diversity of data it contains. However, the considerable increase and evolution of these data raises important problems for users, in particular for accessing the documents most relevant to their search queries. In order to cope with this exponential explosion of data volume and facilitate their access by users, various models are offered by information retrieval systems (IRS) for the representation and retrieval of web documents. Traditional SRIs use simple keywords that are not semantically linked to index and retrieve these documents. This creates limitations in terms of the relevance and ease of exploration of results. To overcome these limitations, existing techniques enrich documents by integrating external keywords from different sources. However, these systems still suffer from limitations that are related to the exploitation techniques of these sources of enrichment. When the different sources are used so that they cannot be distinguished by the system, this limits the flexibility of the exploration models that can be applied to the results returned by this system. Users then feel lost to these results, and find themselves forced to filter them manually to select the relevant information. If they want to go further, they must reformulate and target their search queries even more until they reach the documents that best meet their expectations. In this way, even if the systems manage to find more relevant results, their presentation remains problematic. In order to target research to more user-specific information needs and improve the relevance and exploration of its research findings, advanced SRIs adopt different data personalization techniques that assume that current research of user is directly related to his profile and / or previous browsing / search experiences.
-
Rekabsaz, N. et al.: Toward optimized multimodal concept indexing (2016)
0.00
0.003739387 = product of:
0.026175708 = sum of:
0.026175708 = product of:
0.052351415 = sum of:
0.052351415 = weight(_text_:22 in 2751) [ClassicSimilarity], result of:
0.052351415 = score(doc=2751,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.38690117 = fieldWeight in 2751, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=2751)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 1. 2.2016 18:25:22
-
Kozikowski, P. et al.: Support of part-whole relations in query answering (2016)
0.00
0.003739387 = product of:
0.026175708 = sum of:
0.026175708 = product of:
0.052351415 = sum of:
0.052351415 = weight(_text_:22 in 2754) [ClassicSimilarity], result of:
0.052351415 = score(doc=2754,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.38690117 = fieldWeight in 2754, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=2754)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 1. 2.2016 18:25:22
-
Marx, E. et al.: Exploring term networks for semantic search over RDF knowledge graphs (2016)
0.00
0.003739387 = product of:
0.026175708 = sum of:
0.026175708 = product of:
0.052351415 = sum of:
0.052351415 = weight(_text_:22 in 3279) [ClassicSimilarity], result of:
0.052351415 = score(doc=3279,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.38690117 = fieldWeight in 3279, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=3279)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Source
- Metadata and semantics research: 10th International Conference, MTSR 2016, Göttingen, Germany, November 22-25, 2016, Proceedings. Eds.: E. Garoufallou
-
Kopácsi, S. et al.: Development of a classification server to support metadata harmonization in a long term preservation system (2016)
0.00
0.003739387 = product of:
0.026175708 = sum of:
0.026175708 = product of:
0.052351415 = sum of:
0.052351415 = weight(_text_:22 in 3280) [ClassicSimilarity], result of:
0.052351415 = score(doc=3280,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.38690117 = fieldWeight in 3280, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=3280)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Source
- Metadata and semantics research: 10th International Conference, MTSR 2016, Göttingen, Germany, November 22-25, 2016, Proceedings. Eds.: E. Garoufallou
-
Sacco, G.M.: Dynamic taxonomies and guided searches (2006)
0.00
0.0037018044 = product of:
0.02591263 = sum of:
0.02591263 = product of:
0.05182526 = sum of:
0.05182526 = weight(_text_:22 in 5295) [ClassicSimilarity], result of:
0.05182526 = score(doc=5295,freq=4.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.38301262 = fieldWeight in 5295, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=5295)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 22. 7.2006 17:56:22
-
Efthimiadis, E.N.: End-users' understanding of thesaural knowledge structures in interactive query expansion (1994)
0.00
0.0029915096 = product of:
0.020940566 = sum of:
0.020940566 = product of:
0.041881133 = sum of:
0.041881133 = weight(_text_:22 in 5693) [ClassicSimilarity], result of:
0.041881133 = score(doc=5693,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.30952093 = fieldWeight in 5693, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=5693)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 30. 3.2001 13:35:22
-
Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996)
0.00
0.0026175708 = product of:
0.018322995 = sum of:
0.018322995 = product of:
0.03664599 = sum of:
0.03664599 = weight(_text_:22 in 6958) [ClassicSimilarity], result of:
0.03664599 = score(doc=6958,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.2708308 = fieldWeight in 6958, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=6958)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998)
0.00
0.0026175708 = product of:
0.018322995 = sum of:
0.018322995 = product of:
0.03664599 = sum of:
0.03664599 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
0.03664599 = score(doc=1319,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.2708308 = fieldWeight in 1319, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=1319)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 1. 8.1996 22:08:06
-
Faaborg, A.; Lagoze, C.: Semantic browsing (2003)
0.00
0.0026175708 = product of:
0.018322995 = sum of:
0.018322995 = product of:
0.03664599 = sum of:
0.03664599 = weight(_text_:22 in 1026) [ClassicSimilarity], result of:
0.03664599 = score(doc=1026,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.2708308 = fieldWeight in 1026, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=1026)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Source
- Research and advanced technology for digital libraries : 7th European Conference, proceedings / ECDL 2003, Trondheim, Norway, August 17-22, 2003
-
Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie (2005)
0.00
0.0026175708 = product of:
0.018322995 = sum of:
0.018322995 = product of:
0.03664599 = sum of:
0.03664599 = weight(_text_:22 in 1852) [ClassicSimilarity], result of:
0.03664599 = score(doc=1852,freq=2.0), product of:
0.13530953 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03863967 = queryNorm
0.2708308 = fieldWeight in 1852, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=1852)
0.5 = coord(1/2)
0.14285715 = coord(1/7)
- Date
- 11. 2.2011 18:22:58
