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Combining concepts and language models for information access

Edgar Meij
2011 SIGIR Forum  
This, in turn, allows us to account for the language associated with concepts within the retrieval model in a principled and transparent manner.  ...  The main contribution is a set of models and methods that enable users to retrieve and access information on a conceptual level.  ...  TREC Genomics 2004-2006 The document collection for the TREC 2004 and 2005 Genomics ad hoc search task (TREC-GEN-04 and TREC-GEN-05) consists of a subset of the MEDLINE database [129, 130] .  ... 
doi:10.1145/1988852.1988873 fatcat:5zppjnfynzhpxblsvkjdftdnua

Test Collection Based Evaluation of Information Retrieval Systems

Mark Sanderson
2010 Foundations and Trends in Information Retrieval  
in retrieval experimentation.  ...  This tutorial and review shows that despite its age, this long-standing evaluation method is still a highly valued tool for retrieval research.  ...  Following on from this, the novelty track of TREC [103] and the QA track [272] both encouraged the building of systems that retrieved fragments of documents (sentences for the novelty track, so-called  ... 
doi:10.1561/1500000009 fatcat:qdacqkqj25eojkpchctdzvrt2e

Effective focused retrieval by exploiting query context and document structure

Rianne Kaptein
2012 SIGIR Forum  
Figure 2 . 2 : 22 Page of category 'Amsterdam' in the DMOZ directory. . 3 . 3 The queries in the user study are taken from the three TREC Terabyte tracks 2004, 2005 and 2006 (.GOV2 collection of 25M  ...  Combining the textual and conceptual information leads to significant improvements on the TREC Genomics test collection.  ...  We kunnen ook gebruik maken van de structuur van Wikipedia om entiteiten te vinden in het algemene Web door het volgen van externe links en door het zoeken van entiteiten gevonden in Wikipedia in een algemene  ... 
doi:10.1145/2093346.2093366 fatcat:f6n2nplok5f7pd3ijcrghrkg2y

Recent Developments in the Evaluation of Information Retrieval Systems: Moving Towards Diversity and Practical Relevance

Thomas Mandl
2008 Informatica   unpublished
Very often, text collections need to be processed by retrieval systems. Information retrieval is the basic technology behind Web search engines and an everyday technology for many Web users.  ...  As a consequence, information retrieval evaluation experiments try to evaluate only the system. The user is an abstraction and not a real user.  ...  This aspect has been evaluated in the Genomics Track (Hersh et al. 2006 ) and has previously been researched in the Novelty Track.  ... 

Efficient query processing and index tuning using proximity scores [article]

Andreas Broschart, Universität Des Saarlandes, Universität Des Saarlandes
did not work for their experiments in the TREC Terabyte Track, and Mitra et al.  ...  top-10 retrieval of 100 Ad Hoc topics from the 2004 and 2005 TREC Terabyte Track, Ad Hoc Tasks.  ...  revolution country 401 movie award "eddie murphy" "jim carrey" "robin williams" 402 country european capital 403 color television analog standard description 404 french france singer 405 "The Old Man and  ... 
doi:10.22028/d291-26400 fatcat:sec7mzcq6bg3peatd5lypsituy

Knowledge mining over scientific literature and technical documentation

Fabio Rinaldi
This dissertation describes in particular: (1) the extraction of domain specific lexical items which refer to entities of the domain; (2) the detection of relationships (like synonymy and hyponymy) among  ...  This dissertation focuses on the extraction of information implicitly encoded in domain descriptions (technical terminology and related items) and its usage within a restricted-domain question answering  ...  The relevance of question answering for the genomics domains is testified by the "roadmap" for the genomics track of TREC [TREC-GE, 2003 ] which foresees question answering as an advanced topic.  ... 
doi:10.5167/uzh-163850 fatcat:43diwugmbjhe3cgk44w22npsca

Search Relevance based on the Semantic Web

Veli Bicer
In this thesis, we explore the challenge of search relevance in the context of semantic search.  ...  Specifically, the notion of semantic relevance can be distinguished from the other types of relevance in Information Retrieval (IR) in terms of employing an underlying semantic model.  ...  TREC Genomics [92] or CLEF domain-specific track [177] ). This prevents its applicability to more general scenarios such as ad-hoc document retrieval.  ... 
doi:10.5445/ir/1000031130 fatcat:x4x55ods4nbgpe2p2xnhq2zody

Large-Scale Pattern-Based Information Extraction from the World Wide Web

Sebastian Blohm
It thus allows systems to automatically aggregate information for further analysis, efficient retrieval, automatic validation, or appropriate visualization.  ...  Extracting information from text is the task of obtaining structured, machine-processable facts from information that is mentioned in an unstructured manner.  ...  Precision and recall are reported to be around 70%-80% on a TREC information retrieval evaluation corpus.  ... 
doi:10.5445/ir/1000015423 fatcat:4ptk57kpcjh4ncjfnqj7uqtfle