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CLEF 2002 — Overview of Results [chapter]

Martin Braschler
2003 Lecture Notes in Computer Science  
Slide 19 "Effect" of CLEF in 2003  ...  " ¦ ' 6 £ 8 7 9 7 ¡ ¢ ¢ £ Slide 16 Preliminary Trends for CLEF-2003 (2) • Stemming and decompounding are still actively debated; maybe even more use of linguistics than before?  ...  Conclusions and Outlook • Four years of CLEF campaigns are behind us, coupled with substantial growth • CLIR as evaluated in the core tracks may be "matured"  ... 
doi:10.1007/978-3-540-45237-9_2 fatcat:jqtavmax45byxmenstskshicq4

Eurospider at CLEF 2002 [chapter]

Martin Braschler, Anne Göhring, Peter Schäuble
2003 Lecture Notes in Computer Science  
In this paper, we describe the setup of our system, the characteristics of our experiments, and give a first analysis of some of the results.  ...  For the CLEF 2002 campaign, Eurospider participated in the multilingual and German monolingual tasks. Our main focus was on trying new merging strategies for our multilingual experiments.  ...  Introduction In the following, we describe our experiments carried out for CLEF 2002.  ... 
doi:10.1007/978-3-540-45237-9_13 fatcat:3vanxs5sxvcb7apbzs2jmn43ty

UTACLIR @ CLEF 2002: Towards a Unified Translation Process Model

Eija Airio, Heikki Keskustalo, Turid Hedlund, Ari Pirkola
2002 Conference and Labs of the Evaluation Forum  
The UTACLIR query translation system was originally designed for the CLEF 2000 and 2001 campaigns.  ...  This year we participated in CLEF with the new UTACLIR system, which is a single program unified for all the languages.  ...  Acknowledgements The InQuery search engine was provided by the Center for Intelligent Information Retrieval at the University of Massachusetts. ENGTWOL (Morphological  ... 
dblp:conf/clef/AirioKHP02a fatcat:izn7n6novfeahfkgskl2nsw32i

Report on CLEF 2002 Experiments: Combining Multiple Sources of Evidence [chapter]

Jacques Savoy
2003 Lecture Notes in Computer Science  
This first section will deal with these issues and is organized as follows: Section 1.1 contains an overview of our eight test-collections while Section 1.2 describes our general approach to building stopword  ...  For our second participation in the CLEF retrieval tasks, our first objective was to propose better and more general stopword lists for various European languages (namely, French, Italian, German, Spanish  ...  result in better performance while according to Molina-Salgado [2002], the decomposition of German words seems to reduce average precision.  ... 
doi:10.1007/978-3-540-45237-9_6 fatcat:az27mhgisba3va3cfauz6izwxa

The CLEF 2001 Interactive Track [chapter]

Douglas W. Oard, Julio Gonzalo
2002 Lecture Notes in Computer Science  
This paper describes the shared experiment design used at all three participating sites, summarizes preliminary results from the evaluation, and concludes with observations on lessons learned that can  ...  inform the design of subsequent evaluation campaigns.  ...  -Fig. 2 .Fig. 3 . 23 The display of translated phrases (UNED's pseudo-translations) appears to increase recall with no adverse affect on precision. Overview Overview of English results.  ... 
doi:10.1007/3-540-45691-0_30 fatcat:gtwzsx4kfbavnd6pyfh6pgeuxu

Dictionary-Based Cross-Language Information Retrieval: Learning Experiences from CLEF 2000–2002

Turid Hedlund, Eija Airio, Heikki Keskustalo, Raija Lehtokangas, Ari Pirkola, Kalervo Järvelin
2004 Information retrieval (Boston)  
In this study the basic framework and performance analysis results are presented for the three year long development process of the dictionary-based UTACLIR system.  ...  The results and the fault analysis have been valuable in the development process. Overall the results indicate that the process is robust and can be extended to other languages.  ...  For CLEF 2002 the process was redesigned (Hedlund et al. 2002a; Keskustalo et al. 2002; Airio et al. 2002) .  ... 
doi:10.1023/b:inrt.0000009442.34054.55 fatcat:6mucmegfgnbgrbgfjhfq22hgzq

Report on CLEF-2001 Experiments: Effective Combined Query-Translation Approach [chapter]

Jacques Savoy
2002 Lecture Notes in Computer Science  
In our first participation in clef retrieval tasks, the primary objective was to define a general stopword list for various European languages (namely, French, Italian, German and Spanish) and also to  ...  This value of 5 was chosen for two reasons; it results in better performance when using the clef-2000 corpora [13] , and it is also close to the mean word length of our German corpora (mean word length  ...  the queries of the clef-2001 test collection C041 <en-title> Pesticides in Baby Food C042 <en-title> U.N.  ... 
doi:10.1007/3-540-45691-0_3 fatcat:abaecpe2svha3forfz34mquxli

Query Expansion Techniques for the CLEF Bilingual Track [chapter]

Fatiha Sadat, Akira Maeda, Masatoshi Yoshikawa, Shunsuke Uemura
2002 Lecture Notes in Computer Science  
This paper evaluates the effectiveness of a query translation and disambiguation as well as expansion techniques on CLEF Collections, using SMART Information Retrieval System.  ...  This method achieved 85.30% of the monolingual counterpart, in terms of average precision.  ...  Acknowledgment This work is partially supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan, under grants 11480088, 12680417 and 12208032, and by CREST of JST (Japan Science  ... 
doi:10.1007/3-540-45691-0_15 fatcat:m4fhhnks7ngltpdugbfiqhq3di

IR-n: A Passage Retrieval System at CLEF-2001 [chapter]

Fernando Llopis, José L. Vicedo
2002 Lecture Notes in Computer Science  
(Spanish-English) tasks at CLEF-2001.  ...  Previous works showed that the use of document passages like basic unit of information, to calculate the relevance of a document to a question, improve the results of the information retrieval systems  ...  Results of IR-n system al clef 2001 Tables 2 and 3 depicts the results of our runs and the median results obtained by the other systems at clef 2001.  ... 
doi:10.1007/3-540-45691-0_22 fatcat:zjyz2rxofjamfdr2rpvfj7wliu

Exeter at CLEF 2001: Experiments with Machine Translation for Bilingual Retrieval [chapter]

Gareth J. F. Jones, Adenike M. Lam-Adesina
2002 Lecture Notes in Computer Science  
The University of Exeter participated in the CLEF 2001 bilingual task.  ...  We also report recent experimental results from our investigations of the combination of results from alternative machine translation outputs; specifically we look at the use of data fusion of the output  ...  Experimental Results This section describes the establishment of the parameters of our experimental system and gives results from our CLEF 2001 investigation.  ... 
doi:10.1007/3-540-45691-0_5 fatcat:lfcdffoibbhmniha2yoe5fwqpu

The Scholarly Impact of CLEF (2000–2009) [chapter]

Theodora Tsikrika, Birger Larsen, Henning Müller, Stefan Endrullis, Erhard Rahm
2013 Lecture Notes in Computer Science  
Our analysis indicates a significant impact of CLEF, particularly for its well-established Adhoc, ImageCLEF, and QA labs, and for the lab/task overview publications that attract considerable interest.  ...  This paper assesses the scholarly impact of the CLEF evaluation campaign by performing a bibliometric analysis of the citations of the CLEF 2000-2009 proceedings publications collected through Scopus and  ...  Overview of the CLEF 2005 Multilingual QA Track. 2005 O 6 5 6 90 91 11 Chen Cross-Language Retrieval Experiments at CLEF 2002. 2002 P 7 12 29 90 80 5 Grubinger et al.  ... 
doi:10.1007/978-3-642-40802-1_1 fatcat:533ffulnnbcedphg33kgobcney

How Do Named Entities Contribute to Retrieval Effectiveness? [chapter]

Thomas Mandl, Christa Womser-Hacker
2005 Lecture Notes in Computer Science  
Named entities in topics are a major factor contributing to the quality of retrieval results.  ...  In this paper, we report on an analysis on the correlation between the number of named entities present in a topic and the retrieval quality achieved for these topics by retrieval systems within CLEF.  ...  Furthermore, we acknowledge the work of several students from the University of Hildesheim who contributed to this analysis as part of their course work.  ... 
doi:10.1007/11519645_81 fatcat:swhkzhmuejekva7rwhgkrqdrty

The effect of named entities on effectiveness in cross-language information retrieval evaluation

Thomas Mandl, Christa Womser-Hacker
2005 Proceedings of the 2005 ACM symposium on Applied computing - SAC '05  
Acknowledgements • We thank Martin Braschler for providing the CLEF data in digital format • Part of this work was supported by a grant from the German Research Foundation (DFG) Download this presentation  ...  number of named entities Number of topics CLEF year 1.44 72 50 2004 1.62 97 60 2003 1.72 86 50 2002 1.20 60 50 2001 1.30 52 40 2000 Analyzed Runs (examples) CLEF year  ...  for the exchange of experiences and ideas -transfer research into applications Cross-Language Evaluation Forum Results of CLEF -Effective approaches for individual  ... 
doi:10.1145/1066677.1066919 dblp:conf/sac/MandlW05 fatcat:jfkpcqfccjh6vej7i3cl72bv5y

Combination Approaches for Multilingual Text Retrieval

Martin Braschler
2004 Information retrieval (Boston)  
We discuss the implications of building a system that allows flexible combination, give details of the various translation resources and methods, and investigate the impact of merging intermediate results  ...  An analysis of the resulting combination system is given which also takes into account additional requirements when deploying the system as a component in an operational, commercial setting.  ...  Acknowledgments Peter Schäuble, Bärbel Ripplinger and Anne Göhring were involved in planning and conducting the Eurospider participation in the three CLEF campaigns.  ... 
doi:10.1023/b:inrt.0000009445.19495.46 fatcat:qzdsergfjncdtfjstub4usp7vm

Combining Evidence for Cross-Language Information Retrieval [chapter]

Jaap Kamps, Christof Monz, Maarten de Rijke
2003 Lecture Notes in Computer Science  
This paper describes the official runs of our team for CLEF 2002.  ...  We took part in the monolingual tasks for each of the seven non-English languages for which CLEF provides document collections (Dutch, Finnish, French, German, Italian, Spanish, and Swedish).  ...  Section 3 describes our official runs for CLEF 2002, and in Section 4 we discuss the results we have obtained.  ... 
doi:10.1007/978-3-540-45237-9_9 fatcat:prfk33uno5b6ra4bzatq5gv42y
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