Unrefereed

Unrefereed papers, such as technical reports and TREC working note papers.

TREC

The University of Amsterdam at the TREC 2011 Session Track

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3 months ago
by in ,

We describe the par­tic­i­pa­tion of the Uni­ver­sity of Amsterdam’s ILPS group in the Ses­sion track at TREC 2011.

The stream of inter­ac­tions cre­ated by a user engag­ing with a search sys­tem con­tains a wealth of infor­ma­tion. For retrieval pur­poses, pre­vi­ous inter­ac­tions can help inform us about a user’s cur­rent More >

P30 difference plot

Team COMMIT at TREC 2011

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3 months ago
by in ,

We describe the par­tic­i­pa­tion of Team COMMIT in this year’s Microblog and Entity track.

In our par­tic­i­pa­tion in the Microblog track, we used a feature-based approach. Specif­i­cally, we pur­sued a pre­ci­sion ori­ented recency-aware retrieval approach for tweets. Amongst oth­ers we used var­i­ous types of exter­nal data. In par­tic­u­lar, we More >

Dutch Belgian Information Retrieval Workshop logo

Dir 2011: the eleventh Dutch-Belgian information retrieval workshop

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1 year ago
by in ,

The 11th edi­tion of the annual Dutch-Belgian Infor­ma­tion Retrieval work­shop (DIR 2011) took place on Feb­ru­ary 4 in Ams­ter­dam. It was orga­nized by the Uni­ver­sity of Ams­ter­dam and the Cen­trum Wiskunde & Infor­mat­ica. The focus of this year’s work­shop was on inter­ac­tion, with the goal of facil­i­tat­ing and increas­ing More >

TREC

The University of Amsterdam at Trec 2010: Session, Entity, and Relevance Feedback

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1 year ago
by in ,

We describe the par­tic­i­pa­tion of the Uni­ver­sity of Amsterdam’s ILPS group in the ses­sion, entity, and rel­e­vance feed­back track at TREC 2010. In the Ses­sion Track we explore the use of blind rel­e­vance feed­back to bias a follow-up query towards or against the top­ics cov­ered in doc­u­ments returned More >

TREC

Heuristic Ranking and Diversification of Web Documents

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2 years ago
by in ,

We describe the par­tic­i­pa­tion of the Uni­ver­sity of Amsterdam’s Intel­li­gent Sys­tems Lab in the web track at TREC 2009. We par­tic­i­pated in the adhoc and diver­sity task. We find that spam is an impor­tant issue in the ad hoc task and that Wikipedia-based heuris­tic opti­miza­tion approaches help to boost More >

TREC

Topical Diversity and Relevance Feedback

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2 years ago
by in ,

We describe the par­tic­i­pa­tion of the Uni­ver­sity of Amsterdam’s Intel­li­gent Sys­tems Lab in the rel­e­vance feed­back track at TREC 2009. Our main con­clu­sion for the rel­e­vance feed­back track is that a top­i­cal diver­sity approach pro­vides good feed­back doc­u­ments. Fur­ther, we find that our rel­e­vance feed­back algo­rithm seems to help More >

i found you!

A Semantic Perspective on Query Log Analysis

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2 years ago
by in ,

We present our views on the CLEF log file analy­sis task. We argue for a task def­i­n­i­tion that focuses on the seman­tic enrich­ment of query logs. In addi­tion, we dis­cuss how addi­tional infor­ma­tion about the con­text in which queries are being made could fur­ther our under­stand­ing of users’ infor­ma­tion More >

TREC

Incorporating Non-Relevance Information in the Estimation of Query Models

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3 years ago
by in ,

We describe the par­tic­i­pa­tion of the Uni­ver­sity of Amsterdam’s ILPS group in the rel­e­vance feed­back track at TREC 2008. We intro­duce a new model which incor­po­rates infor­ma­tion from rel­e­vant and non-relevant doc­u­ments to improve the esti­ma­tion of query mod­els. Our main find­ings are twofold: (i) in terms of More >

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