The study of interactive information retrieval (IR) has been a small but constant part of the Text REtrieval Conferences (TREC 1±8) from the beginning. The main arena for such work has been the Interactive Track (TREC 3±8). This report presents a bibliography of those e€orts together with a summary of the evolving experimental framework within which the studies took place. Published by Elsevier...

MG4J participated in the ad hoc task of the Terabyte Track (find all the relevant documents with high precision from 25.2 million pages from the .gov domain) at TREC 2006. It was the second time the MG4J group participated to TREC. For this year, we integrated standard techniques (such as stemming and BM25 scoring) into MG4J, and submitted also automatic runs based on trivial query expansion te...

CAS-ICT took part in the TREC conference for the first time this year. We have participated in three tracks of TREC-10. For adaptive filtering track, we paid more attention to feature selection and profile adaptation. For web track, we tried to integrate different ranking methods to improve system performance. For QA track, we focused on question type identification, named entity tagging and an...

The TREC 2012 Medical Records Track task involves the identification of electronic medical records (EMRs) that are relevant to a set of search topics. Atigeo has a Computer-Aided Coding (CAC) product that analyzes electronic medical records (EMRs) and recommends ICD-9 codes that represent the diagnoses and procedures described in those medical records. We have developed a suite of natural langu...

This decade has seen a great deal of progress in the development of information retrieval systems. Unfortunately, we still lack a systematic understanding of the behavior of the systems and their relationship with documents. In this paper we present a completely new approach towards the understanding of the information retrieval systems. Recently, it has been observed that retrieval systems in ...

The TREC 2014 Clinical Decision Support Track task involves retrieval and ranking of medical journal articles with respect to their relevance to prescribing tests, diagnosing or treating a patient represented in a short case report. The Atigeo xPatternsTM platform supports a variety of ensemble methods for developing and tuning information retrieval (IR) system components for a task and/or doma...

Most test collections (like TREC and CLEF) for experimental research in information retrieval apply binary relevance assessments. This paper introduces a four-point relevance scale and reports the findings of a project in which TREC-7 and TREC8 document pools on 38 topics were reassessed. The goal of the reassessment was to build a subcollection of TREC for experiments on highly relevant docume...

This Paper presents the work done for the TREC 2009 faceted blog distillation task of blog track. In our approach, we use a mixture of language models based on global representation. Our model can be regarded as a combination of topic relevance model and faceted relevance model. By pseudorelevance feedback method, we can estimate the above two models from topic relevance feedback documents and ...