Leif Azzopardi
Leif Azzopardi

http://leifos.me
leifosatacm.org

  Affiliation history
Bibliometrics: publication history
Average citations per article8.50
Citation Count1,215
Publication count143
Publication years2003-2017
Available for download92
Average downloads per article266.48
Downloads (cumulative)24,516
Downloads (12 Months)2,802
Downloads (6 Weeks)346
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143 results found Export Results: bibtexendnoteacmrefcsv

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1 published by ACM
November 2017 CIKM '17: Proceedings of the 2017 ACM on Conference on Information and Knowledge Management
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 8,   Downloads (12 Months): 27,   Downloads (Overall): 27

Full text available: PDFPDF
Algorithmic bias presents a difficult challenge within Information Retrieval. Long has it been known that certain algorithms favour particular documents due to attributes of these documents that are not directly related to relevance. The evaluation of bias has recently been made possible through the use of retrievability, a quantifiable measure ...
Keywords: bias, performance, retrievability

2 published by ACM
November 2017 CIKM '17: Proceedings of the 2017 ACM on Conference on Information and Knowledge Management
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 4,   Downloads (12 Months): 22,   Downloads (Overall): 22

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Prior work on using retrievability measures in the evaluation of information retrieval (IR) systems has laid out the foundations for investigating the relation between retrieval performance and retrieval bias. While various factors influencing retrievability have been examined, showing how the retrieval model may influence bias, no prior work has examined ...
Keywords: indexing, pruning, retrievability

3 published by ACM
November 2017 CIKM '17: Proceedings of the 2017 ACM on Conference on Information and Knowledge Management
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 9,   Downloads (12 Months): 25,   Downloads (Overall): 25

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The PICO process is a technique used in evidence based practice to frame and answer clinical questions. It involves structuring the question around four types of clinical information: population, intervention, control or comparison and outcome. The PICO framework is used extensively in the compilation of systematic reviews as the means ...
Keywords: information retrieval, systematic reviews, pico framework

4 published by ACM
October 2017 ICTIR '17: Proceedings of the ACM SIGIR International Conference on Theory of Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 6,   Downloads (12 Months): 24,   Downloads (Overall): 24

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For improving the effectiveness of Interactive Information Retrieval (IIR) , a system should minimise the search time by guiding the user appropriately. As a prerequisite, in any search situation, the system must be able to estimate the time the user will need for finding the next relevant document. In this ...
Keywords: search strategies, evaluation, search behavior, user modeling

5 published by ACM
October 2017 ICTIR '17: Proceedings of the ACM SIGIR International Conference on Theory of Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 4,   Downloads (12 Months): 16,   Downloads (Overall): 16

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In this work, the relationship between performance and retrievability bias is explored when various query expansion methods are employed to aide retrieval. Several parameters are altered, independently, to identify those that have an impact on bias. Parameters altered include; Rocchio's beta, length normalisation parameters, the number of terms added and ...
Keywords: bias, query expansion, effectiveness, retrievability

6 published by ACM
August 2017 SIGIR '17: Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 8,   Downloads (12 Months): 47,   Downloads (Overall): 47

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This paper introduces a test collection for evaluating the effectiveness of different methods used to retrieve research studies for inclusion in systematic reviews. Systematic reviews appraise and synthesise studies that meet specific inclusion criteria. Systematic reviews intended for a biomedical science audience use boolean queries with many, often complex, search ...
Keywords: evidence based medicine, ir evaluation, systematic reviews, test collection

7 published by ACM
August 2017 SIGIR '17: Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 25,   Downloads (12 Months): 212,   Downloads (Overall): 212

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The design and presentation of a Search Engine Results Page (SERP) has been subject to much research. With many contemporary aspects of the SERP now under scrutiny, work still remains in investigating more traditional SERP components, such as the result summary . Prior studies have examined a variety of different ...
Keywords: snippets, user study, information retrieval, result summary, interactive information retrieval, search, search behavior, search performance, serp

8 published by ACM
August 2017 SIGIR '17: Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 6,   Downloads (12 Months): 51,   Downloads (Overall): 51

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People tend to type short queries, however, the belief is that longer queries are more effective. Consequently, a number of attempts have been made to encourage and motivate people to enter longer queries. While most have failed, a recent attempt - conducted in a laboratory setup - in which the ...
Keywords: a/b testing, halo, research replication, query length

9 published by ACM
August 2017 SIGIR '17: Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 7,   Downloads (12 Months): 60,   Downloads (Overall): 60

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As an empirical discipline, information access and retrieval research requires substantial software infrastructure to index and search large collections. This workshop is motivated by the desire to better align information retrieval research with the practice of building search applications from the perspective of open-source information retrieval systems. Our goal is ...
Keywords: open-source software, information retrieval toolkits

10 published by ACM
August 2017 ACM SIGIR Forum: Volume 51 Issue 1, June 2017
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 2,   Downloads (12 Months): 18,   Downloads (Overall): 18

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The Information Retrieval Festival took place in April 2017 in Glasgow. The focus of the workshop was to bring together IR researchers from the various Scottish universities and beyond in order to facilitate more awareness, increased interaction and reflection on the status of the field and its future. The program ...

11
August 2017 Information Retrieval: Volume 20 Issue 4, August 2017
Publisher: Kluwer Academic Publishers
Bibliometrics:
Citation Count: 0

A searcher's interaction with a retrieval system consists of actions such as query formulation, search result list interaction and document interaction. The simulation of searcher interaction has recently gained momentum in the analysis and evaluation of interactive information retrieval (IIR). However, a key issue that has not yet been adequately ...
Keywords: Session-based evaluation, Simulation, IR interaction

12 published by ACM
March 2017 CHIIR '17: Proceedings of the 2017 Conference on Conference Human Information Interaction and Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 7,   Downloads (12 Months): 47,   Downloads (Overall): 47

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The workshop on the evaluation of collaborative information retrieval and seeking (ECol) is held in conjunction with the ACM SIGIR Conference on Human Information Interaction & Retrieval (CHIIR) in Oslo, Norway. To make the workshop active and the participant pro-active, we released datasets and tools so as to help researchers ...
Keywords: evaluation, task, collaborative information retrieval, social information retrieval

13 published by ACM
March 2017 CHIIR '17: Proceedings of the 2017 Conference on Conference Human Information Interaction and Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 6,   Downloads (12 Months): 69,   Downloads (Overall): 69

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Modeling how people interact with search interfaces has been of particular interest and importance to the field of Interactive Information Retrieval. Recently, there has been a move to developing formal models of the interaction between the user and the system, whether it be to: (i) run a simulation, (ii) conduct ...
Keywords: search behaviour, user models, evaluation, retrieval strategies

14 published by ACM
February 2017 ACM SIGIR Forum: Volume 50 Issue 2, December 2016
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 6,   Downloads (12 Months): 44,   Downloads (Overall): 44

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The workshop and hackathon on developing Information Retrieval Evaluation Resources using Lucene (L4IR) was held on the 8th and 9th of September, 2016 at the University of Strathclyde in Glasgow, UK and funded by the ESF Elias Network. The event featured three main elements: (i) a series of keynote and ...

15 published by ACM
October 2016 CIKM '16: Proceedings of the 25th ACM International on Conference on Information and Knowledge Management
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 6,   Downloads (12 Months): 107,   Downloads (Overall): 160

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Most of the current models that are used to simulate users in Interactive Information Retrieval (IIR) lack realism and agency. Such models generally make decisions in a stochastic manner, without recourse to the actual information encountered or the underlying information need. In this paper, we develop a more sophisticated model ...
Keywords: agents, interactive information retrieval, user modeling, simulation, continuation strategies, querying strategies, autonomous agents, stopping strategies

16
October 2016 ASIST '16: Proceedings of the 79th ASIS&T Annual Meeting: Creating Knowledge, Enhancing Lives through Information & Technology
Publisher: American Society for Information Science
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 1,   Downloads (12 Months): 8,   Downloads (Overall): 12

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Pienapple is a search interface that aims to combine bookmarking and searching within a blended experience to facilitate improved access, serendipity, and sharing. While personal and social bookmarking platforms already exist, they are often separated from the search system, resulting in an increased effort and complexity because two or more ...
Keywords: collaborative search, interactive information retrieval, re-finding, social search

17 published by ACM
September 2016 ICTIR '16: Proceedings of the 2016 ACM International Conference on the Theory of Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 5
Downloads (6 Weeks): 2,   Downloads (12 Months): 24,   Downloads (Overall): 81

Full text available: PDFPDF
Interactive Information Retrieval (IR) systems often provide various features and functions, such as query suggestions and relevance feedback, that a user may or may not decide to use. The decision to take such an option has associated costs and may lead to some benefit. Thus, a savvy user would take ...
Keywords: search behaviour, user models, evaluation, measures, retrieval strategies

18 published by ACM
September 2016 ICTIR '16: Proceedings of the 2016 ACM International Conference on the Theory of Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 1,   Downloads (12 Months): 12,   Downloads (Overall): 28

Full text available: PDFPDF
Retrievability is an independent evaluation measure that offers insights to an aspect of retrieval systems that performance and efficiency measures do not. Retrievability is often used to calculate the retrievability bias, an indication of how accessible a system makes all the documents in a collection. Generally, computing the retrievability bias ...
Keywords: bias, evaluation, retrievability

19 published by ACM
September 2016 ICTIR '16: Proceedings of the 2016 ACM International Conference on the Theory of Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 2
Downloads (6 Weeks): 2,   Downloads (12 Months): 28,   Downloads (Overall): 83

Full text available: PDFPDF
Searching is performed in the context of a task and as such the value of the information found is with respect to the task. Recently, there has been a drive to developing formal models of information seeking and retrieval that consider the costs and benefits arising through the interaction with ...
Keywords: search behaviour, user models, evaluation, retrieval strategies

20 published by ACM
July 2016 SIGIR '16: Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 4,   Downloads (12 Months): 68,   Downloads (Overall): 120

Full text available: PDFPDF
Individuals living in highly networked societies publish a large amount of personal, and potentially sensitive, information online. Web investigators can exploit such information for a variety of purposes, such as in background vetting and fraud detection. However, such investigations require a large number of expensive man hours and human effort. ...
Keywords: open-source intelligence, entity search, people searching, professional search, web investigation



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