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Awad, G. (author), Over, P. (author), Kraaij, W. (author)This article presents an overview of the video copy detection benchmarkwhichwas run over a period of 4 years (2008-2011) as part of the TREC Video Retrieval (TRECVID) workshop series. The main contributions of the article include i) an examination of the evolving design of the evaluation framework and its components (system tasks, data, measures...article 2014
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Verberne, S. (author), Sappelli, M. (author), Kraaij, W. (author)In this paper, we evaluate query term suggestion in the context of academic professional search. Our overall goal is to support scientists in their information seeking tasks. We set up an interactive search system in which terms are extracted from clicked documents and suggested to the user before every query specification step. We evaluated our...bookPart 2014
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Sappelli, M. (author), Verberne, S. (author), Koldijk, S.J. (author), Kraaij, W. (author)We collected human - computer interaction data (keystrokes, active applications, typed text, etc.) from knowledge workers in the context of writing reports and preparing presentations. This has resulted in an interesting dataset that can be used for different types of information retrieval and information seeking research. The details of the...conference paper 2014
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Koldijk, S.J. (author), Koot, G. (author), Neerincx, M.A. (author), Kraaij, W. (author)Context-aware systems (CAS) that collect personal information are a general trend. This leads to several privacy considerations, which we outline in this paper. We present as use-case the SWELL system, which collects information from various contextual sensors to provide support for well-being at work. We address privacy from two perspectives: 1...bookPart 2014
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Sappelli, M. (author), Verberne, S. (author), Kraaij, W. (author)Automatic e-mail categorization with traditional classification methods requires labelling of training data. In a real-life setting, this labelling disturbs the working flow of the user. We argue that it might be helpful to use documents, which are generally well-structured in directories on the file system, as training data for supervised e...conference paper 2014
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Koldijk, S.J. (author), Sappelli, M. (author), Verberne, S. (author), Neerincx, M.A. (author), Kraaij, W. (author)This paper describes the new multimodal SWELL knowl- edge work (SWELL-KW) dataset for research on stress and user modeling. The dataset was collected in an experiment, in which 25 people performed typical knowledge work (writing reports, making presentations, reading e-mail, searching for information). We manipulated their working conditions...conference paper 2014
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Kraaij, W. (author), Over, P. (author)[No abstract available]conference paper 2014
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Ngo, C.W. (author), Lu, Y.J. (author), Zhang, H. (author), Yao, T. (author), Tan, C.C. (author), Pang, L. (author), de Boer, M.H.T. (author), Schavemaker, J.G.M. (author), Schutte, K. (author), Kraaij, W. (author)This paper presents an overview and comparative analysis of our systems designed for TRECVID 2014 [1] multimedia event detection (MED) and recounting (MER) tasks, including all sub-tasks for Pre-Specified (PS) event detection, all sub-tasks except 100Ex for Ad-Hoc (AH) event detection, and 010Ex sub-task for both PS and AH event recounting....conference paper 2014
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- Koldijk, S.J. (author), Neerincx, M.A. (author), Kraaij, W. (author) conference paper 2014
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Over, P. (author), Smeaton, A. (author), Awad, G. (author), Kraaij, W. (author), Ellis, A. (author), Dimmick, D. (author), Quénot, G. (author), Fiscus, J. (author), Strassel, S. (author), Shah, M. (author), Joy, D. (author), Li, X. (author), Place, C. (author), Sanders, G. (author), LaPrarie, T. (author), Michel, M. (author)[No abstract available]public lecture 2014
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- Over, P. (author), Awad, G. (author), Michel, M. (author), Fiscus, J. (author), Sanders, G. (author), Kraaij, W. (author), Smeaton, A.F. (author), Quénot, G. (author) conference paper 2014
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- Over, P. (author), Awad, G. (author), Kraaij, W. (author), Smeaton, A.F. (author) conference paper 2014
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Verberne, S. (author), van der Heijden, M. (author), Hinne, M. (author), Sappelli, M. (author), Koldijk, S. (author), Hoenkamp, E. (author), Kraaij, W. (author)In most intent recognition studies, annotations of query intent are created post hoc by external assessors who are not the searchers themselves. It is important for the field to get a better understanding of the quality of this process as an approximation for determining the searcher's actual intent. Some studies have investigated the...article 2013
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Sappelli, M. (author), Verberne, S. (author), Kraaij, W. (author)In this work, we present a binary classification problem in which we aim to identify those email messages that the receiver will reply to. The future goal is to develop a tool that informs a knowledge worker which emails are likely to need a reply. The Enron corpus was used to extract training examples. We analysed the word n-grams that...conference paper 2013
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Amardeilh, F. (author), Kraaij, W. (author), Spitters, M.M. (author), Versloot, C.A. (author), Yurtsever, S. (author)Domain ontologies are a central component in the Virtuoso demonstrator, a system that captures, analyzes and aggregates open news sources in order to achieve an information position that supports complex decision processes in the context of border control. However, maintenance of such an ontology is a challenging task. We demonstrate a text...conference paper 2013
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Ngo, C.W. (author), Xu, C. (author), Kraaij, W. (author), El Saddik, A. (author)As the bandwidth accessible to average users has increased, audiovisual material has become the fastest growing datatype on the Internet. The impressive growth of the social Web, where users can exchange user-generated content, contributes to the overwhelming number of multimedia files available. Among these huge volumes of data, a large numbers...article 2013
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van Rest, J.H.C. (author), Grootjen, F.A. (author), Grootjen, M. (author), Wijn, R. (author), Aarts, O.A.J. (author), Roelofs, M.L. (author), Burghouts, G.J. (author), Bouma, H. (author), Alic, L. (author), Kraaij, W. (author)Surveillance for security requires communication between systems and humans, involves behavioural and multimedia research, and demands an objective benchmarking for the performance of system components.Metadata representation schemes are extremely important to facilitate (system) interoperability and to define ground truth annotations for...article 2013
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Sappelli, M. (author), Kraaij, W. (author), Verberne, S. (author)The purpose of the Contextual Suggestion track, an evaluation task at the TREC 2012 conference, is to suggest personalized tourist activities to an individual, given a certain location and time. In our content-based approach, we collected initial recommendations using the location context as search query in Google Places. We first ranked the...conference paper 2013
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Verberne, S. (author), Sappelli, M. (author), Sørensen, D.R. (author), Kraaij, W. (author)In this paper, we investigated how academic search can profit from personalization by incorporating query history and background knowledge in the ranking of the results. We implemented both techniques in a language modelling framework, using the Indri search engine. For our experiments, we used the iSearch data collection, a large corpus of...conference paper 2013
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Sappelli, M. (author), Verberne, S. (author), Kraaij, W. (author)The purpose of the Contextual Suggestion track is to suggest personalized touristic activities to an individual, given a certain location and time. In our approach, we collected initial recommendations by using the location context as search query in Google Places. We first ranked the recommendations based on their textual similarity to the user...conference paper 2013