R. Brussee

Followers

Following

Co-authors

Public Views

César Lima

ISCTE - University Institute of Lisbon (ISCTE-IUL)

Hugo Selma Sánchez

Universidad de la República

Giridhara R Babu

Indian Institute of Public Health

Dr. Artur C Jaschke

ArtEZ Institute of the Arts

Evgenia Gkintoni

University of Patras

Amir Poreh

Cleveland State University

Marianna Mazza

Università Cattolica del Sacro Cuore (Catholic University of the Sacred Heart)

T. Nagle

North Carolina State University

Keith West

Johns Hopkins Bloomberg School of Public Health

Awash Teklehaimanot

Columbia University

Interests

Uploads

Papers by R. Brussee

Change and knowledge transfer in weblogs

Crowdsourcing. Classification, costs, benefits, and usage

by R. Brussee and D. Swart

Indoor positioning in peer-to-peer networks

by R. Brussee and Sandra (A.C.C.) van Wijk

2010 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC), 2010

Abstract We present two algorithms for indoor positioning in peer-to-peer networks. The setup is ... more Abstract We present two algorithms for indoor positioning in peer-to-peer networks. The setup is a network of two types of devices: reference devices with a known location, and user devices that can determine distances to reference devices and each other. We present two algorithms for positioning estimation in such a peer-to-peer network. The first one is purely geometric and reduces determining the best estimate for the position of a device to a least squares problem. The second approach can be considered as a probabilistic version of ...

Download

Instanced-Based Mapping between Thesauri and Folksonomies

Lecture Notes in Computer Science, 2008

The emergence of web based systems in which users can annotate items, raises the question of the ... more The emergence of web based systems in which users can annotate items, raises the question of the semantic interoperability between vocabularies originating from collaborative annotation processes, often called folksonomies, and keywords assigned in a more traditional way. If collections are annotated according to two systems, e.g. with tags and keywords, the annotated data can be used for instance based mapping

Keyword Extraction Using Word Co-occurrence

2010 Workshops on Database and Expert Systems Applications, 2010

A common strategy to assign keywords to documents is to select the most appropriate words from th... more A common strategy to assign keywords to documents is to select the most appropriate words from the document text. One of the most important criteria for a word to be selected as keyword is its relevance for the text. The tf.idf score of a term is a widely used relevance measure. While easy to compute and giving quite satisfactory results, this measure does not take (semantic) relations between words into account. In this paper we study some alternative relevance measures that do use relations between words. They are computed by defining co-occurrence distributions for words and comparing these distributions with the document and the corpus distribution. We then evaluate keyword extraction algorithms defined by selecting different relevance measures. For two corpora of abstracts with manually assigned keywords, we compare manually extracted keywords with different automatically extracted ones. The results show that using word co-occurrence information can improve precision and recall over tf.idf.

Download

EDUCATING MANAGERS, MANAGING EDUCATION

by R. Brussee and Ingrid Mulder

Shared conceptualisations in weblogs

In this paper we investigate how conceptualisations can be identified in weblogs using language t... more In this paper we investigate how conceptualisations can be identified in weblogs using language technology (automated text analysis). We focus on getting a handle on both the concepts bloggers use and the way they think these concepts are related. The analysis of these conceptualisations can then be applied to a single weblog, resulting in a visualisation of potential conceptualisations the blogger wants to share with the outside world. Another type of analysis is to determine the overlap, or sharedness, of conceptualisations between bloggers. We have implemented both analysis approaches in an interactive tool.

Download

Automatic Thesaurus Generation using Co-occurrence

This paper proposes a characterization of useful thesaurus terms by the informativity of cooccure... more This paper proposes a characterization of useful thesaurus terms by the informativity of cooccurence with that term. Given a corpus of documents, informativity is formalized as the information gain of the weighted average term distribution of all documents containing that term. While the resulting algorithm for thesaurus generation is unsupervised, we find that high informativity terms correspond to large and coherent subsets of documents. We evaluate our method on a set of Dutch Wikipedia articles by comparing high informativity terms with keywords for the Wikipedia category of the articles.

Download

Integrated Health Log: Share Multimedia Patient Data

by R. Brussee and H. Bloo

2005 IEEE International Conference on Multimedia and Expo, 2005

The Integrated Health Log demonstrator shows how multimedia can be used in collaborative settings... more The Integrated Health Log demonstrator shows how multimedia can be used in collaborative settings in healthcare. Patient data can be shared annotated discussed and processed by medics involved with a patient. Special emphasis is put on protecting the privacy of patients and allowing medics to keep responsibility for their patient data. In particular, grid technology is used to decouple services and service providers so that services can be executed under the control of the data owner. The system will be piloted in a gait analysis laboratory and in a network of physiotherapists involved in treating children with movement disorders.

Download

Change and knowledge transfer in weblogs

Crowdsourcing. Classification, costs, benefits, and usage

by R. Brussee and D. Swart

Indoor positioning in peer-to-peer networks

by R. Brussee and Sandra (A.C.C.) van Wijk

2010 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC), 2010

Download

Instanced-Based Mapping between Thesauri and Folksonomies

Lecture Notes in Computer Science, 2008