IWIS: Intelligent Web and Information Systems -

Felipe Costa

Peter Dolog — Fri, 30 Sep 2016 12:21:06 +0000

Nattiya Kanhabua

Peter Dolog — Fri, 30 Sep 2016 12:20:12 +0000

I am an assistant professor at the Department of Computer Science, Aalborg University, Denmark. Previously, I was a postdoctoral researcher at the L3S Research Center under a supervision of Prof. Wolfgang Nejdl. My research interests are information retrieval, Web and social media mining, and Web archiving. In particular, I focus on the impacts of Web dynamics on search, e.g., terminology evolution, time-sensitive queries, and time-aware retrieval and ranking. At L3S, I was a work package leader of the EU-funded project ForgetIT. The goal is to develop approaches and technologies for intelligent preservation management, which keep the archived information concise, relevant and digestible by managed forgetting and contextualized remembering. I was also a member of ALEXANDRIA, an ERC Advanced Grant Project on Foundations for Temporal Retrieval, Exploration and Analytics in Web Archives. The ALEXANDRIA project aims to develop models, tools and techniques necessary to archive and index relevant parts of the Web, and to retrieve and explore this information in a meaningful way. In addition, I am interested in health-related search and analytics, e.g., early outbreak detection in social Web data such as Twitter messages. This work on medicine and healthcare applications is a part of the finished EU project Medical Ecosystem: Personalized Event-based Surveillance (M-Eco).

My PhD work was conducted under a supervision of Prof. Kjetil Nørvåg at the Data and Information Management research group, Dept. of Computer and Information Science, Norwegian University of Science and Technology (NTNU). The PhD study is a formal part of LongRec - Records Management over Decades. LongRec was a research project on persistent, reliable and trustworthy long-term archival of digital documents, with emphasis on the availability and use of documents. LongRec was initiated and coordinated by DNV, and performed in cooperation with NTNU, NR, and a number of business partners, with partial funding from the Norwegian Research Council.

PhD for Ricardo Lage

Peter Dolog — Fri, 20 Sep 2013 07:54:39 +0000

On September 4, 2013, Ricardo Gomes Lage defended his PhD thesis on Methods for the Automatic Publication of Messages on Social Network Services.

UMAP 2014 hosted by IWIS

Peter Dolog — Fri, 20 Sep 2013 07:51:42 +0000

IWIS proudly announces that it will host the 22nd edition of the International Conference on User Modeling, Adaptation, and Personalization in collaboration with Visit Aalborg. The conference will be held in Hotel Hvide Hus in Aalborg, Denmark in july 2014. More information can be found at http://um.org/umap2014. We are all looking forward to meet you there.

Dagstughl Seminar

Peter Dolog — Thu, 11 Apr 2013 08:21:50 +0000

Peter Dolog will participate in one of the prestiguos seminars organized at Dagstuhl Castles. The seminar topic is on customizing service platforms: http://www.dagstuhl.de/en/program/calendar/semhp/?semnr=13171. Such seminars are by invitation only where experts on topics of the seminars are participating, working and discussing on advancements in the area.

Master Thesis 2013/2014

Peter Dolog — Thu, 11 Apr 2013 08:16:31 +0000

Master thesis topics for 2013/2014 starting from september 2013 are:

- hidden communities and relevant content in web social networks

- transactional management in service oriented environment on the web

Bried descriptions for each can be found in attached documents.

ICWE 2013 hosted by IWIS

Peter Dolog — Wed, 14 Nov 2012 10:13:19 +0000

IWIS proudly announces that it will host the 13th edition of the International Conference on Web Engineering in collaboration with Visit Aalborg. The conference will be held in hotel Hvide Hus in Aalborg, Denmark in july 2013. More information can be found at http://icwe2013.webengineering.org. We are all looking forward to meet you there.

PhD for Frederico Araujo Durao

Peter Dolog — Fri, 17 Feb 2012 12:21:18 +0000

On February 13, 2012, Frederico Araujo Durao defended his PhD thesis on Exploiting Tag-Based Personalized for Recommendation on Social Web.

Gorka Puente Garcia, University of Basque Country, Spain

Peter Dolog — Thu, 26 Jan 2012 10:00:42 +0000

Some Highlights of the CIKM 2011 Conference

riclage — Tue, 08 Nov 2011 15:27:51 +0000

From October 24 to 28, I attended the 20th ACM Conference on Information and Knowledge Management (CIKM), in Glasgow, UK. The conference had a number of good papers in a wide range of topics, including information retrieval, social network analysis and machine learning. The conference also had two keynote speakers that talked about, respectively, improving user interfaces for better management of information, and addressing the challenges that persist in search, storage and analysis of biomedicine data.

I attended the first keynote, where David Karger, a professor from MIT, introduced some of the research outcomes of projects from the Haystack group. Results showed better user experiences in terms of visualization, organization and sharing of information. List.it, the first project presented, is micro-note tool that can be added to Firefox. It focuses on the simplicity of adding simple, free-text notes right inside the browser, where users have the context at hand. In interviews, users highlighted ease/speed of use (35%), simplicity (20%), and “direct replacement for paper post-it” (20%) as the main reasons for using the tool. Usage patterns were also investigated, categorizing users in four main groups according to how they kept their notes.

Other tools, such as nb, were also concerned with keeping the context at hand. nb is a collaborative annotation tool integrated to a PDF reader. Notes can make references to contents of the PDF file and shared among other users of a class or group discussion. Similarly, FeedMe allows users to share in context a web page they are looking at. It also has a personalization component that recommends other users that are more likely to be interested in that information. Other projects, such as Datapress, were also presented with results from experiments. These show better user experiences when the tools kept the context of the user work and provided a personalized experience. More information can be obtained and the slides of the keynote can be downloaded from the official web site.

From the sessions, many good papers were presented. I will highlight three here. “A Probabilistic Method for Inferring Preferences from Clicks” utilizes interleaved comparison methods in click data from links in documents to learn ranking functions online. The Best Paper Award winner “Intent-Aware Query Similarity” by Guo, Cheng, Xu and Zhu besides proposing an interesting new method of computing query similarity, has a comprehensive review of similarity measures. Another good paper from Microsoft Research, “Semi-supervised Learning to Rank with Preference Regularization”, proposes a semi-supervised learning to rank algorithm. It builds on the assumption that similar items have similar preferences in terms of ranking.

Finally, on the last day of the conference, I attended the Second International Workshop on Web Science and Information Exchange in the Medical Web (MedEX 2011). Presentations focused on works investigating different questions related to web science in medicine and healthcare. In the workshop I presented the paper “Applicability of Recommender Systems to Medical Surveillance Systems” containing preliminary results of applying recommendation techniques to users of health surveillance systems. More details of the workshop and the slides of the presentation can be obtained from the official web site.