This paper presents the information retrieval system that integrates concept-based retrieval, which focuses on the similarity of the meanings of words, with the characterstring-matching-based retrieval. The system provides a word association function, a concept retrieval function, and a document classification function, which are expected to help the user to reach the target document quickly or...

This extended abstract describes the system proposed for MIREX (Music Information Retrieval Evaluation eXchange) 2009 in the Multiple Fundamental Frequency Estimation and Tracking contest. The system is based on a frame-by-frame analysis with a tracking mechanism as postprocessing. It is submitted for the first two sub-tasks: (1) frame-by-frame evaluation (2) note contour evaluation.

Passenger information aims at improving the user-friendliness of public transport systems while influencing passenger route choices to satisfy transit user’s travel requirements. The integration of transit information from multiple agencies is a major challenge in implementation of multi-modal passenger information systems. The problem of information sharing is further compounded by the multi-l...

ImageCLEFphoto 2008 is an ad-hoc photo retrieval task and part of the ImageCLEF evaluation campaign. This task provides both the resources and the framework necessary to perform comparative laboratory-style evaluation of visual information retrieval systems. In 2008, the evaluation task concentrated on promoting diversity within the top 20 results from a multilingual image collection. This new ...

In recent years, immense progress has been made in the development of recommendation, retrieval, and personalisation techniques. The evaluation of these systems is still based on traditional information retrieval and statistics metrics, e.g., precision, recall and/or RMSE, often not taking the use-case and situation of the actual system into consideration. However, the rapid evolution of recomm...