NICTA I2D2 Group at GeoCLEF 2006

We report on the experiments undertaken by the NICTA I2D2 Group as part of GeoCLEF 2006, as well as post-GeoCLEF evaluations and improvements to the submitted system. In particular, we used techniques to assign probabilistic likelihoods to geographic candidates for each identified geo-term, and a probabilistic IR engine. A normalisation process that adjusts term weights, so as to prevent expanded geo-terms from overwhelming non-geo terms, is shown to be crucial.

• Type: Conference
• Year: 2006
• Where: CLEF
• Authors: Yi Li, Nicola Stokes, Lawrence Cavedon, Alistair Moffat
• Keywords: CLEF 2006, Information Management, NICTA I2D2 Group, Probabilistic Ir Engine, Probabilistic Likelihoods