CUNY-BLENDER TAC-KBP2012 Entity Linking System and Slot Filling Validation System

This year the CUNY-BLENDER team participated in the English Entity Linking and Slot Filling Validation tracks. for entity linking, we apply two new techniques, collaborative clustering and query reformulation. For answer validation, we use a logistic regression model trained on within-system and crosssystem features to re-rank the merged answer sets generated by individual systems. In this paper, we describe our approaches to each task in more detail, assess the impact of out techniques, and presents new directions for future work.