4 papers · 1 filter
Looking Under the Hood : Tools for Diagnosing your Question Answering Engine
Eric Breck, Marc Light, Gideon S. Mann +4
In this paper we analyze two question answering tasks : the TREC-8 question answering task and a set of reading comprehension exams. First, we show that Q/A systems perform better…
Using a Probabilistic Class-Based Lexicon for Lexical Ambiguity Resolution
Detlef Prescher, Stefan Riezler, Mats Rooth
This paper presents the use of probabilistic class-based lexica for disambiguation in target-word selection. Our method employs minimal but precise contextual information for disam…
Inside-Outside Estimation of a Lexicalized PCFG for German
Franz Beil, Glenn Carroll, Detlef Prescher +2
The paper describes an extensive experiment in inside-outside estimation of a lexicalized probabilistic context free grammar for German verb-final clauses. Grammar and formalism fe…
Inducing a Semantically Annotated Lexicon via EM-Based Clustering
Mats Rooth, Stefan Riezler, Detlef Prescher +2
We present a technique for automatic induction of slot annotations for subcategorization frames, based on induction of hidden classes in the EM framework of statistical estimation.…