Esfinge at CLEF 2007: First Steps in a Multiple Question and Multiple Answer Approach
نویسندگان
چکیده
Use of the Web brought 32% (8/25) increase in performance Experiments Coping with five kinds of anaphoric expressions (see paper) Invoking PALAVRAS, a broad-coverage parser for Portuguese [Bick 2000] Dealing with sentence arguments (object, subject, etc.) as candidates Shallow reference resolution algorithm: 71% accuracy in general (over 122 questions) Producing several questions from the original one As a by-product, producing “syntactically-based patterns” as an alternative to regular expression reformulation of Esfinge Example (3 questions out of 1): Contra quem é que Steffi Graaf não jogou nas semi-finais de Roland Garros? Contra quem é que o pai de Steffi Graaf não jogou nas semi-finais de Roland Garros? Contra quem é que ela não jogou nas semi-finais de Roland Garros?
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