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courses:rg:2011-report-parser [2012/09/27 10:14] ufal |
courses:rg:2011-report-parser [2012/09/27 11:15] ufal |
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* 1.3% of arcs are non-projective (out of 8.1% of all non-projective arcs) because of the following conversion (agreement can be a motivation for this, i.e. in Czech): | * 1.3% of arcs are non-projective (out of 8.1% of all non-projective arcs) because of the following conversion (agreement can be a motivation for this, i.e. in Czech): | ||
{{: | {{: | ||
+ | | ||
+ | ==== Parser ==== | ||
+ | |||
+ | * we illustrated a step of the parser: | ||
+ | {{: | ||
+ | * we compared time complexity of this system with other commonly used ones | ||
+ | |||
+ | | MST parser | < | ||
+ | | MALT parser | < | ||
+ | | this parser | < | ||
+ | | this parser - non-projective | < | ||
+ | |||
+ | * implemented by a heap, it can reach < | ||
+ | * Algorithm1 | ||
+ | * we weren' | ||
+ | * it again confirms that pseudocode is usually more confusing than a normal code or verbal explanation | ||
+ | * " | ||
+ | {{: | ||
+ | |||
+ | ==== Features ==== | ||
+ | * Brown et al. clusters - they are surprisingly used rarely | ||
+ | ==== Features ==== | ||
+ | * not much discussed in the paper | ||
+ | ==== Evaluation ==== | ||
+ | * they make the same transformation as they did in Section 2 | ||
+ | ==== Shallow semantic annotation ==== | ||
+ | * 4 optional modules | ||
+ | * preposition sense disambiguation | ||
+ | * noun compound interpretation | ||
+ | * possesives interpretation | ||
+ | * PropBank semantic role labelling | ||
+ | * (Hajič et al., 2009) is not in the list of references | ||
+ | ===== Conclusion ===== | ||
+ | * non-directional easy-first parsing | ||
+ | * new features - Brown et al. clusters | ||
+ | * fast and accurate | ||
+ | * modified Penn converter | ||
+ | * changes in 9.500 POS tags | ||
+ | * labels copula, coordination | ||
+ | * semantic info |