Index
. (period), sentence segmentation markers, 30
“” (Quotation marks), sentence segmentation markers, 30
! (Exclamation point), as sentence segmentation marker, 30
? (Question mark), sentence segmentation markers, 30
80/20 rule (vital few), 14
a priori models, in document retrieval, 377
Abbreviations, punctuation marks in, 30
Absity parser, rule-based semantic parsing, 122
Abstracts
in automatic summarization, 397
defined, 400
Accumulative vector space model, for document retrieval, 374–375
Accuracy, in QA, 462
ACE. See Automatic content extraction (ACE)
Acquis corpus
for evaluating IR systems, 390
for machine translation, 358
Adequacy, of translation, 334
Adjunctive arguments, PropBank verb predicates, 119–120
AER (Alignment-error rate), ...
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