... Korea, 8-14 July 2012.
c
2012 Association for Computational Linguistics
Arabic Retrieval Revisited: Morphological Hole Filling
Kareem Darwish, Ahmed M. Ali
Qatar Computing Research Institute ...
kdarwish@qf.org.qa, amali@qf.org.qa
Abstract
Due to Arabic’s morphological complexity,
Arabic retrieval benefits greatly from
morphological analysis – particularly
stemming. Howe...
... Disambiguation Tasks for
Arabic
We define the task of morphological tagging
as choosing an inflectional morphological tag (in
this paper, the term morphological tagging” never
refers to derivational ... tags, it
is clear that morphological tagging cannot be con-
strued as a simple classification task. Haji
ˇ
c (2000)
is the first to use a dictionary as a source of possible
morphological...
... important issue in using morphological an-
alyzers for morphological disambiguation is what
happens to unanalyzed words, i.e., words that re-
ceive no analysis from the morphological analyzer.
These ... accuracy rates on all tasks in the
high nineties.
1 Introduction
Arabic is a morphologically complex language.
1
The morphological analysis of a word consists of
determining the values...
... to as 'conceptual
retrieval& apos;. The conceptual retrieval systems, though
quite effective, are not yet mature enough to be con-
sidered in serious information retrieval applications, ... document retrieval is concerned.
Techniques involving various forms of relevance feedback are usu-
ally far more effective, but they require user's manual intervention
in the retriev...
... sentence in form of
a dependency tree. The node set consists of all the
tokens determined after morphological analysis of
the text, and the sentence root node. The descrip-
tion recovers the relation
... [Mechanical Translation and Computational Linguistics, vol.9, no.1, March 1966]
A Procedure for Morphological Encoding
by P. H. Matthews, Department of Linguistic Science, University of Reading, ... categories TENSE
a
[Future and non-Future] and
TENSE
b
[Past and non-
Past] are postulated on morphological grounds: this
proposal is tentative but may well have syntactic and
seman...
... establishes the accurate and effi-
cient retrieval of relational concepts. This
framework was applied to a text retrieval
system for MEDLINE. Experiments on
the retrieval of biomedical correlations ... for real-time in-
teractive text retrieval systems, and accuracy is key
for the motivation of semantic retrieval. That is,
our motivation for employing semantic retrieval
1021
Query N...
... im-
provements to be gained from morphological pre-
processing? 2) Must the morphological system be
perfect or can performance improvements also be
reached with relatively simple morphological com-
ponents? ... to
be expected from explicit morphological informa-
tion depend on the g2p algorithm? To determine
these factors, we compared morphological segmen-
tations based on manual m...
...
improve this situation with the development of a
new version of our morphological analyzer
Morphy.
In addition to the morphological analyzer,
Morphy includes a statistical part-of-speech ... of full
forms together with their morphological de-
scriptions in text format.
1 The Morphology System
Since German is a highly inflectional language,
the morphological algorithms used i...