automatically harvesting semantic relations
Báo cáo khoa học: "Espresso: Leveraging Generic Patterns for Automatically Harvesting Semantic Relations" docx
Ngày tải lên :
08/03/2014, 02:21
... Association for Computational Linguistics
Espresso: Leveraging Generic Patterns for
Automatically Harvesting Semantic Relations
Patrick Pantel
Information Sciences Institute
University of Southern ... auto-
matically harvesting shallow semantic resources.
With seemingly endless amounts of textual data
at our disposal, we have a tremendous opportu-
nity to automatically grow semantic term banks ... present Espresso, a
weakly-supervised, general-purpose,
and accurate algorithm for harvesting
semantic relations. The main contribu-
tions are: i) a method for exploiting ge-
neric patterns...
- 8
- 224
- 0
Tài liệu Báo cáo khoa học: "Ontologizing Semantic Relations" pdf
Ngày tải lên :
20/02/2014, 12:20
... syn-
sets) for terms in domain-specific verb relations.
These relations, such as (x,
EXPAND, y) are first
automatically learnt from a corpus. The semantic
classes of x and y are then inferred ... many algorithms for
harvesting semantic relations from corpora and
the Web. For the purposes of this paper, we may
choose any one of them and manually validate its
mined relations. We choose ... complex lexi-
cal structures like binary semantic relations, the
paper focused only on attaching terms.
Basili (2000) proposed an unsupervised
method to infer semantic classes (WordNet syn-
sets)...
- 8
- 353
- 0
Báo cáo khoa học: "Learning Arguments and Supertypes of Semantic Relations using Recursive Patterns" doc
Ngày tải lên :
07/03/2014, 22:20
... representation of semantic relations
using recursive lexico-syntactic patterns.
• An automatic procedure to learn the se-
lectional restrictions (arguments and super-
types) of semantic relations from ... ar-
guments and the supertypes of a diverse
set of semantic relations from the Web.
We evaluate the performance of our algo-
rithm on multiple semantic relations ex-
pressed using “verb”, “noun”, and ... in at-
tempts to harvest bits of semantic information, in-
cluding: semantic lexicons (Riloff and Shepherd,
1997), concept lists (Lin and Pantel, 2002), is-
a relations (Hearst, 1992; Etzioni...
- 10
- 363
- 0
Báo cáo khoa học: "Interpreting Semantic Relations in Noun Compounds via Verb Semantics" pdf
Ngày tải lên :
08/03/2014, 02:21
... sentences
with relations (see Section 6.2). Using this method
we can identify the matching relation forms of se-
mantic relations to decide the semantic relation for
NCs.
3 Semantic Relations in ... of semantic
relations.
Based on the pioneering work on Levi (1979)
and Finin (1980), there have been efforts in com-
putational linguistics to arrive at largely task-
specific sets of semantic relations, ... of semantic relations.
First we map verb tokens in sentential con-
texts to a fixed set of seed verbs using
WordNet::Similarity and Moby’s
Thesaurus. We then match the sentences
with semantic relations...
- 8
- 362
- 0
Báo cáo khoa học: "Sense Disambiguation Using Semantic Relations and Adjacency Information" docx
Ngày tải lên :
08/03/2014, 07:20
... particular semantic rela-
tion like hypernymy or purpose linking the two input
words, e.g., "return" is a hypernym of "forehand."
• Many heuristics look for particular semantic ...
and Retrieval with Semantic Background Knowl-
edge" Ph.D thesis, MIT Media Laboratory.
4. Chakravarthy, Anil S. and Haase, Kenneth B. 1995.
"NetSerf: Using Semantic Knowledge to ... Text Retrieval," in
Pro-
ceedings of SIGIR'93.
295
Sense Disambiguation Using Semantic
Relations and Adjacency Information
Anil S. Chakravarthy
MIT Media Laboratory
20 Ames Street...
- 3
- 297
- 0
Báo cáo khoa học: "Using lexical and relational similarity to classify semantic relations" pptx
Ngày tải lên :
08/03/2014, 21:20
... promising
direction is to investigate relational models for un-
supervised semantic analysis of noun compounds.
The range of semantic relations that can be ex-
pressed by compounds is the subject of some ... is
evidence that the same semantic relation tends to
hold between the members of each pair. A re-
lational distributional hypothesis therefore states
that two word pairs are semantically similar if ... including SAT verbal analogy tests,
synonym/antonym classification and distinction
between semantically similar and semantically as-
sociated words. Our future research plans include
investigating the...
- 9
- 416
- 0
Báo cáo khoa học: "Folheador: browsing through Portuguese semantic relations" pot
Ngày tải lên :
08/03/2014, 21:20
... LKBs, in addition to
information on words and semantic relations, it is
important that these interfaces provide usage ex-
amples where semantic relations hold, or at least
where related words ... aware that the proper interpretation of the
semantic relations may vary in the different re-
sources, even disregarding possible mistakes in
the automatic harvesting. It is enough to consider
the ... listing words but going deeper into mean-
ing, and listing semantic properties like word
senses or relationships between senses.
So, a list of relations among words can con-
flate a number of highly...
- 6
- 289
- 0
Báo cáo khoa học: "Extraction of Entailed Semantic Relations Through Syntax-based Comma Resolution" potx
Ngày tải lên :
17/03/2014, 02:20
... ex-
traction of semantic relations has not been
hitherto recognized. We introduce the prob-
lem of comma resolution, defined as under-
standing the role of commas and extracting the
relations they ... outlined
above explains the relations generated by a single
example. In addition to covering the relations gen-
erated by the example, we wish to ensure that it does
not cover erroneous relations by matching ... Pantel and M. Pennacchiotti. 2006. Espresso: Lever-
aging generic patterns for automatically harvesting se-
mantic relations. In Proc. of the Annual Meeting of the
ACL, pages 113–120.
M. Pasca,...
- 9
- 293
- 0
Báo cáo khoa học: "Learning Semantic Links from a Corpus of Parallel Temporal and Causal Relations" doc
Ngày tải lên :
08/03/2014, 01:20
... syntactic features from Section 4.
Semantic The semantic features from Section 4.
All Both syntactic and semantic features.
All+Tmp (Causals Only) Syntactic and semantic
features, plus the gold-standard ... of parallel
temporal and causal relations and exploring machine
learning approaches to extracting these relations.
2 Related Work
Much recent work on temporal relations revolved
around the TimeBank ... showed that temporal
relations between a verb and a complement clause
could be identified with accuracies of nearly 90%.
Recent work on causal relations has also found
that arbitrary relations in text...
- 4
- 363
- 0
Báo cáo khoa học: "Using WordNet to Automatically Deduce Relations between Words in Noun-Noun Compounds" docx
Ngày tải lên :
08/03/2014, 02:21
... colleagues pro-
vide a set of ‘thematic relations (derived from
relations proposed by, for example, Levi, 1978)
which, they argue, cover the majority of semantic
relations between modifier (first word) ... pairs
(sense pairs) and semantic relations, they differ in
that Rosario et al.’s algorithm uses a static list of
manually-defined rules linking category pairs and
semantic relations, while our PRO ... Shoben’s set.
These relations were therefore added to the list of
relations we used. Various other less commonly-
occuring relations were also observed. To allow
for these other relations, a function...
- 8
- 318
- 0
