Báo cáo khoa học: "Selecting Query Term Alterations for Web Search by Exploiting Query Contexts" pptx
Báo cáo khoa học: "Selecting Query Term Alterations for Web Search by Exploiting Query Contexts" pptx
... 148–155,
Columbus, Ohio, USA, June 2008.
c
2008 Association for Computational Linguistics
Selecting Query Term Alterations for Web Search by Exploiting Query
Contexts
Guihong Cao Stephen Robertson Jian-Yun ...
Abstract
Query expansion by word alterations (alterna-
tive forms of a word) is often used in Web
search to replace word stemming. This allows
users...
Tài liệu Báo cáo khoa học: "Trimming CFG Parse Trees for Sentence Compression Using Machine Learning Approaches" pptx
... all possible trees in a shared-forest
structure (Langkilde, 2000). The forest structure
is represented by an AND-OR tree, and it con-
tains many tree structures. The forest represen-
tation saves ... each terminal in the parse tree of the original
sentence is marked if it exists in the compressed
sentence. In the figure, the marked terminals are
represented by circles. Second, each non-ter...
Báo cáo khoa học: "Packing of Feature Structures for Efficient Unification of Disjunctive Feature Structures" pptx
... Intermediate data structure after unify-
ing A 1 with [~. Disjunction is expressed by non-
determinism when applying the dependency func-
tions. When we unify a feature structure segment
for ...
We therefore unify 5z with the feature structure
tagged as [~] in Figure 5.
Disjunction is expressed by non-determinism
when applying the dependency functions. Fig-
ure 7 shows the inter...
Báo cáo khoa học: Monitoring ligand-mediated nuclear receptor–coregulator interactions by noncovalent mass spectrometry pptx
... offers new possibilities for the study of such complexes,
providing direct e vidence for their f ormation and an
accurate determination of their binding stoichiometry. For
instance, in the field ... 1, v/v) acidified with 1%
(v/v) formic acid. The f ollowing molecular masses were
measured: 29 930 ± 1.8 Da for RARa;26735±2.3Da
for RXRa with deletion of the N-terminal methionine and
26...
Báo cáo khoa học: Submembraneous microtubule cytoskeleton: regulation of microtubule assembly by heterotrimeric G proteins pptx
... activated by
number of hormones, neurotransmitters and odorants
and are coded for by a family or almost 1000 genes in
humans. Similarly, several genes for G proteins exist
and these code for 20 ... G protein a subunits, which provide the
primary determinant for ‘information flow’ from the
activated GPCR are grouped into four families: Gs
(for stimulatory), which activates adenyly...
Báo cáo khoa học: "An Integrated Term-Based Corpus Query System" pptx
... most
important query types they are interested in.
2
More information on XQuery is available at
www.w3.org/TR/xquery/.
248
Generate Query
Save
Search!
-TRACT
(XQuery For Atroixt)
X- TRACT (XQuery for ... improved in
average by 2% (resulting in 98% for the top
ranked terms) by adding term variation
recognition.
4.3 Term clustering
A
cluster of terms is a group of related...
Tài liệu Báo cáo khoa học: "Automatically Generating Term-frequency-induced Taxonomies" doc
... interpret by humans.
We show that for certain domains, the frequency
with which terms appear in a corpus on their own
and in conjunction with other terms induces a nat-
ural taxonomy. We formally ... process.
3 Term- frequency-induced Taxonomies
For some application domains, a taxonomy is in-
duced by the frequency in which terms appear in a
corpus on their own and in combination wit...
Tài liệu Báo cáo khoa học: "Selecting the “Right” Number of Senses Based on Clustering Criterion Functions" pdf
... clustering solutions for all values of
k from 1 N , and then determines the mean and
standard deviation of the criterion function. Then,
a score is computed for each value of k by sub-
tracting the ... We present a methodol-
ogy that automatically selects an appropriate value
for k. Our strategy is to perform clustering for suc-
cessive values of k, and evaluate the resulting solu-...
Báo cáo khoa học: "Exploration of Term Dependence in Sentence Retrieval" pdf
... ap-
proaches realize it by referring to query expan-
sion or relevance feedback. Terms that are se-
mantically equivalent to the query terms or co-
occurred with the query terms frequently can be ... happen
among any set of query terms, hence the assump-
tion of dependence occurring among any query
terms is considered more reasonable.
The dependences among all query terms wil...
Báo cáo khoa học: Selecting cells with different Alzheimer’s disease c-secretase activity using FACS Differential effect of presenilin exon 9 deletion on c- and e-cleavage doc
... incubation for 72 h in the presence
of inhibitors, the cells were analyzed by FACS for GFP
expression. Propidium iodide staining was used to gate for
live cells. In each sample we gated for the ... and 12 from pCDNA3.1/PS1 DE9 with an
N-terminal flag sequence (kindly provided by F. Reinhard)
and was cloned into pIRESpuro2. We thereby removed the
N-terminal flag sequence. The last th...
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