model of information retrieval system
Báo cáo khoa học: "Optimizing Language Model Information Retrieval System with Expectation Maximization Algorithm" doc
Ngày tải lên :
08/03/2014, 01:20
... Relating the new lan-
guage models of information retrieval to the tradi-
tional retrieval models: University of Twente
[Host]; University of Twente, Centre for Telemat-
ics and Information Technology, ...
basis of research into Information Retrieval (IR).
The pioneers in IR developed two models for
ranking: the vector space model (G. Salton and
M. J. McGill, 1986) and the probabilistic model ... output distribution of the state.
Figure 1. HMM proposed in “A Hidden Markov
Model Information Retrieval System
To estimate the transition and observation
probabilities of HMM, EM algorithm...
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Tài liệu Báo cáo khoa học: "A study of Information Retrieval weighting schemes for sentiment analysis" doc
Ngày tải lên :
20/02/2014, 04:20
... provides information about the gen-
eral distribution of term i amongst documents of
all classes, without providing any additional evi-
dence of class preference. The utilization of idf
in information ... docu-
ments of only one or the other class and therefore
df
i,j
= 0 .
3.3 SMART and BM25 tf.idf variants
The SMART retrieval system by Salton (1971) is
a retrieval system based on the vector space model
(Salton ... al., 1996) is a probabilistic
model for information retrieval and is one of the
most popular and effective algorithms used in in-
formation retrieval. For ease of reference, we in-
corporate...
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Báo cáo khoa học: "Creative Language Retrieval: A Robust Hybrid of Information Retrieval and Linguistic Creativity" pot
Ngày tải lên :
07/03/2014, 22:20
... also contain the seeds of this
creative language. Veale (2004) introduces the idea
of creative information retrieval to explore how an
IR system can itself provide a degree of creative
anticipation, ... introduced the notion of an ad-
hoc category, a cross-cutting collection of often
disparate elements that cohere in the context of a
specific task or goal. The ad-hoc nature of these
categories ... useful
combinations of ?, @ and ^ are described below:
?? Neighbor -of- a-neighbor: if ?X matches any
element of {X, X
1
, X
2
, …, X
n
} then ??X matches
any of ?X ∪ ?X
1
∪ … ∪ ?X
n
, where the ranking
of X
ij
...
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Báo cáo khoa học: "The Role of Information Retrieval in Answering Complex Questions" ppt
Ngày tải lên :
08/03/2014, 02:21
... Agency.
3 Document Retrieval
Since information retrieval systems supply the ini-
tial set of documents on which a question answer-
ing system operates, it makes sense to optimize
document retrieval performance ... Linguistics
The Role of Information Retrieval in Answering Complex Questions
Jimmy Lin
College of Information Studies
Department of Computer Science
Institute for Advanced Computer Studies
University of Maryland
College ... does not occupy a
privileged position in the space of information ob-
jects as the most ideal unit of retrieval. Indeed, for
certain types of information needs, sub-document
segments are preferred—an...
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Towards a Model of Information Aesthetics in Information Visualization pdf
Ngày tải lên :
23/03/2014, 13:20
...
influences, information visualization can allow for high-
level interpretations of ever-more complex datasets.
3
3. Model of Information Aesthetics
3.1. Domain Model
The unique characteristics of information ... proposes a model of information aesthetics
in the context of information visualization. It addresses the
need to acknowledge a recently emerging number of
visualization projects that combine information ... the collective purpose
of these two fields, an expanded model is required to
describe its influencing factors.
3.2. Information Aesthetics Model
The proposed model of information aesthetics...
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Báo cáo khoa học: "natural language information retrieval system DIALOG" potx
Ngày tải lên :
24/03/2014, 05:21
...
Institute of Informatics
PKIN, pok.850
00-901 Warszawa
POLAND
~BSTRAe~
Presented paper contains a descrip-
tion of an experimental version of the
natural language information retrieval
system ... DIALOG. The system is destined
for the use in the field of medicine.
Its main purpose is to ensure access to
information to phlsiclans in a conver-
sational manner. The use of the system
does ...
does not require ability of programming
from its user.
I Introduction
The paper presents the state of
elaboration of the natural language in-
formation retrieval system DIALOG. Its
aim is...
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Báo cáo khoa học: "Adaptation of Statistical Machine Translation Model for Cross-Lingual Information Retrieval in a Service Context" ppt
Ngày tải lên :
24/03/2014, 03:20
... met-
ric in information retrieval. We’ll address the is-
sue of the correlation between BLEU and MAP in
Section 4.
Both of the proposed approaches rely on the
phrase-based SMT (PBMT) model (Koehn ... the PBMT model by
tuning the model s weights on a parallel set of
queries. This approach addresses the first as-
pect of the problem, which is producing a “good”
translation. The PBMT model combines ... types of features via a log-linear model. The
standard features include (Koehn, 2010, Chapter
5): language model, word penalty, distortion, dif-
ferent translation models, etc. The weights of
these...
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Developement of Multi-Agent system (MAS) model for Bac Lieu case study
Ngày tải lên :
16/10/2013, 01:15
...
given needs the model helps the management of different sluices. The main
potential input of multi-agent modelling is the representation of decision-
making process. The bio-physical model does not ... related to the objective of the model. Some are related to the
knowledge we introduced in the model.
Some questions are related to the purpose and the use of the model. For
instance, the ... the ability to recognize points of
intervention and to construct a bank of options for resource management”.
The role of modeling is formulated in this context: “Modeling proceeds
iteratively...
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Tài liệu Báo cáo khoa học: "Kinds of Features for Chinese Opinionated Information Retrieval" pdf
Ngày tải lên :
20/02/2014, 12:20
... paper presents the results of experi-
ments in which we tested different kinds of
features for retrieval of Chinese opinionated
texts. We assume that the task of retrieval of
opinionated texts (OIR) ... of
Opinionated Information Retrieval which is planned
to be a module in a Cross-Language Opinion Extrac-
tion system (CLOE). The main goal of this system is
to provide access to opinionated information ... the information
retrieval (IR) paradigm which has also been used by
some researchers.
Several sentiment information retrieval models
were proposed in the framework of probabilistic lan-
guage models...
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Tài liệu Báo cáo khoa học: "REPRESENTATION OF TEXTS FOR INFORMATION RETRIEVAL" pdf
Ngày tải lên :
21/02/2014, 20:20
... volume
constraints typical of DR systems. The modi~,cations
are designed to recognize such aspects of discourse
structure as establishment of topic; "setting of context;
summarizing; concept ... alternative systems for each of the pro-
posed modifications. In this experiment the original
corpus of thirty abstracts (but not the prublem state-
ments) is submitted to all versions of the analysis ... 1979.
Representation and classification of knowledge and
information for use in interactive information re-
trieval. In Human Aspects of Information Science.
Oslo: Norwegian Library School.
148...
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Báo cáo khoa học: "Examining the Content Load of Part of Speech Blocks for Information Retrieval" pptx
Ngày tải lên :
08/03/2014, 02:21
... out-
comes confirm that our hypotheses hold in
the context of Information Retrieval.
1 Introduction
The task of an Information Retrieval (IR) system
is to retrieve documents from a collection, in ... Computational Linguistics
Examining the Content Load of Part of Speech Blocks for Information
Retrieval
Christina Lioma
Department of Computing Science
University of Glasgow
17 Lilybank Gardens
Scotland, ... resources
for information retrieval tasks. Natural language in-
formation retrieval. Kluwer Academic Publishers
Dordrecht, NL.
Bruce Croft and John Lafferty. 2003. Language Mod-
eling for Information Retrieval. ...
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Báo cáo khoa học: "The Effect of Translation Quality in MT-Based Cross-Language Information Retrieval" pptx
Ngày tải lên :
17/03/2014, 04:20
... ECMT System
The MT system used in this research is a rule-
based ECMT system. The translation quality of
this ECMT system is comparable to the best
commercial ECMT systems. The basis of the
system ... more and more MT systems are be-
ing used in CLIR, it is of significance to care-
fully analyze how the performance of MT system
may influence the retrieval effectiveness.
3 System Description ... Zhang, and Ming
Zhou. 2000. On the Use of Words and N-grams for
Chinese Information Retrieval. In Proc. of the Fifth
International Workshop on Information Retrieval
with Asian Languages (IRAL-2000),...
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Guide for Security-Focused Configuration Management of Information Systems potx
Ngày tải lên :
23/03/2014, 23:21
... System
IS Information System
ISA Information System Administrator
ISC Information System Component
ISO International Organization for Standardization
ISO Information System Owner
ISSO Information ... designated by the ISO) at the
system level.
Information System Security Officer (ISSO)
The ISSO assists the information system owner with implementation of SecCM for the system,
conducts configuration ... completed at the system level and typically covers the following
topics:
• Brief description of the subject information system;
• Information system component inventory;
• Information system configuration...
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Báo cáo khoa học: "What’s There to Talk About? A Multi-Modal Model of Referring Behavior in the Presence of Shared Visual Information" potx
Ngày tải lên :
24/03/2014, 03:20
... use of various
forms of shared visual information in their every-
day communication.
The development of an integrated multi-modal
model of referring behavior can improve the per-
formance of ...
evidence of a difference between the perform-
ance of the visual-only model on the visual task
conditions and the language-only model on the
12
What’s There to Talk About?
A Multi-Modal Model of ...
variety of contexts that include visual objects of
interest. Such systems may benefit from a data-
driven model of how collaborative pairs adapt
their language in the presence (or absence) of
shared...
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