information retrieval web search engines
Web mining in Thematic Search Engines
Ngày tải lên :
26/04/2013, 10:08
... xét đặc điểm vừa phải mà nó không đặc biệt liên
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Web mining in Thematic Search Engines
I.Giới thiệu
Gần đây sự cải tiến của công nghệ Search engine có thế tạo cho
người sử dụng Internet một ... thuật tối ưu hoá, mà thường được gọi là Web mining
(khai phá dữ liệu Web) . Ở đây, chúng ta mô tả phương thức cải tiến cho kết
quả tìm kiếm chuẩn trong Search engine, ở tài liệu và trang có giá ... nhiều
đường khác nhau. Hiện nay phần lớn mọi người dùng Search engine cung
cấp khả năng tìm kiếm trên cơ sở dữ liệu của hàng tỉ trang Web, nơi mà
những câu truy vấn được thực hiện ngay tức khắc....
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Tài liệu The Anatomy of a Large-Scale Hypertextual Web Search Engine ppt
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24/01/2014, 20:20
... Lexicon
engines.
1.1 Web Search Engines Scaling Up: 1994 - 2000
Search engine technology has had to scale dramatically to keep up with the growth of the web. In 1994,
one of the first web search engines, ... large-scale search engines on the web,
very little academic research has been done on them. Furthermore, due to rapid advance in
technology and web proliferation, creating a web search engine ... repository.
3 Related Work
Search research on the web has a short and concise history. The World Wide Web Worm (WWWW)
[McBryan 94] was one of the first web search engines. It was subsequently...
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Nghiên cứu phương pháp mở rộng truy vấn trong truy xuất thông tin (INFORMATION RETRIEVAL)
Ngày tải lên :
17/02/2014, 08:47
... trong truy xuất thông tin
1.1.1 Hệ thống truy xuất thông tin (Information Retrieval- IR)
Hệ thống Truy xuất thông tin (Information Retrieval) là hệ thống thực hiện tìm
kiếm tài liệu (thường là ... without Information Retrieval,
IR
OB P
QEM
)
- Mô hình mở rộng truy vấn dựa trên ontology và kết hợp với hệ thống truy
xuất thông tin (Query Expansion Model with Ontology-Based with
Information ...
thống truy xuất thông tin (Query Expansion Model with Ontology-Based and
Probability with Information Retrieval,
+IR
OB P
QEM
)
2.4.2.2 Các bước thực hiện mở rộng truy vấn dựa trên Ontology...
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Tài liệu Báo cáo khoa học: "Wikipedia as Sense Inventory to Improve Diversity in Web Search Results" doc
Ngày tải lên :
20/02/2014, 04:20
... Campaign: overview of the Web Peo-
ple Search Clustering Task. In 2nd Web People
Search Evaluation Workshop (WePS 2009), 18th
WWW Conference. 2009.
T. Brants and A. Franz. 2006. Web 1T 5-gram, version
1. ... con-
ference on Research and development in information
retrieval, pages 139–146. ACM.
C. Carpineto, S. Osinski, G. Romano, and Dawid
Weiss. 2009. A Survey of Web Clustering Engines.
ACM Computing ... 2009) for image search and (Ar-
tiles et al., 2009) for person name search. We see
our testbed as complementary to these ones, and
expect that it can contribute to foster research on
search results...
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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
... weighting
functions is a very active research area in infor-
mation retrieval and it is outside the scope of this
paper to provide an in-depth analysis but signifi-
cant research can be found in Salton ... classification in web
forums. ACM Trans. Inf. Syst., 26(3):1–34.
Timothy G. Armstrong, Alistair Moffat, William Web-
ber, and Justin Zobel. 2009. Improvements that
don’t add up: ad-hoc retrieval results ... weight-
ing approaches in automatic text retrieval. Technical
report, Ithaca, NY, USA.
Gerard Salton and Michael J. McGill. 1986. Intro-
duction to Modern Information Retrieval. McGraw-
Hill, Inc., New...
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Tài liệu Báo cáo khoa học: "A High-Accurate Chinese-English NE Backward Translation System Combining Both Lexical Information and Web Statistics" pdf
Ngày tải lên :
20/02/2014, 12:20
... is indispensable
in cross language information retrieval
nowadays. We propose an approach of
combining lexical information, web sta-
tistics, and inverse search based on
Google to backward ... translations in Chinese
web page snippets. We thus base our system on
web search engine: retrieving candidates from
returned snippets, combining both linguistic and
statistical information to find ...
NEs per user. These users are asked to simulate
a scenario of using web search machine to per-
form cross-lingual information retrieval. The
proportion of different types of NEs is roughly
conformed...
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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
... others), however, the re-
search described in this paper uses the information
retrieval (IR) paradigm which has also been used by
some researchers.
Several sentiment information retrieval models
were ... Ming
Zhou. 2000. On the use of words and n-grams
for Chinese information retrieval. In Proceedings of
the 5th International Workshop Information Retrieval
with Asian Languages, pages 141–148. ACM Press,
November.
Bo ... the
paper will consist of four main modules:
1. Query translation
2. Opinionated Information Retrieval
3. Opinionated Information Extraction
4. Results presentation
The OIR module will process complex...
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Tài liệu Báo cáo khoa học: "Bilingual Terminology Acquisition from Comparable Corpora and Phrasal Translation to Cross-Language Information Retrieval" pptx
Ngày tải lên :
20/02/2014, 16:20
... Corpora
to Cross-Language Information Retrieval: Hybrid
Statistics-based and Linguistics-based Approach. In
Proc. IRAL 2003, Sapporo, Japan.
G. Salton. 1971. The SMART Retrieval System, Experi-
ments ... 2001. Overview of the SecondNTCIR Work-
shop. In Proc. Second NTCIR Workshop on Research
in Chinese and Japanese Text Retrieval and Text Sum-
marization.
P. Koehn and K. Knight. 2002. Learning a Translation
Lexicon ... Uemura.
2002. Exploiting and Combining Multiple Resources
for Query Expansion in Cross-Language Information
Retrieval. IPSJ Transactions of Databases, TOD 15,
43(SIG 9):39–54.
F. Sadat, M. Yoshikawa...
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Tài liệu Báo cáo khoa học: "Summarization-based Query Expansion in Information Retrieval" doc
Ngày tải lên :
20/02/2014, 18:20
... from searching
all streams. This allows for an easy combination
of alternative retrieval methods, creating a meta-
search strategy which maximizes the contribution of
each stream. Different information ... "Natural Language Information
Retrieval: TREC°5 Report." Proceedings of TREC-5 confer°
ence.
Strzalkowski, Tomek. 1995. "Natural Language Information Re-
trieval" Information Processing ... of summa-
rization in context of an information retrieval sys-
tem, where the user needs to rapidly and efficiently
review the documents returned from search for an
indication of relevance...
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Tài liệu Báo cáo khoa học: "INFORMATION RETRIEVAL USING ROBUST NATURAL LANGUAGE PROCESSING" docx
Ngày tải lên :
20/02/2014, 21:20
... content. For example, the pair
retrieve +information is extracted from any of the fol-
lowing fragments: information retrieval system;
retrieval of information from databases; and informa- ... Michael. 1991. " ;Retrieval Performance in
Ferret: A Conceptual Information Retrieval
System." Proceedings of ACM SIGIR-91, pp.
347-355.
Sager, Naomi. 1981. Natural Language Information
Processing. ... 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,...
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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
... 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: "Creative Language Retrieval: A Robust Hybrid of Information Retrieval and Linguistic Creativity" pot
Ngày tải lên :
07/03/2014, 22:20
... Relations. In the proc. of SIGIR 94, the
17th International Conference on Research and De-
velopment in Information Retrieval. Berlin: Springer-
Verlag, 61-69.
Voorhees, E. M. (1998). Using WordNet ... analysis. In Proc. of the
19
th
annual international ACM SIGIR conference on
Research and development in information retrieval.
287
Veale and Hao (2007) exploit the simile frame
“as X as Y” to harvest ... creative information retrieval to explore how an
IR system can itself provide a degree of creative
anticipation, acting as a mediator between the lit-
eral specification of a meaning and the retrieval...
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Báo cáo khoa học: "Semantic Tagging of Web Search Queries" ppt
Ngày tải lên :
08/03/2014, 00:20
... is a common behaviour in
web search queries as shown in figure (1). It
means that even ID rules are not powerful enough
to model the free-word-order nature of web
search queries. This leads ... 2005: 330-337.
Xue, GR, HJ Zeng, Z Chen, Y Yu, WY Ma, WS Xi,
WG Fan, (2004), Optimizing web search using web
click-through data, Proceedings of the thirteenth
ACM international conference.
... of web search queries.
The model’s power, however, comes at the cost
of increased time complexity, which is exponen-
tial in the length of the query. This, is less of an
issue for parsing web...
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Báo cáo khoa học: "Optimizing Language Model Information Retrieval System with Expectation Maximization Algorithm" doc
Ngày tải lên :
08/03/2014, 01:20
... trigram information into our training
procedure. Corpus information might be used in
more delicate way to improve the performance.
References
A. Berger and J. Lafferty, " ;Information retrieval ... 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, 2000. ... Croft, "A general language model
for information retrieval, " 1999, pp. 316-321.
G. Salton and M. J. McGill, Introduction to Modern
Information Retrieval: McGraw-Hill, Inc. New
York,...
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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 ... techniques introduced
in this paper are applicable to the different types
of information needs discussed above.
While information retrieval techniques form a
strong baseline for answering relationship ... deter-
mine the statistical significance of the results. This
test is commonly used in information retrieval
research because it makes minimal assumptions
about the underlying distribution of differences.
Significance...
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