towards information retrieval measures for evaluation of web search engines
Báo cáo khoa học: "A Figure of Merit for the Evaluation of Web-Corpus Randomness" ppt
Ngày tải lên :
17/03/2014, 22:20
... similarity of collections of doc-
uments is closely related to the similarity of the
218
A Figure of Merit for the Evaluation of Web- Corpus Randomness
Massimiliano Ciaramita
Institute of Cognitive ... Terms from the Web. In Pro-
ceedings of LREC 2004, pages 1313–1316.
K. Bharat and A. Broder. 1998. A Technique for Mea-
suring the Relative Size and Overlap of the Public
Web Search Engines. In ... with query category y
s
.
These Web- corpora can be seen as a dataset D
of n = 20 data-points each consisting of a series
of unigram word distributions, one for each search
category. If all n data-points...
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Báo cáo toán học: " Population level risk assessment: practical considerations for evaluation of population models from a risk assessor''''s perspective" pdf
Ngày tải lên :
20/06/2014, 20:20
... freely for any purposes (see copyright notice below).
For information about publishing your research in Environmental Sciences Europe go to
http://www.enveurope.com/authors/instructions/
For information ... (e.g.
flowering fields)
Speed of detection of
resources
Number of nectar and
pollen foragers
Time and frequency of
foraging trips
Distribution of breeding
and foraging territories or
home ...
knowledge of the ecology of a species affects not only the realism of model simulations, but also
of higher tier risk assessments or the use of field studies in risk assessment. Therefore, for a...
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Báo cáo toán học: " Population level risk assessment: practical considerations for evaluation of population models from a risk assessor''''s perspective" docx
Ngày tải lên :
20/06/2014, 20:20
... (e.g.
flowering fields)
Speed of detection of
resources
Number of nectar and
pollen foragers
Time and frequency of
foraging trips
Distribution of breeding
and foraging territories or
home ... freely for any purposes (see copyright notice below).
For information about publishing your research in Environmental Sciences Europe go to
http://www.enveurope.com/authors/instructions/
For information ...
knowledge of the ecology of a species affects not only the realism of model simulations, but also
of higher tier risk assessments or the use of field studies in risk assessment. Therefore, for a...
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báo cáo hóa học:" Population level risk assessment: practical considerations for evaluation of population models from a risk assessor''''s perspective" doc
Ngày tải lên :
21/06/2014, 17:20
... (e.g.
flowering fields)
Speed of detection of
resources
Number of nectar and
pollen foragers
Time and frequency of
foraging trips
Distribution of breeding
and foraging territories or
home ... freely for any purposes (see copyright notice below).
For information about publishing your research in Environmental Sciences Europe go to
http://www.enveurope.com/authors/instructions/
For information ...
knowledge of the ecology of a species affects not only the realism of model simulations, but also
of higher tier risk assessments or the use of field studies in risk assessment. Therefore, for a...
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Báo cáo khoa học: "Semantic Tagging of Web Search Queries" ppt
Ngày tải lên :
08/03/2014, 00:20
... sequence of words. A web search
query, however, is often formulated by a user as a
bag of keywords. For example, if a user is look-
861
We mentioned that one of the motivations of
parsing search ... implementation of a
parser for this kind of grammar. Section 5 gives
an example of such a grammar designed for the
purpose of automatic tagging of queries. Section
6 discusses motivations for and ... Contextual information often plays a
big role in resolving tagging ambiguities and is
one of the key benefits of discriminative models
such as CRFs. But such information is not
straightforward...
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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
... 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 the ... 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 ... Pre-
vious research has shown that in general the per-
formance of the former tend to be superior to that
of the latter (Mullen and Collier, 2004; Lin and
He, 2009). One of the main issues for supervised
approaches...
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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
... the
found set of features for text classification (index-
ing) for an OIR query of the first level (finds opin-
ionated information) and for an OIR query of the
second level (finds opinionated information ... Association for Computational Linguistics
Kinds of Features for Chinese Opinionated Information Retrieval
Taras Zagibalov
Department of Informatics
University of Sussex
United Kingdom
T.Zagibalov@sussex.ac.uk
Abstract
This ... 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)...
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Tài liệu Báo cáo khoa học: "Methods for the Qualitative Evaluation of Lexical Association Measures" doc
Ngày tải lên :
20/02/2014, 18:20
... lack of significant
differences between the measures except for cer-
tain specific values of
. We have also shown that
the evaluation results and the ranking of AMs dif-
fer depending on the kind of ... data.
(2) The evaluation strategies applied: Instead
of examining only a small sample of
-best can-
didates for each measure as it is common practice,
we make use of recall and precision values for -
best ... for evaluation
General statistics for the AdjN and PNV base
sets are given in Table 1. Manual annotation was
performed for AdjN pairs with frequency
and PNV triples with only (see section
5 for...
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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 ...
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 foregrounding; ... 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...
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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
... 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. ... of Information Retrieval.
1 Introduction
The task of an Information Retrieval (IR) system
is to retrieve documents from a collection, in re-
sponse to a user need, which is expressed in the
form ... Blocks for Information
Retrieval
Christina Lioma
Department of Computing Science
University of Glasgow
17 Lilybank Gardens
Scotland, U.K.
xristina@dcs.gla.ac.uk
Iadh Ounis
Department of Computing...
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Báo cáo khoa học: "Towards Web-Based Evaluation of Automatic Natural Language Phrase Generation" potx
Ngày tải lên :
23/03/2014, 18:20
... Linguistics
Is It Correct? - Towards Web- Based Evaluation of Automatic Natural
Language Phrase Generation
Calkin S. Montero and Kenji Araki
Graduate School of Information Science and Technology, ... number of hits, returned by the search
engine for a given n-gram. Table 1 shows some
of the n-grams produced for the generated phrase
“what are your plans for the game?” The fre-
quency of each ... (2005),the size of indexable Web had become approx-
imately 11.5 billion pages
9
The tuning of the thresholds of each n-gram type was
preformed using the phrases of the Phrase DB
10
The evaluation...
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Tìm thêm:
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- xác định các mục tiêu của chương trình
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- khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản
- khảo sát chương trình đào tạo gắn với các giáo trình cụ thể
- xác định thời lượng học về mặt lí thuyết và thực tế
- tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam
- điều tra đối với đối tượng giảng viên và đối tượng quản lí
- điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1
- khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam
- khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu
- nội dung cụ thể cho từng kĩ năng ở từng cấp độ
- xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct
- phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ
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- mở máy động cơ rôto dây quấn
- các đặc tính của động cơ điện không đồng bộ
- hệ số công suất cosp fi p2
- đặc tuyến hiệu suất h fi p2