共查询到20条相似文献，搜索用时 453 毫秒
1.
Modeling context through domain ontologies 总被引：1，自引：0，他引：1
Nathalie Hernandez Josiane Mothe Claude Chrisment Daniel Egret 《Information Retrieval》2007,10(2):143-172
Traditional information retrieval systems aim at satisfying most users for most of their searches, leaving aside the context
in which the search takes place. We propose to model two main aspects of context: The themes of the user's information need
and the specific data the user is looking for to achieve the task that has motivated his search. Both aspects are modeled
by means of ontologies. Documents are semantically indexed according to the context representation and the user accesses information
by browsing the ontologies. The model has been applied to a case study that has shown the added value of such a semantic representation
of context.
相似文献
| Daniel EgretEmail: |
2.
Content-oriented XML retrieval approaches aim at a more focused retrieval strategy: Instead of retrieving whole documents, document components that are exhaustive to the information need while at the same time being as specific as possible should be retrieved. In this article, we show that the evaluation methods developed for standard retrieval must be modified in order to deal with the structure of XML documents. More precisely, the size and overlap of document components must be taken into account. For this purpose, we propose a new effectiveness metric based on the definition of a concept space defined upon the notions of exhaustiveness and specificity of a search result. We compare the results of this new metric by the results obtained with the official metric used in INEX, the evaluation initiative for content-oriented XML retrieval.
相似文献
| Gabriella KazaiEmail: |
3.
Jacob Soll 《Archival Science》2007,7(4):331-342
This article examines the archival methods developed by Colbert to train his son in state administration. Based on Colbert’s
correspondence with his son, it reveals the practices Colbert thought necessary to collect and manage information in his state
encyclopedic archive during the last half of the 17th century.
相似文献
| Jacob SollEmail: |
4.
5.
We present software that generates phrase-based concordances in real-time based on Internet searching. When a user enters
a string of words for which he wants to find concordances, the system sends this string as a query to a search engine and
obtains search results for the string. The concordances are extracted by performing statistical analysis on search results
and then fed back to the user. Unlike existing tools, this concordance consultation tool is language-independent, so concordances
can be obtained even in a language for which there are no well-established analytical methods. Our evaluation has revealed
that concordances can be obtained more effectively than by only using a search engine directly.
相似文献
| Yuichiro IshiiEmail: |
6.
To put an end to the large copyright trade deficit, both Chinese government agencies and publishing houses have been striving
for entering the international publication market. The article analyzes the background of the going-global strategy, and sums
up the performance of both Chinese administrations and publishers.
相似文献
| Qing Fang (Corresponding author)Email: |
7.
Andy Weissberg 《Publishing Research Quarterly》2008,24(4):255-260
This article analyzes current industry practices toward the identification of digital book content. It highlights key technology
trends, workflow considerations and supply chain behaviors, and examines the implications of these trends and behaviors on
the production, discoverability, purchasing and consumption of digital book products.
相似文献
| Andy WeissbergEmail: |
8.
This paper, based on PhD research, reflects upon the market for electronic books in the general trade sectors of UK and US
publishers during the early years of the 21st century. The paper reports on interviews carried out with publishers between
2003 and 2005, and reflects upon four areas which presented and still present challenges to the uptake of e-books—negative
perceptions from consumers; formats; pricing and issues regarding digital rights. The paper concludes that the development
and uptake of electronic books has some way to go in the general trade/mass-market sectors.
相似文献
| Cliff McKnightEmail: |
9.
Sandeep Chaufla 《Publishing Research Quarterly》2008,24(3):187-201
A review and analysis of the rules and regulations including the tax aspects of making an investment in India is presented.
The full range from Foreign Direct Investment to different forms of doing business with specific examples from the publishing
industry is explored to help understand current policies and regulations.
相似文献
| Sandeep ChauflaEmail: Email: |
10.
A summary overview of the children’s and young adult publishing industry in China with a focus on the size of the market,
ten major publishing houses, copyright and trends. Special emphasis has been placed on specific transaction for the sale of
translation rights from German language publishers to China and minimal activities of German rights sold to Chinese publishers.
相似文献
| Jing BartzEmail: |
11.
This article analyses the extent to which archival exemptions for historical, scientific and statistical research in privacy
legislation support preservation in selected European Union countries, and comparable aspects of Australian, American and
Canadian law within a legal, ethical and digital archival perspective. The authors recommend that the further processing of
personal data under data protection law be given a wider scope of interpretation for archival preservation purposes in both
the public and private sector, coupled with the use of researcher and archival codes in relation to access to personal data.
They also recommend early appraisal and integration of privacy with freedom of information and archival regimes.
相似文献
| Malcolm ToddEmail: |
12.
Andrew MacFarlane 《Information Retrieval》2009,12(2):162-178
Understanding of mathematics is needed to underpin the process of search, either explicitly with Exact Match (Boolean logic,
adjacency) or implicitly with Best match natural language search. In this paper we outline some pedagogical challenges in
teaching mathematics for information retrieval (IR) to postgraduate information science students. The aim is to take these
challenges either found by experience or in the literature, to identify both theoretical and practical ideas in order to improve
the delivery of the material and positively affect the learning of the target audience by using a tutorial style of teaching.
Results show that there is evidence to support the notion that a more pro-active style of teaching using tutorials yield benefits
both in terms of assessment results and student satisfaction.
相似文献
| Andrew MacFarlaneEmail: |
13.
Intelligent use of the many diverse forms of data available on the Internet requires new tools for managing and manipulating
heterogeneous forms of information. This paper uses WHIRL, an extension of relational databases that can manipulate textual
data using statistical similarity measures developed by the information retrieval community. We show that although WHIRL is
designed for more general similarity-based reasoning tasks, it is competitive with mature systems designed explicitly for
inductive classification. In particular, WHIRL is well suited for combining different sources of knowledge in the classification
process. We show on a diverse set of tasks that the use of appropriate sets of unlabeled background knowledge often decreases
error rates, particularly if the number of examples or the size of the strings in the training set is small. This is especially
useful when labeling text is a labor-intensive job and when there is a large amount of information available about a particular
problem on the World Wide Web.
相似文献
| Haym HirshEmail: |
14.
World Book and Copyright Day was established by a resolution of the 28th General Council of UNESCO in 1995. Its avowed aim
was ‘to pay a world-wide tribute to books and authors on this date, encouraging everyone, and in particular young people,
to discover the pleasure of reading and gain a renewed respect for the irreplaceable contributions of those who have furthered
the social and cultural progress of humanity.’ This article examines the context for World Book and Copyright Day, the extent
to which cultural and commercial interests have converged in the activities of the day and argues that an analysis of the
activities of the day reveal a specifically European attitude to book culture.
相似文献
| Alexis WeedonEmail: |
15.
Query structuring and expansion with two-stage term dependence for Japanese web retrieval 总被引：1，自引：1，他引：0
In this paper, we propose a new term dependence model for information retrieval, which is based on a theoretical framework
using Markov random fields. We assume two types of dependencies of terms given in a query: (i) long-range dependencies that
may appear for instance within a passage or a sentence in a target document, and (ii) short-range dependencies that may appear
for instance within a compound word in a target document. Based on this assumption, our two-stage term dependence model captures
both long-range and short-range term dependencies differently, when more than one compound word appear in a query. We also
investigate how query structuring with term dependence can improve the performance of query expansion using a relevance model.
The relevance model is constructed using the retrieval results of the structured query with term dependence to expand the
query. We show that our term dependence model works well, particularly when using query structuring with compound words, through
experiments using a 100-gigabyte test collection of web documents mostly written in Japanese. We also show that the performance
of the relevance model can be significantly improved by using the structured query with our term dependence model.
相似文献
| Koji EguchiEmail: |
16.
On knowledge-poor methods for person name matching and lemmatization for highly inflectional languages 总被引：1，自引：1，他引：0
Web person search is one of the most common activities of Internet users. Recently, a vast amount of work on applying various
NLP techniques for person name disambiguation in large web document collections has been reported, where the main focus was
on English and few other major languages. This article reports on knowledge-poor methods for tackling person name matching
and lemmatization in Polish, a highly inflectional language with complex person name declension paradigm. These methods apply
mainly well-established string distance metrics, some new variants thereof, automatically acquired simple suffix-based lemmatization
patterns and some combinations of the aforementioned techniques. Furthermore, we also carried out some initial experiments
on deploying techniques that utilize the context, in which person names appear. Results of numerous experiments are presented.
The evaluation carried out on a data set extracted from a corpus of on-line news articles revealed that achieving lemmatization
accuracy figures greater than 90% seems to be difficult, whereas combining string distance metrics with suffix-based patterns
results in 97.6–99% accuracy for the name matching task. Interestingly, no significant additional gain could be achieved through
integrating some basic techniques, which try to exploit the local context the names appear in. Although our explorations were
focused on Polish, we believe that the work presented in this article constitutes practical guidelines for tackling the same
problem for other highly inflectional languages with similar phenomena.
相似文献
| Marcin SydowEmail: |
17.
18.
A comparison of analyses of the Scottish publishing industry carried out in 1992, 2002 and 2007 underscores the fragility
of the sector within a small country within the English-language community. A number of indices reveal either stability or
stagnation and the picture emerges of the remarkable tenacity of publishing in Scotland. Although there is already a significant
and vital element of state support for publishing in Scotland, further intervention will be necessary to ensure fulfilment
of its potential.
相似文献
| Alistair McCleeryEmail: |
19.
Compound noun segmentation is a key first step in language processing for Korean. Thus far, most approaches require some form of human supervision, such as pre-existing dictionaries, segmented compound nouns, or heuristic rules. As a result, they suffer from the unknown word problem, which can be overcome by unsupervised approaches. However, previous unsupervised methods normally do not consider all possible segmentation candidates, and/or rely on character-based segmentation clues such as bi-grams or all-length n-grams. So, they are prone to falling into a local solution. To overcome the problem, this paper proposes an unsupervised segmentation algorithm that searches the most likely segmentation result from all possible segmentation candidates using a word-based segmentation context. As word-based segmentation clues, a dictionary is automatically generated from a corpus. Experiments using three test collections show that our segmentation algorithm is successfully applied to Korean information retrieval, improving a dictionary-based longest-matching algorithm.
相似文献
| Jong-Hyeok LeeEmail: |
20.
Diego Reforgiato Recupero 《Information Retrieval》2007,10(6):563-579
Text document clustering provides an effective and intuitive navigation mechanism to organize a large amount of retrieval
results by grouping documents in a small number of meaningful classes. Many well-known methods of text clustering make use
of a long list of words as vector space which is often unsatisfactory for a couple of reasons: first, it keeps the dimensionality
of the data very high, and second, it ignores important relationships between terms like synonyms or antonyms. Our unsupervised
method solves both problems by using ANNIE and WordNet lexical categories and WordNet ontology in order to create a well structured
document vector space whose low dimensionality allows common clustering algorithms to perform well. For the clustering step
we have chosen the bisecting k-means and the Multipole tree, a modified version of the Antipole tree data structure for, respectively, their accuracy and
speed.
相似文献
| Diego Reforgiato RecuperoEmail: |