-
Ackermann, E.: Piaget's constructivism, Papert's constructionism : what's the difference? (2001)
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- Content
- Vgl.: https://www.semanticscholar.org/paper/Piaget-%E2%80%99-s-Constructivism-%2C-Papert-%E2%80%99-s-%3A-What-%E2%80%99-s-Ackermann/89cbcc1e740a4591443ff4765a6ae8df0fdf5554. Darunter weitere Hinweise auf verwandte Beiträge. Auch unter: Learning Group Publication 5(2001) no.3, S.438.
-
Houston, R.D.; Harmon, E.G.: Re-envisioning the information concept : systematic definitions (2002)
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- Date
- 22. 2.2007 18:56:23
22. 2.2007 19:22:13
-
Gödert, W.; Hubrich, J.; Boteram, F.: Thematische Recherche und Interoperabilität : Wege zur Optimierung des Zugriffs auf heterogen erschlossene Dokumente (2009)
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- Source
- https://opus4.kobv.de/opus4-bib-info/frontdoor/index/index/searchtype/authorsearch/author/%22Hubrich%2C+Jessica%22/docId/703/start/0/rows/20
-
Understanding metadata (2004)
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- Abstract
- Metadata (structured information about an object or collection of objects) is increasingly important to libraries, archives, and museums. And although librarians are familiar with a number of issues that apply to creating and using metadata (e.g., authority control, controlled vocabularies, etc.), the world of metadata is nonetheless different than library cataloging, with its own set of challenges. Therefore, whether you are new to these concepts or quite experienced with classic cataloging, this short (20 pages) introductory paper on metadata can be helpful
- Date
- 10. 9.2004 10:22:40
-
Park, J.-r.: Cross-lingual name and subject access : mechanisms and challenge (2007)
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- Abstract
- This paper considers issues surrounding name and subject access across languages and cultures, particularly mechanisms and knowledge organization tools (e.g., cataloging, metadata) for cross-lingual information access. The author examines current mechanisms for cross-lingual name and subject access and identifies major factors that hinder cross-lingual information access. The author provides examples from the Korean language that demonstrate the problems with cross-language name and subject access.
- Date
- 10. 9.2000 17:38:22
-
Oliveira Lima, J.A. de; Palmirani, M.; Vitali, F.: ¬A time-aware ontology for legal resources (2008)
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- Content
- This paper presents a new approach to associating metadata to legal documents by exploiting a fully developed information ontology of legal resources that takes time into account. Our information ontology is technically an application of the FRBR model to organization of legal documents. Our contribution clarifies not only the diachronic evolution of the legal resources in time, but it also puts the theoretical grounding for the modeling of the relationships between the different entities participating to the legislative process workflow (e.g. bills, amendments). Our model is also applicable to all artefacts of the publishing process. Moreover the time dimension can be used to support successful interconnections between different legal resources (e.g. between normative acts and case-law) that need precise point-in-time referencing.
- Date
- 27.12.2008 9:49:22
-
Hotho, A.; Bloehdorn, S.: Data Mining 2004 : Text classification by boosting weak learners based on terms and concepts (2004)
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- Content
- Vgl.: http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CEAQFjAA&url=http%3A%2F%2Fciteseerx.ist.psu.edu%2Fviewdoc%2Fdownload%3Fdoi%3D10.1.1.91.4940%26rep%3Drep1%26type%3Dpdf&ei=dOXrUMeIDYHDtQahsIGACg&usg=AFQjCNHFWVh6gNPvnOrOS9R3rkrXCNVD-A&sig2=5I2F5evRfMnsttSgFF9g7Q&bvm=bv.1357316858,d.Yms.
- Date
- 8. 1.2013 10:22:32
-
Aringhieri, R.; Damiani, E.; De Capitani di Vimercati, S.; Paraboschi, S.; Samarati, P.: Fuzzy techniques for trust and reputation management in anonymous peer-to-peer systems (2006)
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- Abstract
- Peer-to-peer (P2P) applications are rapidly gaining acceptance among users of Internet-based services, especially because of their capability of exchanging resources while preserving the anonymity of both requesters and providers. However, concerns have been raised about the possibility that malicious users can exploit the network to spread tampered-with resources (e.g., malicious programs and viruses). A considerable amount of research has thus focused on the development of trust and reputation models in P2P networks. In this article, we propose to use fuzzy techniques in the design of reputation systems based on collecting and aggregating peers' opinions. Fuzzy techniques are used in the evaluation and synthesis of all the opinions expressed by peers. The behavior of the proposed system is described by comparison with probabilistic approaches.
- Date
- 22. 7.2006 17:06:18
-
Atkinson, R.: ¬A rationale for the redesign of scholarly information exchange (2000)
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- Abstract
- The disintermediation that will inevitably result from the increased electronic publication of specialized scholarly information affords an excellent opportunity for one of the traditional intermediaries (e.g., libraries, publishers) to assume responsibilities previously held by other intermediaries. Members of the academy should use this opportunity to take back the responsibility for a significant portion of the specialized scholarly publishing that has, in the traditional environment, been placed in the hands of external publishers. The most imposing impediment to such a reappropriation by the academy derives from the inability of institutions to cooperate with each other. If new attitudes could be created within the academy to circumvent that obstruction, then an academy-based process of scholarly information exchange would finally be feasible. One effective model for such a new form of scholarly publishing would be to establish separate domains, or designated channels, for individual disciplines.
- Date
- 10. 9.2000 17:38:22
-
Neuroth, H.; Pianos, T.: VASCODA: a German scientific portal for cross-searching distributed digital resource collections (2003)
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- Abstract
- The German information science community - with the support of the two main funding agencies in Germany - will develop a scientific portal, vascoda, for cross-searching distributed metadata collections. In platitudinous words, one of the services of vascoda is going to be a ldquoGooglerdquo-like search for the academic community, an easy to use, yet sophisticated search-engine to supply information on high-quality resources from different media and technical environments. Reaching this objective requires considerable standardisation activity amongst the main players to harmonise the already existing services (e.g. regarding metadata, protocols, etc.). The co-operation amongst the participants including both of the funding agencies is creating a unique team-work situation in Germany thus strengthening the information science community.
- Source
- Research and advanced technology for digital libraries : 7th European Conference, proceedings / ECDL 2003, Trondheim, Norway, August 17-22, 2003
-
Stamatatos, E.: ¬A survey of modern authorship attribution methods (2009)
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- Abstract
- Authorship attribution supported by statistical or computational methods has a long history starting from the 19th century and is marked by the seminal study of Mosteller and Wallace (1964) on the authorship of the disputed Federalist Papers. During the last decade, this scientific field has been developed substantially, taking advantage of research advances in areas such as machine learning, information retrieval, and natural language processing. The plethora of available electronic texts (e.g., e-mail messages, online forum messages, blogs, source code, etc.) indicates a wide variety of applications of this technology, provided it is able to handle short and noisy text from multiple candidate authors. In this article, a survey of recent advances of the automated approaches to attributing authorship is presented, examining their characteristics for both text representation and text classification. The focus of this survey is on computational requirements and settings rather than on linguistic or literary issues. We also discuss evaluation methodologies and criteria for authorship attribution studies and list open questions that will attract future work in this area.
- Date
- 22. 3.2009 17:44:32
-
Bartlett, J.C.; Toms, E.G.: Developing a protocol for bioinformatics analysis : an integrated information behavior and task analysis approach (2005)
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- Date
- 22. 7.2006 14:28:55
-
Sun, A.; Lim, E.-P.: Web unit-based mining of homepage relationships (2006)
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- Abstract
- Homepages usually describe important semantic information about conceptual or physical entities; hence, they are the main targets for searching and browsing. To facilitate semantic-based information retrieval (IR) at a Web site, homepages can be identified and classified under some predefined concepts and these concepts are then used in query or browsing criteria, e.g., finding professor homepages containing information retrieval. In some Web sites, relationships may also exist among homepages. These relationship instances (also known as homepage relationships) enrich our knowledge about these Web sites and allow more expressive semantic-based IR. In this article, we investigate the features to be used in mining homepage relationships. We systematically develop different classes of inter-homepage features, namely, navigation, relative-location, and common-item features. We also propose deriving for each homepage a set of support pages to obtain richer and more complete content about the entity described by the homepage. The homepage together with its support pages are known to be a Web unit. By extracting inter-homepage features from Web units, our experiments on the WebKB dataset show that better homepage relationship mining accuracies can be achieved.
- Date
- 22. 7.2006 16:18:25
-
O'Brien, H.L.; Toms, E.G.: What is user engagement? : a conceptual framework for defining user engagement with technology (2008)
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- Date
- 21. 3.2008 13:39:22
-
Farooq, U.; Ganoe, C.H.; Carroll, J.M.; Councill, I.G.; Giles, C.L.: Design and evaluation of awareness mechanisms in CiteSeer (2008)
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- Abstract
- Awareness has been extensively studied in human computer interaction (HCI) and computer supported cooperative work (CSCW). The success of many collaborative systems hinges on effectively supporting awareness of different collaborators, their actions, and the process of creating shared work products. As digital libraries are increasingly becoming more than just repositories for information search and retrieval - essentially fostering collaboration among its community of users - awareness remains an unexplored research area in this domain. We are investigating awareness mechanisms in CiteSeer, a scholarly digital library for the computer and information science domain. CiteSeer users can be notified of new publication events (e.g., publication of a paper that cites one of their papers) using feeds as notification systems. We present three cumulative user studies - requirements elicitation, prototype evaluation, and naturalistic study - in the context of supporting CiteSeer feeds. Our results indicate that users prefer feeds that place target items in query-relevant contexts, and that preferred context varies with type of publication event. We found that users integrated feeds as part of their broader, everyday activities and used them as planning tools to collaborate with others.
- Date
- 29. 7.2008 19:27:22
-
Eiriksson, J.M.; Retsloff, J.M.: Librarians in the 'information age' : promoter of change or provider of stability? (2005)
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- Abstract
- When we were all facing the turn of the century and the somewhat larger turn of the millennium, we left behind epochs of colonialism, imperialism, capitalism, nazism and racialism. Not that the ideologies mentioned does no longer exist, but their impact as grand narratives has gone and they now exist as fragmented discursive parts of their former, illusive hegemony. Parts that have been thrown into the pits of post modern complexity. The 21st century holds no answers, no new meaning, at most it provides human communication a certain self reflectivity due to the increasing egocentrism and individuality of people (i.e. still mostly western people). Another symptom of the loss of grand narratives is a feeling of loss of meaning in everyday life, as well as the state of democracies around the world. Democracy shivers in its void between anarchy and repressive dictatorship. The description 'information age' provides the times we are in with a useful sticker. It tents both back in time e.g. the late 20, century digitalisation and forward in time by givingr origin to the contemporary discourse of social semantics i.e. Dream society, Knowledge society, Post modern society, Risk society, Hypercomplex society etc. The phrase 'information age' implied the introduction of a paradigm shift, and now it is still here showing that paradigms do not shift, they slide. This paper outlines a manifest for librarians and librarianship of the information age. The information age puts the spotlight on the librarian, both regarding classical tasks such as classification and cataloguing as well as new tasks such as systems analysis and design or database searching.
- Date
- 22. 7.2009 11:23:22
-
Multimedia content and the Semantic Web : methods, standards, and tools (2005)
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- Classification
- 006.7 22
- Date
- 7. 3.2007 19:30:22
- DDC
- 006.7 22
- Footnote
- Semantic web technologies are explained, and ontology representation is emphasized. There is an excellent summary of the fundamental theory behind applying a knowledge-engineering approach to vision problems. This summary represents the concept of the semantic web and multimedia content analysis. A definition of the fuzzy knowledge representation that can be used for realization in multimedia content applications has been provided, with a comprehensive analysis. The second part of the book introduces the multimedia content analysis approaches and applications. In addition, some examples of methods applicable to multimedia content analysis are presented. Multimedia content analysis is a very diverse field and concerns many other research fields at the same time; this creates strong diversity issues, as everything from low-level features (e.g., colors, DCT coefficients, motion vectors, etc.) up to the very high and semantic level (e.g., Object, Events, Tracks, etc.) are involved. The second part includes topics on structure identification (e.g., shot detection for video sequences), and object-based video indexing. These conventional analysis methods are supplemented by results on semantic multimedia analysis, including three detailed chapters on the development and use of knowledge models for automatic multimedia analysis. Starting from object-based indexing and continuing with machine learning, these three chapters are very logically organized. Because of the diversity of this research field, including several chapters of recent research results is not sufficient to cover the state of the art of multimedia. The editors of the book should write an introductory chapter about multimedia content analysis approaches, basic problems, and technical issues and challenges, and try to survey the state of the art of the field and thus introduce the field to the reader.
-
Fallis, D.: Toward an epistemology of Wikipedia (2008)
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- Abstract
- Wikipedia (the free online encyclopedia that anyone can edit) is having a huge impact on how a great many people gather information about the world. So, it is important for epistemologists and information scientists to ask whether people are likely to acquire knowledge as a result of having access to this information source. In other words, is Wikipedia having good epistemic consequences? After surveying the various concerns that have been raised about the reliability of Wikipedia, this article argues that the epistemic consequences of people using Wikipedia as a source of information are likely to be quite good. According to several empirical studies, the reliability of Wikipedia compares favorably to the reliability of traditional encyclopedias. Furthermore, the reliability of Wikipedia compares even more favorably to the reliability of those information sources that people would be likely to use if Wikipedia did not exist (viz., Web sites that are as freely and easily accessible as Wikipedia). In addition, Wikipedia has a number of other epistemic virtues (e.g., power, speed, and fecundity) that arguably outweigh any deficiency in terms of reliability. Even so, epistemologists and information scientists should certainly be trying to identify changes (or alternatives) to Wikipedia that will bring about even better epistemic consequences. This article suggests that to improve Wikipedia, we need to clarify what our epistemic values are and to better understand why Wikipedia works as well as it does. Somebody who reads Wikipedia is rather in the position of a visitor to a public restroom, says Mr. McHenry, Britannica's former editor. It may be obviously dirty, so that he knows to exercise great care, or it may seem fairly clean, so that he may be lulled into a false sense of security. What he certainly does not know is who has used the facilities before him. One wonders whether people like Mr. McHenry would prefer there to be no public lavatories at all. The Economist (Vol. 379, April 22, 2006, pp. 14-15)
-
Robertson, R.J.; Barker, P.; Barker, M.: Metadata in an ecosystem of presentation dissemination (2008)
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- Abstract
- Developing and managing local practices about metadata implementation (desired quality, workflow, support tools, guidelines, and vocabularies) and about metadata exposure (supported standards, and pre-exposure transformations) requires an ability to understand and communicate the specific complex settings in which the metadata, resources, and users exist. Developing such an understanding is often informed by an implicit or explicit conceptual model. Ecology is the study of complex natural systems, with the aim of understanding and modeling the processes and interactions between the participants in the system and their environment. The concept is also widely used as a metaphor to describe complex systems within their settings. The Repositories Research Team (which supports repository development work in UK HE) has been examining the use of ecology as a metaphor to support the understanding and representation of interactions between repositories, dependent services, and their users. These interactions whether technical, political, or cultural have a direct impact on the metadata in each repository. Where many other approaches to modeling facilitate an abstract view of a single type of interaction; the ecologically influenced approach seeks to support communication of the combined influences of a repository's technical and cultural setting, however specific and chaotic (or messy) it may be. The idea that ecology is a suitable metaphor for the interaction of users and technologies has been considered by Davenport (1997), by Nardi and O'Day (2000), in strand of projects funded by the European Union (see Nachira et al., 2007), and by Robertson et al. (2008). This poster presents an ecologically influenced view of a researcher seeking to disseminate and store their presentations. The interactions and resources that will be considered, as they influence the metadata, include the storage of the presentation in formal and informal services (a repository, SlideShare), different versions of the intellectual content (blog post, slides, paper), different formats (PowerPoint, PDF). Environmental factors, which affect the metadata, that will be considered include influences on the researcher (e.g. availability of web 2.0 tools, the link between career progression and publication of research, a commitment to sharing resources, and institutional policies) and influences on the institutional policies (such as IPR concerns about the use of third party material or the loss of university ownership of intellectual outputs or branding).
- Source
- Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
-
Shoffner, M.; Greenberg, J.; Kramer-Duffield, J.; Woodbury, D.: Web 2.0 semantic systems : collaborative learning in science (2008)
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- Abstract
- The basic goal of education within a discipline is to transform a novice into an expert. This entails moving the novice toward the "semantic space" that the expert inhabits-the space of concepts, meanings, vocabularies, and other intellectual constructs that comprise the discipline. Metadata is significant to this goal in digitally mediated education environments. Encoding the experts' semantic space not only enables the sharing of semantics among discipline scientists, but also creates an environment that bridges the semantic gap between the common vocabulary of the novice and the granular descriptive language of the seasoned scientist (Greenberg, et al, 2005). Developments underlying the Semantic Web, where vocabularies are formalized in the Web Ontology Language (OWL), and Web 2.0 approaches of user-generated folksonomies provide an infrastructure for linking vocabulary systems and promoting group learning via metadata literacy. Group learning is a pedagogical approach to teaching that harnesses the phenomenon of "collective intelligence" to increase learning by means of collaboration. Learning a new semantic system can be daunting for a novice, and yet it is integral to advance one's knowledge in a discipline and retain interest. These ideas are key to the "BOT 2.0: Botany through Web 2.0, the Memex and Social Learning" project (Bot 2.0).72 Bot 2.0 is a collaboration involving the North Carolina Botanical Garden, the UNC SILS Metadata Research center, and the Renaissance Computing Institute (RENCI). Bot 2.0 presents a curriculum utilizing a memex as a way for students to link and share digital information, working asynchronously in an environment beyond the traditional classroom. Our conception of a memex is not a centralized black box but rather a flexible, distributed framework that uses the most salient and easiest-to-use collaborative platforms (e.g., Facebook, Flickr, wiki and blog technology) for personal information management. By meeting students "where they live" digitally, we hope to attract students to the study of botanical science. A key aspect is to teach students scientific terminology and about the value of metadata, an inherent function in several of the technologies and in the instructional approach we are utilizing. This poster will report on a study examining the value of both folksonomies and taxonomies for post-secondary college students learning plant identification. Our data is drawn from a curriculum involving a virtual independent learning portion and a "BotCamp" weekend at UNC, where students work with digital plan specimens that they have captured. Results provide some insight into the importance of collaboration and shared vocabulary for gaining confidence and for student progression from novice to expert in botany.
- Source
- Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
