VizMaps: A Bayesian Topic Modeling Based PubMed Search Interface

<p>A common challenge that users of academic databases face is making sense of their query outputs for knowledge discovery. This is exacerbated by the size and growth of modern databases. PubMed, a central index of biomedical literature, contains over 25 million citations, and can output search results containing hundreds of thousands of citations. Under these conditions, efficient knowledge discovery requires a different data structure than a chronological list of articles. It requires a method of conveying what the important ideas are, where they are located, and how they are connected; a method of allowing users to see the underlying topical structure of their search. This paper presents VizMaps, a PubMed search interface that addresses some of these problems. Given search terms, our main backend pipeline extracts relevant words from the title and abstract, and clusters them into discovered topics using Bayesian topic models, in particular the Latent Dirichlet Allocation (LDA). It then outputs a visual, navigable map of the query results.</p>

Tambalacoque. For a formal account of the gist of a scholarly argument

Argumentation as reflected in a short communication from the published literature of botany and zoology is discussed. Trying to capture the logic structure of the argument, however imperfectly, is relevant to information science and depends on a particular goal: namely, to potentially benefit the task of sketching the relationship between bibliographic entries in a better manner than is possible with present-day bibliometric or scientometric practice. This imposes tight limits on the depth of analysis of the text.

Distributed digital post-production

It is now possible to use powerful general purpose computer architectures to support post-production of both video and multimedia projects. By devising a suitable portable software architecture and using high-speed networking in an appropriate manner, a system has been constructed where editors are no longer tied to a specific location. New types of production, such as multi-threaded interactive video, are supported. Editors may also work remotely where very high speed network connection is not currently provided. An object-oriented database is used for the comprehensive cataloging of material and to support automatic audio/video object migration and replication. Copyright �� 1997 by the Society of Motion Picture and Television Engineers, Inc.

A verification system for cinematographer image generation tools

The Production Workstation developed at the University of Greenwich is evaluated as a tool for assisting all those concerned with production. It enables the producer, director, and cinematographer to explore the quality of the images obtainable when using a plethora of tools. Users are free to explore many possible choices, ranging from 35mm to DV, and combine them with the many image manipulation tools of the cinematographer. The validation required for the system is explicitly examined, concerning the accuracy of the resulting imagery. Copyright �� 1999 by the Society of Motion Picture and Television Engineers, Inc.

Cheats offer lesson in learning

Plagiarism and the internet should make us rethink the purpose of assessment, says Tony Mann.

A framework for state-based time-series analysis and prediction

Time-series analysis and prediction play an important role in state-based systems that involve dealing with varying situations in terms of states of the world evolving with time. Generally speaking, the world in the discourse persists in a given state until something occurs to it into another state. This paper introduces a framework for prediction and analysis based on time-series of states. It takes a time theory that addresses both points and intervals as primitive time elements as the temporal basis. A state of the world under consideration is defined as a set of time-varying propositions with Boolean truth-values that are dependent on time, including properties, facts, actions, events and processes, etc. A time-series of states is then formalized as a list of states that are temporally ordered one after another. The framework supports explicit expression of both absolute and relative temporal knowledge. A formal schema for expressing general time-series of states to be incomplete in various ways, while the concept of complete time-series of states is also formally defined. As applications of the formalism in time-series analysis and prediction, we present two illustrating examples.

Narrating the archive and archiving narrative: the electronic book and the logic of the index

The creation of my hypermedia work Index of Love, which narrates a love story as an archive of moments, images and objects recollected, also articulated for me the potential of the book as electronic text. The book has always existed as both narrative and archive. Tables of contents and indexes allow the book to function simultaneously as linear narrative and non-linear, searchable database. The book therefore has more in common with the so-called 'new media' of the 21st century than it does with the dominant 20th century media of film, video and audiotape, whose logic and mode of distribution are resolutely linear. My thesis is that the non-linear logic of new media brings to the fore an aspect of the book - the index - whose potential for the production of narrative is only just beginning to be explored. When a reader/user accesses an electronic work, such as a website, via its menu, they simultaneously experience it as narrative and archive. The narrative journey taken is created through the menu choices made. Within the electronic book, therefore, the index (or menu) has the potential to function as more than just an analytical or navigational tool. It has the potential to become a creative, structuring device. This opens up new possibilities for the book, particularly as, in its paper based form, the book indexes factual work, but not fiction. In the electronic book, however, the index offers as rich a potential for fictional narratives as it does for factual volumes. [ABSTRACT FROM AUTHOR]

Temporal pattern recognition in video clips detection

Temporal representation and reasoning plays an important role in Data Mining and Knowledge Discovery, particularly, in mining and recognizing patterns with rich temporal information. Based on a formal characterization of time-series and state-sequences, this paper presents the computational technique and algorithm for matching state-based temporal patterns. As a case study of real-life applications, zone-defense pattern recognition in basketball games is specially examined as an illustrating example. Experimental results demonstrate that it provides a formal and comprehensive temporal ontology for research and applications in video events detection.

Analysis of audiovisual production and music scene in Extremadura through YouTube channels

A study on Extremenian music and audiovisual production has been carried out through YouTube media. The purpose of this study is to analyze all audiovisual products and also assessing what broadcasting processes are conducted by creators to publicize their musical and audiovisual works. A quantitative and qualitative study of audiovisual materials of Extremadura bands was done to find out which processes are most suitable to increase the number of viewers for videos.

La Web Sem��ntica y los archivos de televisi��n: estado de la cuesti��n

Se analizan y describen las principales l��neas de trabajo de la Web Sem��ntica en el ��mbito de los archivos de televisi��n. Para ello, se analiza y contextualiza la web sem��ntica desde una perspectiva general para posteriormente analizar las principales iniciativas que trabajan con lo audiovisual: Proyecto MuNCH, Proyecto S5T, Semantic Television y VideoActive.

La existencia de necesidades de informaci��n y comportamiento informativo en los entrenadores en deportes de combate

Este trabajo tiene como prop��sito esencial, realizar un acercamiento para detectar e identificar las necesidades de informaci��n y el comportamiento informativo de entrenadores en deportes de combate. Para ello se aplic�� un cuestionario a instructores de aikido, boxeo, esgrima, judo, karate, kendo, lima lama, lucha y taekwondo seleccionados mediante un muestreo no probabil��stico por causalidad. En general encontramos que los principales temas de inter��s entre los instructores son: los programas de entrenamiento, nutrici��n y dietas de entrenamiento. Por otra parte, los entrenadores son m��s propensos a utilizar su experiencia, internet y cursos para obtener informaci��n. En contraste se nota que la biblioteca y los libros son poco usados.

Una revisi��n de la Cadena Datos-Informaci��n-Conocimiento desde el Pragmatismo de Peirce

La Cadena Datos-Informaci��n-Conocimiento (DIC), denominada ���Jerarqu��a de la Informaci��n��� o ���Pir��mide del Conocimiento���, es uno de los modelos m��s importantes en la Gesti��n de la Informaci��n y la Gesti��n del Conocimiento. Por lo general, la estructuraci��n de la cadena se ha ido definiendo como una arquitectura en la que cada elemento se levanta sobre el elemento inmediatamente inferior; sin embargo no existe un consenso en la definici��n de los elementos, ni acerca de los procesos que transforman un elemento de un nivel a uno del siguiente nivel. En este art��culo se realiza una revisi��n de la Cadena Datos-Informaci��n-Conocimiento examinando las definiciones m��s relevantes sobre sus elementos y sobre su articulaci��n en la literatura, para sintetizar las acepciones m��s comunes. Se analizan los elementos de la Cadena DIC desde la semi��tica de Peirce; enfoque que nos permite aclarar los significados e identificar las diferencias, las relaciones y los roles que desempe��an en la cadena desde el punto de vista del pragmatismo. Finalmente se propone una definici��n de la Cadena DIC apoyada en las categor��as tri��dicas de signos y la semiosis ilimitada de Peirce, los niveles de sistemas de signos de Stamper y las met��foras de Zeleny.

Evaluating the quality of learning in Computer Supported Co-operative Learning

Can learning quality be maintained in the face of increasing class size by the use of Computer Supported Co-operative Learning (CSCL) technologies? In particular, can Computer-Mediated Communication promote critical thinking in addition to surface information transfer? We compared face-to-face seminars with asynchronous computer conferencing in the same Information Management class. From Garrison's theory of critical thinking and Henri's critical reasoning skills, we developed two ways of evaluating critical thinking: a student questionnaire and a content analysis technique. We found evidence for critical thinking in both situations, with some subtle differences in learning style. This paper provides an overview of this work.