2,465 research outputs found
From the invalidity of a General Classification Theory to a new organization of knowledge for the millennium to come
Proceedings der 10. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation. Wien, 3-5 Juli 2006The idea of organizing knowledge and the determinism in classifícation structures implicitly involve certain limits which are translated into a General Theory on the Classifícation of Knowledge, given that classifícation responds to specific parameters and structures more than to a theoretical concept. The classifícation of things is a refiection of their classifícation by man, and this is what determines classifícation structures. The classifícation and organization of knowledge are presented to us as an artificial construct or as a useful fiction elaborated by man. Positivist knowledge reached its peak in the 20* century when science classifications and implemented classifícation systems based on the latter were to be gestated and Consolidated. Pragmatism was to serve as the epistemological and theoretical basis for science and its classifícation. If the classifícation of the sciences has given rise to clastification systems, the organisation and representation of knowledge has to currendy give rise to the context of the globalisation of electronic information in the hypertextual organisational form of electronic information where, if in information the médium ivas the message, in organisation the médium is the structure. The virtual reality of electronic information delves even deeper into it; the process is completed as the subject attempts to look for information. This information market needs standards of an international nature for documents and data. This body of information organization will be characterized by its dynamic nature. If formal and material structures change our concept of knowledge and the way it is structured, then this organization will undergo dynamic change along with the material and formal structures of the real world. The semantic web is a qualitative leap which can be glimpsed on tiie new knowledge horizon; the latter would be shaped with the full integration of contents and data, the language itself would include data and its rules of reason or representation system. The new organisation of knowledge points to a totally nCw conception; post-modern epistemology has yet to be articulated. In the 21 st century, the organization of electronic information is presenting a novel hypertextual, non-linear architecture that will lead to a new change in the paradigm for organization of knowledge for the mülennium to come.Publicad
Interoperability between classification systems using metadata
The First on-Line conference on Metadata and Semantics Research Conference (MTSR'05): Approaches to advanced information systems, 21-30 November 2005Metadata are structures which catalogue, classify, describe and articulate electronic information. The Subject element of Dublin Core is used for c1assification systems and subject headings. There are five ways of applying semantic interoperability: interoperability between controlled vocabularies in the same language; between controlled vocabularies in different languages and classification systems; between subject headings and c1assification systems; between c1assification systems; and between languages. The relations between diverse types of standards or systems present diverse difficulties. The electronic information container, which is Internet, guarantees the trend to try and achieve the interoperability of content analysis, whether it be between c1assification systems, or subject headings. The organisation of information in a physical format has transferred its organisational forms to the structuring of electronic information. The digital formal transforms the organisational form itself. If, in information the message is the medium, in organisation the structure is the medium.Publicad
UPM-UC3M system for music and speech segmentation
This paper describes the UPM-UC3M system for the Albayzín evaluation 2010 on Audio Segmentation. This evaluation task consists of segmenting a broadcast news audio document into clean speech, music, speech with noise in background and speech with music in background. The UPM-UC3M system is based on Hidden Markov Models (HMMs), including a 3-state HMM for every acoustic class. The number of states and the number of Gaussian per state have been tuned for this evaluation. The main analysis during system development has been focused on feature selection. Also, two different architectures have been tested: the first one corresponds to an one-step system whereas the second one is a hierarchical system in which different features have been used for segmenting the different audio classes. For both systems, we have considered long term statistics of MFCC (Mel Frequency Ceptral Coefficients), spectral entropy and CHROMA coefficients. For the best configuration of the one-step system, we have obtained a 25.3% average error rate and 18.7% diarization error (using the NIST tool) and a 23.9% average error rate and 17.9% diarization error for the hierarchical one
Strengthening financial innovations in energy supply projects for rural exploitations in developing countries
Sustainable energy supply models are needed to achieve the Millennium Development Goals established by the United Nations for 2015. On the other hand, sustainability of agricultural exploitations in rural areas is a pre-requisite to achieve the objective of halving the proportion of people that lives in poverty, and productivity of such exploitations is closely related to energy supply. This article analyses the results of a survey of experts, suggesting that there may be good chances to innovate in the financing of agricultural electrification projects in developing countries. The experts’ opinion suggests that new sources of financing could be mobilised and oriented towards the promotion of sustainable initiatives in developing countries. Financial mechanisms should be adapted to the characteristics of decentralised systems of energy production with renewable sources or with mixed technologies, in order to overcome the barriers derived from the high initial price of the applications, and to the specific conditions of the agricultural sector. The participation of funds from the beneficiaries and the incorporation of the beneficiaries in the initial phases of project organisation would allow for the development of productive solutions with a higher potential to generate resources and to articulate sustainable proposals. r 2007 Elsevier Ltd. All rights reserved
Evitar la merma en la formulación el conocimiento: aportación de Sonia Muñoz-Alonso
Sin resume
Human capital and other determinants in the life cycle of the price of a slave: The case of spanish america in the eighteenth century
This paper analizes the determinants of the price life cicle of a slave, dealing particularly with the impact of the human capital, both with respect to skills and health. The paper details the source of the sample -including more than two thousand Spanish American Slaves of the 18th Century-and discusses its reliability, moving on to a descriptive analysis in the geographic and historical context. Later on it looks at the factors influencing price in several types of economic activity, and ends by comparing the conclusions with those obtained in other studies
Design of pixel-level ADCs for energy-sensitive hybrid pixel detectors
Single-photon counting hybrid pixel detectors have shown\ud
to be a valid alternative to other types of X-ray imaging\ud
devices due to their high sensitivity, low noise, linear behavior\ud
and wide dynamic range. One important advantage of these\ud
devices is the fact that detector and readout electronics are\ud
manufactured separately. This allows the use of industrial\ud
state-of-the-art CMOS processes to make the readout\ud
electronics, combined with a free choice of detector material\ud
(high resistivity Silicon, GaAs or other). By measuring not\ud
only the number of X-ray photons but also their energies (or\ud
wavelengths), the information content of the image increases,\ud
given the same X-ray dose. We have studied several\ud
possibilities of adding energy sensitivity to the single photon\ud
counting capability of hybrid pixel detectors, by means of\ud
pixel-level analog-to-digital converters. We show the results of\ud
simulating different kinds of analog-to-digital converters in\ud
terms of power, area and speed
The effect of globalization on the organization of knowledge
Proceedings of: 9th World Multi-Conference on Systemics, Cybernetics and Informatics: WMSCI 2005, july 10 - 13, 2005, Orlando, Florida, USAThe globalization of electronic information does not
seek out a more democratic and egalitarian society.
Information is articulated within a set of gears that
entail the social exclusion of those who lack electronic
information. Different ways of accessing electronic
information also create specific and different forms of
development among different countries. There are
established and implanted historical ways of organizing,
and now technology can be used as a way to subjugate
or emancipate. The technological present restricts
thought, whereas the dominant ideology imposes a
certain form of organization. This is why it is necessary
to subvert this trend through different logical-semantic
and ethical-political tools. The complex network of
knowledge, symbolic representations, cultural networks
of knowledge and symbolism make up the backbone of
this integrated instrumentalization of our knowledge.
Traditional classifications of knowledge are limited like
Western epistemology, given that the demarcationism
which makes them up exacerbates difference, because
demarcating is a form of recognition and representation
of classifying structures, which wall off, delimit and
fortify. However, as with any form of power, there are
no discourses without counter-discourses, so a deconstruction
of this demarcationism is indispensable.
Classification is performed by creating always invented
borders with separating objectives, and the scientific
policy of memory and the organization of knowledge is
based on dominant ideas. Knowledge is reduced to a
structured, hierarchical wisdom which, however, takes
on the appearance of including others.
Coherence of meaning is sought out. All cultures are
organized around a closed discourse constructed using
explicative fragments. Power sets up the symbolic
order, and symbols are established as self-defense
mechanisms for meaning. Labeling the real is carried
out from a perspective of coherence. Naming and
conceptualizing means classifying. Reality is a
reproduction of meaning, and there is no reality outside
of the conscience, which is why the reality which has
not been named is intact. As for the Organization of
knowledge, reality is equivalent to representation, or in
other words, there is no other reality than the one which
is represented. In this way, everything that has not fit
into the electronic context is gradually left out of
reality.
The idea is to reduce the plurality of the real to the unit,
by way of concepts or ideas, and the process is
completed in the opposite direction when attempting to
re-construct or recover reality. The nullification of
plurality is thereby made complete. Moreover, identitybased
multi-culturalism attempts to construct otherness
on the basis of self. Culture lies in how things are
ordered. Demarcating means building imaginary
barriers, but there may also be transversal languages for
communication, all within the context of the community
of meaning. The human mind processes things using
programmed mechanisms, in a programming which
may be referred to as Theory, Culture or Religion.
Meaning is shared within a delimited conceptual
framework. Within one specific community, it need not
be inter-culturally shared, and therefore it lacks shared
trans-cultural categories. However, subverting this
order would be an act of rebellion against meaning and
its mindset.
The Revolution of Lights, otherwise known as the
Enlightenment or Modernity, made a commitment to
reason as the most powerful tool for facing the darkness
of the Middle Ages, and it also proposed alphabetical
organization to create order for knowledge in the
Encyclopedia. For the construction of electronic
knowledge, it will be necessary to crate a more humane
rationale and ethics, which must include many other
perspectives and even that which they forget.
Therefore, a new way of organizing knowledge is
necessary.
Within the methodology that sets up the Organization
and representation of knowledge, classification is the
most perishable, even more so that interpretation. Deconstruction
implies thinking about de-classification, or
in other words, the search for other organizational
orders in the universe of knowledge. The tree as an
organizational structure conveys power structures, and
conveys an order of a chaos, like the claim that says the
chaos that order imposes upon us. In the origin of
language lies an externalization of power. On the basis
of this pathos of distance is built the right to create
values and establish rules. In all, the theory of
classifying knowledge implies that all classification is
based on an ethics or set of values. And the very
gestation of language, of the hierarchy and
classification, may lie within the struggle for primitive
forms of control or imposition. It is within these parameters that knowledge organization Systems have
been created.Publicad
Clasificación automática mediante la CDU con el procedimiento en cadena
Actas de las I Jornadas de Tratamiento y Recuperación de Información (JOTRI), Valencia, España, 4-5 julio 2002Se entiende por clasificación
automática el proceso de agrupar según el
contenido las referencias de los documentos
o bien los propios documentos electróneos.
Este proceso se realiza mediante
programas capaces de comparar términos
empleados utilizados en el documento. E
incluso hay otras formas automáticas de
clasificación que emplean procedimientos
automáticos para generar clases de documentos
También existen los sistemas automáticos
de que extraen términos de
indización, sin embargo la clasificación
automática empleando sistemas de clasificación
va a resultar mas compleja.
Con el fin de clasificar automáticamente
usando sistemas de clasificación como la
CDU es imprescindible un índice alfabético
de materias y términos del lenguaje natural
asociados a cada notación de la CDU, de
forma tal que todas las notaciones tendrían
vinculadas términos del lenguaje natural y
encabezamientos de materias. Este método
empleado para la clasificación automática
es el procedimiento de cadena ideado por
Ranganathan. El procedimiento en cadena
supone la construcción de encabezamientos
alfabéticos y términos del lenguaje natural,
asociados a una Clasificación sistemática
de estructura jerárquica y con notación
preferentemente numérica. La clasificación
automática mediante el procedimiento en
cadena supone el proceso donde de los
términos alfabéticos asociados a un documento
obtendríamos, de forma automática,
la asignación de su notación correspondiente
y también el proceso inverso. El
sistema de clasificación que mas se ha
aplicado a esta forma de clasificación automática
es la Clasificación Decimal de Dewey
electrónica la 21a ed. que incluye
asociados encabezamientos de materia
(LCSH) con los números clasifícatenos.
Sistemas de clasificación muy relevantes,
como la CDU, carecen de la edición
electrónica de sus tablas con el procedimiento
en cadena. Sin embargo ya hay
varios ejemplos prácticos de clasificación
automática empleando la Clasificación
Decimal Universal y además se emplea
para la clasificación automática de los
recursos de Internet, se trata de sistemas de
indización y clasificación automáticos para
Internet que permiten la búsqueda y la
navegación integradas, y contienen términos
de índice, adjuntos a números de
clasificación, en alemán, inglés y francés.
Un hecho muy importante para este
desarrollo de la CDU es el elemento del
Dublin Core titulado Materia, que sugiere
la utilización, de forma conjunta, de
encabezamientos de materias y sistemas de
clasificación y ha incluido la Clasificación
Decimal Universal. Así un instrumento
clásico como la CDU se presenta como un
novedoso instrumento para la clasificación y
organización de la información electrónica.Publicad
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