31 research outputs found
Agente para recuperación automática de información en diversos entornos basado en técnicas de inteligencia computacional
Falta palabras clavesLa presente tesis se enmarca en la problemática de la recuperación de información, entendiendo por recuperación de información la búsqueda dentro de una colección de documentos diversos, de forma automática, de todos los documentos relacionados, con un cierto grado de relevancia, a partir de una consulta formulada por un usuario. En particular, expone un novedoso sistema, basado en lógica difusa, para la implementación de agentes inteligentes para resolver problemas reales de recuperación de información en diversos entornos. Los métodos de recuperación de información y de asignación de pesos desarrollados dan lugar a las publicaciones que se adjuntan en el compendio de esta tesis; y su aplicación propicia una entrada en la oficina de registro de la propiedad intelectual. En los trabajos de colaboración con empresa relacionados en el Capítulo 5 se han implementado diversos prototipos de agentes inteligentes aplicando las técnicas de inteligencia computacional que sustentan los métodos de recuperación de información desarrollados, con la finalidad de crear agentes inteligentes para resolución de problemas reales en los que se necesita realizar una recuperación de información. Los agentes inteligentes desarrollados utilizan el método de recuperación de información, el método de asignación de pesos, y la estructura de almacenamiento de información desarrollada en las publicaciones que forman el compendio de esta tesis. En dichas publicaciones se justifica el buen funcionamiento de estos métodos, así como la mejora de rendimiento en la recuperación de información contenida en portales web frente al modelo de espacio vectorial (Vector Space Model, VSM) y el método de asignación de pesos tf-idf
A Method for the Access to the Contents in a Set of Knowledge Using a Fuzzy Logic Based Intelligent Agent
This paper proposes a method for the classification of
the contents in a set of knowledge in order to answer to
user consultations using natural language. The system is
based on a fuzzy logic engine, which takes advantage of its
flexibility for managing sets of accumulated knowledge.
These sets can be built in hierarchic levels by a tree
structure. A method of consultation based on a fuzzy logic
application provided with an interface that one may
interact with in natural language is also proposed. The
eventual aim of this system is the implementation of an
intelligent agent to manage the information contained in
an internet portalMinisterio de Educación y Ciencia DPI2006-15467-C02-0
A Fuzzy Logic intelligent agent for Information Extraction: Introducing a new Fuzzy Logic-based term weighting scheme
In this paper, we propose a novel method for Information Extraction (IE) in a set of knowledge in order to
answer to user consultations using natural language. The system is based on a Fuzzy Logic engine, which
takes advantage of its flexibility for managing sets of accumulated knowledge. These sets may be built in
hierarchic levels by a tree structure. The aim of this system is to design and implement an intelligent
agent to manage any set of knowledge where information is abundant, vague or imprecise. The method
was applied to the case of a major university web portal, University of Seville web portal, which contains
a huge amount of information. Besides, we also propose a novel method for term weighting (TW). This
method also is based on Fuzzy Logic, and replaces the classical TF–IDF method, usually used for TW,
for its flexibility
Information Extraction in a Set of Knowledge Using a Fuzzy Logic Based Intelligent Agent
A method for Information Extraction (IE) in a set of knowledge is
proposed in this paper in order to answer to user consultations using natural
language. The system is based on a fuzzy logic engine, which takes advantage
of its flexibility for managing sets of accumulated knowledge. These sets can be
built in hierarchic levels by a tree structure. A method of consultation based on
a fuzzy logic application provided with an interface that one may interact with
in natural language is also proposed. The eventual aim of this system is the
implementation of an intelligent agent to manage the information contained in
an internet portal
SABIO: Soft Agent for Extended Information Retrieval
In the current study, an integrated system called SABIO is presented. The current system
applies Information Retrieval (IR) techniques developed for collections of textual documents to nontextual
corpa. SABIO integrates a fuzzy logic-based procedure for IR. Its search algorithm improves
the IR efficiency and decreases the computational burden by using a fuzzy logic-based procedure for
IR. This procedure is integrated in a flexible and fault-tolerant, human-reasoning-based search
algorithm. The Accumulated Knowledge Set (AKS) of the system is sorted in a hierarchic
multilevel tree-structure-like ontology. The objects in the AKS are represented using a novel
human-reasoning-based-method. This representation takes into account the occurrence of related
terms. The system uses a novel fuzzy logic-based term-weighting (TW) method. The developed fuzzy
logic method improves the classical term frequency–inverse document frequency (TF=IDF) method,
generally used for TW. The abovementioned system is the core of a wizard for search into the website
of the University of Seville, www.us.es, which is currently in testing
Using Industrial Standards on PLC Programming Learning
In this paper, we review aspects relevant to
industrial standards related to PLC programming: IEC
61131, IEC 61499 and a work about safety developed by the
PLCOpen organization based on IEC 61508. We propose to
use these standards in PLC learning to fix a common knowhow
that allows one to reduce the gap between industry and
education, and between different professionals. We show the
application scope of these standards by analyzing the IEC
61131 limits. The IEC 61499 can be introduced in distributed
control systems and in complex centralized systems with
multiple operating modes. In critical applications, like safety
functions, where functional safety is required, the IEC 61508
is a reference model
DTE_SECURITY: herramienta para la distribución segura y limitada de documentos electrónicos
DTE_SECURITY es una herramienta diseñada específicamente para distribuir de forma segura
y limitada libros, apuntes y manuales, generados en cualquier procesador de textos. En realidad,
se trata de un plug-in que se inserta y amplía las funciones de las herramientas de edición
electrónica de ADOBE: ACROBAT y ACROREAD. El objetivo que se persigue es aumentar la
confianza de los autores en la publicación electrónica, mejorando su seguridad y ampliando las
funciones que restringen el acceso a los mismos (consulta limitada, fechas de caducidad, redes
de trabajo, usuarios registrados, ...
In-field hyperspectral imaging dataset of Manzanilla and Gordal olive varieties throughout the season
Because spectral technology has exhibited benefits in food-related applications, an increasing amount of effort is being dedicated to develop new food-related spectral technologies. In recent years, the use of remote sensing or unmanned aerial vehicles for precision agriculture has increased. As spectral technology continues to improve, portable spectral devices become available in the market, offering the possibility of realising in-field monitoring. This study demonstrates hyperspectral imaging and spectral olive signatures of the Manzanilla and Gordal cultivars analysed throughout the table-olive season from May to September. The data were acquired using an in-field technique and sampled via a non-destructive approach. The olives were monitored periodically during the season using a hyperspectral camera. A white reference was used to normalise the illumination variability in the spectra. The acquired data were saved in files named raw, normalised, and processed data. The normalised data were calculated by the sensor by correcting the white and black levels using the acquired reflectance values. The olive spectral signature of the images is saved in the processed data files. The images were labelled and processed using an algorithm to retrieve the olive spectral signatures. The results were stored as a chart with 204 columns and ‘n’ rows. Each row represents the pixel of an olive in the image, and the columns contain the reflectance information at that specific band. These data provide information about two olive cultivars during the season, which can be used for various research purposes. Statistical and artificial intelligence approaches correlate spectral signatures with olive characteristics such as growth level, organoleptic properties, or even cultivar classification.Hermanos Donaire Ibáñez Agrícola, SC and the Regulatory Council of the PGI Manzanilla and Gordal Olives from Sevill
Banco hidráulico para el ensayo de pequeños sensores de caudal
El presente artículo muestra un pequeño banco hidráulico “portátil”, completamente
funcional de forma autónoma, que introducirá al alumno en las medidas con fluidos
ensayando con sensores de caudal de pequeño tamaño