Temat: data mining - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A Fuzzy Logic Based Approach to Linguistic Summaries of Databases
Autorzy:: Kacprzyk, J.
Yager, R. R.
Zadrożny, S.
Powiązania:: https://bibliotekanauki.pl/articles/911154.pdf
Data publikacji:: 2000
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: logika rozmyta
baza danych
podsumowanie lingwistyczne
zgłębianie danych
fuzzy logic
linguistic summary
computing with words
data mining
fuzzy querying
Opis:: In this paper, we present basic ideas and perspectives related to the use of fuzzy logic for the derivation of linguistic summaries of data (databases). We concentrate on the issue of how to measure the goodness of a linguistic summary, and on how to embed data summarization within the fuzzy querying environment, for an effective and efficient implementation. In particular, we propose how to efficiently implement Kacprzyk and Yager's (2000) new quality indicators of linguistic summaries to derive summaries via Kacprzyk and Zadrozny's (1994; 1995a; 1995b; 1996) fuzzy querying add-on. Finally, we present an implementation for deriving linguistic summaries of a sales database at a computer retailer, and show how the linguistic summaries obtained can be useful for supporting decisions of the business owner.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2000, 10, 4; 813-834
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Neural methods of knowledge extraction
Autorzy:: Duch, W.
Adamczak, R.
Grąbczewski, K.
Jankowski, N.
Powiązania:: https://bibliotekanauki.pl/articles/206250.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: diagnostyka medyczna
optymalizacja
reguła logiczna
reguła rozmyta
wspomaganie decyzji
data mining
decision support
fuzzy rules
logical rules
medical diagnosis
optimization
Opis:: Contrary to the common opinion, neural networks may be used for knowledge extraction. Recently, a new methodology of logical rule extraction, optimization and application of rule-based systems has been described. C-MLP2LN algorithm, based on constrained multilayer perceptron network, is described here in details and the dynamics of a transition from neural to logical system illustrated. The algorithm handles real-valued features, determining appropriate linguistic variables or membership functions as a part of the rule extraction process. Initial rules are optimized by exploring the accuracy/simplicity tradeoff at the rule extraction stage and the one between reliability of rules and rejection rate at the optimization stage. Gaussian uncertainties of measurements are assumed during application of crisp logical rules, leading to "soft trapezoidal" membership functions and allowing to optimize the linguistic variables using gradient procedures. Comments are made on application of neural networks to knowledge discovery in the benchmark and real life problems.
Źródło:: Control and Cybernetics; 2000, 29, 4; 997-1017
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: A computer-based system for objective studies of human psychomotorics
Autorzy:: Ossowski, A.
Smyrnova, J.
Powiązania:: https://bibliotekanauki.pl/articles/332896.pdf
Data publikacji:: 2002
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: test psychologiczny
psychoakustyki
czas reakcji
eksploracja danych
system komputerowy
psychological test
psychomotorics
psychoacoustics
reaction time
data mining
computer system
Opis:: Firstly the idea of objective psychological tests and their characteristics related to various features of human psychophysiology are introduced. Examples of objective tests are given. Next application of data mining algorithms to analyse data obtained from different tests are outlined. The general concept of a computer system for objective psychological studies of psychomotoric processes in humans is then described. Finally the possibility of implementation of the system in medical and psychoacoustical studies is pointed out.
Źródło:: Journal of Medical Informatics & Technologies; 2002, 3; MI71-79
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Coal heritage from Southern Belgium: A preservation and computerized management of coal concessions data
Autorzy:: Devleeschouwer, X.
Decupere, B.
Delforge, X.
Roche, M.
Hance, L.
Powiązania:: https://bibliotekanauki.pl/articles/1204907.pdf
Data publikacji:: 2002
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: coal mines
mining data
urban environment
information system
Belgium
Opis:: From the past centuries until the seventies, underground coal mining activities have played an important role in the suburban development of western European coal basins. After closure of collieries, the impact of this activity on a fast growing urban environment is still obvious and cannot be underestimated. Changes in hydrological regime, water and soil pollution, sudden collapse or ground instability are risk factors not to be minimized. Old mining and related industrial sites have now to be revalidated and underground infrastructures and city planners and local authorities cannot ignore mineshafts. This is only possible if the huge amount of available mining data is preserved and their information computerized. These mining data represent an essential component of urban geology that must be integrated in an easy access geographic information system. The old coal districts in southern Belgium serves as a case study for developing an appropriate methodology.
Źródło:: Polish Geological Institute Special Papers; 2002, 7; 79-86
1507-9791
Pojawia się w:: Polish Geological Institute Special Papers
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Computer-Intensive Methods in Traffic Safety Research
Autorzy:: Harold, S.
Powiązania:: https://bibliotekanauki.pl/articles/90673.pdf
Data publikacji:: 2002
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: data analysis
errors
screening
missing values
unknown values
imputation
data mining
analiza komputerowa
komputer
archiwa
bezpieczeństwo ruchu drogowego
analiza danych
Opis:: The analysis of traffic safety data archives has improved markedly with the development of procedures that are heavily dependent upon computers. Three such procedures are described here. The first procedure involves using computers to assist in the identification and correction of invalid data. The second procedure makes greater computational demands, and involves using computerized algorithms to fill in the ‘‘gaps’’ that typically occur in archival data when information regarding key variables is not available. The third and most computer-intensive procedure involves using data mining techniques to search archives for interesting and important relationships between variables. These procedures are illustrated using examples from data archives that describe the characteristics of traffic accidents in the USA and Australia.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2002, 8, 3; 353-363
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Practical aspects of computer-based clinical decision support systems
Autorzy:: Ossowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/332898.pdf
Data publikacji:: 2002
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: zasada diagnostyczna
reguła w bazie danych
eksploracja danych
optymalna klasyfikacja
komputerowy system diagnostyczny
diagnostic principle
rule in database
data mining
optimal classification
computer-based diagnostic system
Opis:: The general problem of computer-based clinical decision support systems is considered. A class of rules in medical databases characteristic for therapeutic decisions has been distinguished. The necessity of application of a complete set of data for learning computerised systems of decision support has been pointed out. Rough set approach is applied to the analysis of the problem. An illustrative example of application of the presented results in the treatment of endometrial and breast cancer is given.
Źródło:: Journal of Medical Informatics & Technologies; 2002, 3; MI61-69
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Using reporting and data mining techniques to improve knowledge of subscribers; applications to customer profiling and fraud management
Autorzy:: Amat, J.-L.
Powiązania:: https://bibliotekanauki.pl/articles/309287.pdf
Data publikacji:: 2002
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: data mining
customer profiling
OLAP reporting
fraud management
CRM
real-time marketing
Opis:: One of the main issues of operators today is to be able not only to store and manage the huge amount of data generated by the applications and customer contact points, but also to give value to these data. But this implies using tools for storing the data, to manage it, look at it, understand it, exploit it, generate actions such as marketing campaigns. It is therefore obvious that using one tool for each of these functions will discuss here the technical issues involved and show how we turned them into an easy-to-use solution for business users.
Źródło:: Journal of Telecommunications and Information Technology; 2002, 3; 11-16
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Briefly on the GUHA method of data mining
Autorzy:: Hajek, P.
Powiązania:: https://bibliotekanauki.pl/articles/307807.pdf
Data publikacji:: 2003
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: GUHA method
data mining
exploratory data analysis
Opis:: The paper gives brief, user-oriented, information on the GUHA method.
Źródło:: Journal of Telecommunications and Information Technology; 2003, 3; 112-114
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Contextual probability
Autorzy:: Wang, H.
Powiązania:: https://bibliotekanauki.pl/articles/307791.pdf
Data publikacji:: 2003
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: mathematical foundations
knowledge representation
machine learning
uncertainty
data mining
Opis:: In this paper we present a new probability function G that generalizes the classical probability function. A mass function is an assignment of basic probability to some context (events, propositions). It represents the strength of support for some contexts in a domain. A context is a subset of the basic elements of interest in a domain - the frame of discernment. It is a medium to carry the "probabilistic" knowledge about a domain. The G function is defined in terms of a mass function under various contexts. G is shown to be a probability function satisfying the axioms of probability. Therefore G has all the properties attributed to a probability function. If the mass function is obtained from probability function by normalization, then G is shown to be a linear function of probability distribution and a linear function of probability. With this relationship we can estimate probability distribution from probabilistic knowledge carried in some contexts without any model assumption.
Źródło:: Journal of Telecommunications and Information Technology; 2003, 3; 92-97
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Data mining and complex telecommunications problems modeling
Autorzy:: Granat, J.
Powiązania:: https://bibliotekanauki.pl/articles/307805.pdf
Data publikacji:: 2003
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: decision support system
telecommunications
dynamic information systems
temporal data mining
Opis:: The telecommunications operators have to manage one of the most complex systems developed by human beings. Moreover, the new technological developments, the convergence of voice and data networks and the broad range of services still increase this complexity. Such complex object as telecommunication network requires advanced software tools for their planning and management. Telecommunications operators collect large volumes of the data in various databases. They realize that the knowledge in these huge databases might significantly improve various organizational strategic and operational decisions. However, this knowledge is not given explicitly, it is hidden in data. Advanced methods and algorithms are being developed for knowledge extracting. In this paper we will focus on using data mining for solving selected problems in telecommunication industry. We will provide a systematic overview of various telecommunications applications.
Źródło:: Journal of Telecommunications and Information Technology; 2003, 3; 115-120
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: Decisions algorithms and flow graphs; a rough set approach
Autorzy:: Pawlak, Z.
Powiązania:: https://bibliotekanauki.pl/articles/307789.pdf
Data publikacji:: 2003
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: rough sets
decision algorithms
flow graphs
data mining
Opis:: This paper concerns some relationship between Bayes' theorem and rough sets. It is revealed that any decision algorithm satisfies Bayes' theorem, without referring to either prior or posterior probabilities inherently associated with classical Bayesian methodology. This leads to a new simple form of this theorem, which results in new algorithms and applications. Besides, it is shown that with every decision algorithm a flow graph can be associated. Bayes' theorem can be viewed as a flow conservation rule of information flow in the graph. Moreover, to every flow graph the Euclidean space can be assigned. Points of the space represent decisions specified by the decision algorithm, and distance between points depicts distance between decisions in the decision algorithm.
Źródło:: Journal of Telecommunications and Information Technology; 2003, 3; 98-101
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: The use of quantitative association rules in cellular network planning
Autorzy:: Okoniewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/307803.pdf
Data publikacji:: 2003
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: data mining
quantitative association rules
knowledge discovery process
cellular network planning
Opis:: This paper describes the problem of planning cellular network base stations with optimization to traffic requirements. This research problem was a main incentive to add some development to the theory of association rules. The new form of quantitative and multi-dimensional association rules, unlike other approaches, does not require the discretization of real value attributes as a preprocessing step. They are discovered with data driven algorithm that gives precise and complete results and has polynomial complexity for a given dimensionality.
Źródło:: Journal of Telecommunications and Information Technology; 2003, 3; 121-124
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

Tytuł:: An alternative extension of the k-means algorithm for clustering categorical data
Autorzy:: San, O. M.
Huynh, V. N.
Nakamori, Y.
Powiązania:: https://bibliotekanauki.pl/articles/907406.pdf
Data publikacji:: 2004
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: analiza skupień
dane kategoryczne
eksploracja danych
cluster analysis
categorical data
data mining
Opis:: Most of the earlier work on clustering has mainly been focused on numerical data whose inherent geometric properties can be exploited to naturally define distance functions between data points. Recently, the problem of clustering categorical data has started drawing interest. However, the computational cost makes most of the previous algorithms unacceptable for clustering very large databases. The k-means algorithm is well known for its efficiency in this respect. At the same time, working only on numerical data prohibits them from being used for clustering categorical data. The main contribution of this paper is to show how to apply the notion of "cluster centers'' on a dataset of categorical objects and how to use this notion for formulating the clustering problem of categorical objects as a partitioning problem. Finally, a k-means-like algorithm for clustering categorical data is introduced. The clustering performance of the algorithm is demonstrated with two well-known data sets, namely, soybean disease and nursery databases.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2004, 14, 2; 241-247
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

Tytuł:: Data analysis and flow graphs
Autorzy:: Pawlak, Z.
Powiązania:: https://bibliotekanauki.pl/articles/308986.pdf
Data publikacji:: 2004
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: data mining
data independence
flow graph
Bayes' rule
Opis:: In this paper we present a new approach to data analysis based on flow distribution study in a flow network. Branches of the flow graph are interpreted as decision rules, whereas the flow graph is supposed to describe a decision algorithm. We propose to model decision processes as flow graphs and analyze decisions in terms of flow spreading in the graph.
Źródło:: Journal of Telecommunications and Information Technology; 2004, 3; 18-22
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 15.

Tytuł:: Problems of medical data mining
Autorzy:: Szpunar-Huk, E.
Powiązania:: https://bibliotekanauki.pl/articles/951662.pdf
Data publikacji:: 2004
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: wybieranie danych
medyczne przetwarzanie danych
zestawy reguł
data mining
medical data processing
rule sets
Opis:: The article discusses the main problems connected to the specificity of medical aspects, especially as concerns the quality and means of selection of data and tools used for constructing classification systems. Special attention is devoted to the risks inherent in direct application of classical knowledge extraction algorithms (such as the algorithms for constructing decision trees) to medical data. The article describes some attempts at solving emerging problems and points to the need for analysis of classifiers with regard to more than just their potential redundancy and mutual exclusion. The article also proposes two functions, useful for analysing rule sets with focus on data semantics.
Źródło:: Journal of Medical Informatics & Technologies; 2004, 7; KB91-98
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "data mining" wg kryterium: Temat

Źródło danych

Dostawca treści

Podbaza

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język