نتایج جستجو برای: hidden rules
تعداد نتایج: 190990 فیلتر نتایج به سال:
Extracting rules from RBFs is not a trivial task because of nonlinear functions or high input dimensionality. In such cases, some of the hidden units of the RBF network have a tendency to be “shared” across several output classes or even may not contribute to any output class. To address this we have developed an algorithm called LREX (for Local Rule EXtraction) which tackles these issues by ex...
My PhD research focuses on Text Mining (TM), one major school in Knowledge Discovery in Data (KDD), and in particular the task of classification/categorization of documents using novel algorithms for the identification of hidden patterns within these documents. Two significant techniques of Data Mining (DM), another well-known major school in KDD, will be utilized to support the research: Assoc...
Background: In recent years the growing trend of colon cancer has revealed that we need some safe and new methods to detect and control this disease. Data mining is one of these methods, one of its most important applications is the discovery of hidden patterns between data in a large database. In this study, we explore and discover unknown patterns in a real colon cancer data set. Methods: In...
background : breast cancer survival has been analyzed by many standard data mining algorithms. a group of these algorithms belonged to the decision tree category. ability of the decision tree algorithms in terms of visualizing and formulating of hidden patterns among study variables were main reasons to apply an algorithm from the decision tree category in the current study that has not studied...
this paper presents a data envelopment analysis (dea) model combined with bootstrapping to assess performance of one of the data mining algorithms. we applied a two-step process for performance productivity analysis of insurance branches within a case study. first, using a dea model, the study analyzes the productivity of eighteen decision-making units (dmus). using a malmquist index, dea deter...
When individuals have little knowledge about a causal system and must make causal inferences based on vague and imperfect information, their judgments often deviate from the normative prescription of classical probability. Previously, many researchers have dealt with violations of normative rules by elaborating causal Bayesian networks through the inclusion of hidden variables. While these mode...
This paper presents a data envelopment analysis (DEA) model combined with Bootstrapping to assess performance of one of the Data mining Algorithms. We applied a two-step process for performance productivity analysis of insurance branches within a case study. First, using a DEA model, the study analyzes the productivity of eighteen decision-making units (DMUs). Using a Malmquist index, DEA deter...
Complex sequencing rules observed in birdsongs provide an opportunity to investigate the neural mechanism for generating complex sequential behaviors. To relate the findings from studying birdsongs to other sequential behaviors such as human speech and musical performance, it is crucial to characterize the statistical properties of the sequencing rules in birdsongs. However, the properties of t...
An algorithm for extracting rules from a standard three-layer feedforward neural network is proposed. The trained network is first pruned not only to remove redundant connections in the network but, more important, to detect the relevant inputs. The algorithm generates rules from the pruned network by considering only a small number of activation values at the hidden units. If the number of inp...
The aim of this field study was to investigate the hidden curriculum of school rules delimited to the moral construction of „the good pupil‟ embedded in the system of school rules in two primary schools. According to the findings, the rule system mediates a moral construction of the good pupil to the children, and this actually includes two constructions: the benevolent fellow buddy and the wel...
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