نتایج جستجو برای: High fuzzy utility patters

تعداد نتایج: 2254586  

Nowadays high fuzzy utility based pattern mining is an emerging topic in data mining. It refers to discover all patterns having a high utility meeting a user-specified minimum high utility threshold. It comprises extracting patterns which are highly accessed in mobile web service sequences. Different from the traditional fuzzy approach, high fuzzy utility mining considers not only counts of mob...

2014
Jyothi Pillai O. P. Vyas Maybin K. Muyeba

Classical frequent itemset mining identifies frequent itemsets in transaction databases using only frequency of item occurrences, without considering utility of items. In many real world situations, utility of itemsets are based upon user’s perspective such as cost, profit or revenue and are of significant importance. Utility mining considers using utility factors in data mining tasks. Utility-...

2010
Cheng-Ping Lai Pau-Choo Chung Vincent S. Tseng

Utility mining is to find the itemsets in a transaction database with high utility values like profits. Although a number of algorithms on high utility mining have been proposed, they did not reflect the fuzzy degree of quantity and profit level for mined high utility itemsets, which are essential for decision making in various applications like stock control and sales analysis. In this paper, ...

Random utility models have been widely used in many diverse fields. Considering utility as a random variable opened many new analytical doors to researchers in explaining behavioral phenomena. Introducing and incorporating the random error term into the utility function had several reasons, including accounting for unobserved variables. This paper incorporates fuzziness into random utility mode...

2015
Wei-Ming Huang Guo-Cheng Lan Tzung-Pei Hong Ming-Chao Chiang

Fuzzy utility mining reflects fuzzy degrees of quantities and profits for high utility itemsets. In generally, transaction time is also concerned, and not all products sold are always on the shelf. Thus, in this paper we present an effective framework, which considers the transaction period of each product from the first transaction it appears to the last transaction in the whole database for m...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1389

abstract type-ii fuzzy logic has shown its superiority over traditional fuzzy logic when dealing with uncertainty. type-ii fuzzy logic controllers are however newer and more promising approaches that have been recently applied to various fields due to their significant contribution especially when the noise (as an important instance of uncertainty) emerges. during the design of type- i fuz...

‎In this paper we propose a method for computing approximations of solution of fuzzy fractional differential equations using fuzzy variational iteration method. Defining a fuzzy fractional derivative, we verify the utility of the method through two illustrative ‎examples.‎

Journal: :Journal of Japan Society for Fuzzy Theory and Systems 1999

Journal: :IEEE transactions on systems, man, and cybernetics. Part B, Cybernetics : a publication of the IEEE Systems, Man, and Cybernetics Society 2004
Philippe De Wilde

A decision maker is frequently confronted with fuzzy constraints, fuzzy utility maximization, and fuzziness about the state of competitors. In this paper we present a framework for fuzzy decision-making, using techniques from fuzzy logic, game theory, and micro-economics. In the first part, we study the rationality of fuzzy choice. We introduce fuzzy constraints, and show that this can easily b...

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