knowing the fact that the main weakness of the most standard methods including k-means and hierarchical data clustering is their sensitivity to initialization and trapping to local minima, this paper proposes a modification of convex data clustering  in which there is no need to  be peculiar about how to select initial values. due to properly converting the task of optimization to an equivalent...

Objective There is a general tendency toward direct marketing these days. Therefore, instead of designing advertisement and marketing strategies for all the customers in the market, it is recommended to classify the customers based on clustering techniques and then design specific strategies accordingly. This will reduce marketing and advertisement expenses, increase sale department efficientl...

introduction and aims: previous reports show a high proportion of young crc patients in iran. in this study we aim to look for the clustering of colorectal cancer in families of a series of crc patients from iran. materials and methods: the family history of cancer is traced in 449 crc patients of which 112 were 45 years or younger and 337 were older than 45years at time of diagnosis. the patie...

This article demonstrates effective techniques for component/part family formation problem in the vicinity of Cellular Manufacturing Systems (CMS). Past investigations reported that part family formation techniques are typically grounded on production flow analysis (PFA) which largely considers operational requirements, sequences and time. Part coding analysis (PCA) is merely counted in cellula...

search pointers organize the main part of the application on the internet. however, because of information management hardware, high volume of data and word similarities in different fields the most answers to the user s’ questions aren`t correct. so the web graph clustering and cluster placement in corresponding answers helps user to achieve his or her intended results. community (web communit...

Group technology (GT) is a useful way to increase productivity with high quality in flexible manufacturing systems. Cell formation (CF) is a key step in GT. It is used to design a good cellular manufacturing system that uses the similarity measure between parts and machines so that it can identify part families and machine groups. Recently, fuzzy clustering has been applied in GT because the fu...

The C-terminal 95 kDa fragment of some isoforms of vertebrate agrins is sufficient to induce clustering of acetylcholine receptors but despite two decades of intense agrin research very little is known about the function of the other isoforms and the function of the larger, N-terminal part of agrins that is common to all isoforms. Since the N-terminal part of agrins contains several follistatin...