نتایج جستجو برای: means خوشه بندی fuzzy c

تعداد نتایج: 1521599  

2014
Jingfeng Yan

Middle spatial resolution multi-spectral remote sensing image is a kind of color image with low contrast, fuzzy boundaries and informative features. In view of these features, the fuzzy C-means clustering algorithm is an ideal choice for image segmentation. However, fuzzy C-means clustering algorithm requires a pre-specified number of clusters and costs large computation time, which is easy to ...

Journal: :Inf. Sci. 2014
Marzie Zarinbal Mohammad Hossein Fazel Zarandi I. Burhan Türksen

Pattern recognition is a collection of computer techniques to classify various observations into different clusters of similar attributes in either supervised or unsupervised manner. Application of fuzzy logic to unsupervised classification or clustering methods has resulted in many wildly used techniques such as fuzzy c-means (FCM) method. However, when the observations are too noisy, the perf...

2001
Fusheng Yu Juan Tang Ruiqiong Cai

Horizontal collaborative clustering is such a clustering method that carries clustering on one data set describing a pattern set in one feature space with collaborative introducing of outer partition information obtained by clustering on another data set but describing the same pattern set in another feature space. In order to implement the collaborative clustering, horizontal collaborative fuz...

2011
Ruslan Miniakhmetov

Many data sets to be clustered are stored in relational databases. Having a clusterization algorithm implemented in SQL provides easier clusterization inside a relational DBMS than outside with some alternative tools. In this paper we propose Fuzzy c-Means clustering algorithm adapted for PostgreSQL open-source relational DBMS.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده مهندسی برق و کامپیوتر 1391

در این پایان نامه، از دو الگوریتم خوشه بندی فازی (fcm) و خوشه بندی کاهشی (subtractive) برای خوشه بندی بردارهای ویژگی در سیستم شناسایی رفتار انسان در ویدئوها استفاده شده است. روش های اخیر طبقه بندی رفتار انسان دنباله های ویدئو را با استفاده از مدل کیفی از کلمات مکانی-زمانی نمایش داده اند که نتایج موفقی در طبقه بندی شی و صحنه داشته اند. codebook معمولا با استفاده از الگوریتم خوشه بندی k-means ب...

2012
Kwang-Baek Kim Doo Heon Song Jae-Hyun Cho

In general, road lane detection from a traffic surveillance camera is done by the analysis of geometric shapes of the road. Thus, Hough transform or B-snake technology is preferred to intelligent pattern matching or machine learning such as neural network. However, we insist that the feasibility of using intelligent technique in this area is quite undervalued. In this paper, we first divide the...

2012
A. H. Hadjahmadi M. M. Homayounpour S. M. Ahadi

Nowadays, the Fuzzy C-Means method has become one of the most popular clustering methods based on minimization of a criterion function. However, the performance of this clustering algorithm may be significantly degraded in the presence of noise. This paper presents a robust clustering algorithm called Bilateral Weighted Fuzzy CMeans (BWFCM). We used a new objective function that uses some kinds...

Journal: :IJFSA 2011
Roland Winkler Frank Klawonn Rudolf Kruse

High dimensions have a devastating effect on the FCM algorithm and similar algorithms. One effect is that the prototypes run into the centre of gravity of the entire data set. The objective function must have a local minimum in the centre of gravity that causes FCM’s behaviour. In this paper, examine this problem. This paper answers the following questions: How many dimensions are necessary to ...

2002
Dat Tran Michael Wagner

In speaker verification, a claimed speaker’s score is computed to accept or reject the speaker claim. Most of the current normalisation methods compute the score as the ratio of the claimed speaker’s and the impostors’ likelihood functions. Based on analysing false acceptance error occured by the current methods, we propose a fuzzy c-means clusteringbased normalisation method to find a better s...

2002
JAMES C. BEZDEK ROBERT EHRLICH

nThis paper transmits a FORTRAN-IV coding of the fuzzy c-means (FCM) clustering program. The FCM program is applicable to a wide variety of geostatistical data analysis problems. This program generates fuzzy partitions and prototypes for any set of numerical data. These partitions are useful for corroborating known substructures or suggesting substructure in unexplored data. The clustering crit...

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