Clustering algorithms

In recent years, landslides are taking place very seriously, and tend to increase in both scope and scale, threatening people's lives and properties. Therefore, timely detection of landslide areas is extremely important to minimize damage. In this paper, an improved algorithm for partitioning data with reliability problems using multiple fuzzifiers named as TSSFC is introduced.

9p viengfa 28-10-2024 1 1   Download

This paper introduces a new clustering technique based on granular computing. In tradional clustering algorithms, the integration of the high shaping capability of the existing datasets becomes fussy which in turn results in inferior functioning.

8p viling 11-10-2024 1 0   Download

This study aims to evaluate the effectiveness of k-means and two-step cluster methods. Subsequently, the two-step cluster method and GIS are applied to analyze the traffic accident data sets from 2015 to 2017 in Hanoi, Vietnam.

15p vibecca 01-10-2024 0 0   Download

The dissertation has four chapters: Chapter 1 - Background Materials; Chapter 2 - Analysis of an Algorithm in Indefinite Quadratic Programming; Chapter 3 - Qualitative Properties of the Minimum Sum-of-Squares Clustering Problem; Chapter 4 - Some Incremental Algorithms for the Clustering Problem.

142p armyofthedead 23-06-2021 32 2   Download

Objectives: The main objective of the dissertation is to research and develop fuzzy clustering techniques on remote sensing image data in order to improve accuracy and improve clustering quality of clustering algorithms.

162p armyofthedead 23-06-2021 23 3   Download

To improve the clustering task on high dimensional data sets, the distance based k-means algorithm is proposed. The proposed algorithm is tested using eighteen sets of normal and non-normal multivariate simulation data under various combinations.

8p tohitohi 22-05-2020 16 0   Download

Bài giảng Khai mở dữ liệu: Giải thuật gom cụm (Clustering algorithms) của Đỗ Thanh Nghị giới thiệu về clustering, Hierarchical clustering, K-Means, kết luận và hướng phát triển. Bài giảng phục vụ cho các bạn quan tâm tới lĩnh vực này.

43p maiyeumaiyeu27 10-01-2017 85 7   Download

Lecture Algorithm design - Chapter 4: Greedy Algorithms II include all of the following: Dijkstra's algorithm; minimum spanning trees; Prim, Kruskal, Boruvka; single-link clustering; min-cost arborescences.

64p youcanletgo_03 14-01-2016 47 3   Download

Special issue paper PAR-3D-BLAST: A parallel tool for searching and aligning protein structures present a parallel tool, parallel 3D-BLAST (PAR-  3D-BLAST), which lists the similar structures to the query protein. Each protein in the result list has a  structural similarity score and an alignment to the query structure. The presented tool is implemented to fit  both the standalone multi-core computers and clusters of multi-core nodes. The achieved speedup is linear  and scalable.

10p ducla78 30-07-2015 38 2   Download

Creates nested clusters Agglomerative clustering algorithms vary in terms of how the proximity of two clusters are computed MIN (single link): susceptible to noise/outliers MAX/GROUP AVERAGE:  may not work well with non-globular clusters CURE algorithm tries to handle both problems Often starts with a proximity matrix A type of graph-based algorithm

37p trinh02 18-01-2013 49 5   Download

Finding groups of objects such that the objects in a group will be similar (or related) to one another and different from (or unrelated to) the objects in other groups. Understanding Group related documents for browsing, group genes and proteins that have similar functionality, or group stocks with similar price fluctuations Summarization Reduce the size of large data sets

104p trinh02 18-01-2013 59 7   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Cross-Layer Design of an Energy-Efficient Cluster Formation Algorithm with Carrier-Sensing Multiple Access for Wireless Sensor Networks

14p sting11 10-03-2012 37 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Stabilizing Algorithm for Clustering of Line Networks

10p sting10 24-02-2012 34 3   Download

Tuyển tập các báo cáo nghiên cứu khoa học ngành toán học được đăng trên tạp chí toán học quốc tế đề tài: A novel algorithm to form stable clusters in vehicular ad hoc networks on highways

33p dauphong11 04-02-2012 64 8   Download

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí y học Molecular Biology cung cấp cho các bạn kiến thức về ngành sinh học đề tài: Gravitation field algorithm and its application in gene cluster...

11p hoami_2511 21-10-2011 48 5   Download

Assume that gi (x) = 1 (hence gk (x) = 0, k = i), update the expert i based on output error. Update gating network so that gi (x) is even closer to unity. Alternatively, a batch training method can be adopted: 1. Apply a clustering algorithm to cluster the set of training samples into n clusters. Use the membership information to train the gating network. 2. Assign each cluster to an expert module and train the corresponding expert module. 3. Fine-tune the performance using gradient-based learning. Note that the function of the gating network is to partition the feature...

20p longtuyenthon 26-01-2010 109 10   Download

We explore an approach to possibilistic fuzzy c-means clustering that avoids a severe drawback of the conventional approach, namely that the objective function is truly minimized only if all cluster centers are identical. Our approach is based on the idea that this undesired property can be avoided if we introduce a mutual repulsion of the clusters, so that they are forced away from each other. In our experiments we found that in this way we can combine the partitioning property of the probabilistic fuzzy c-means algorithm with the advantages of a possibilistic approach w.r.t.

7p ledung 13-03-2009 183 37   Download

Remote sensing can be used to support a wide range of applications in Earth’s land surface information management. Typical applications concern, e.g., the mapping of changes due to the effects of pollution and environmental degradation over different periods of time, thanks to the high frequency of coverage of the Earth surface by satellites.

11p ledung 13-03-2009 289 35   Download