Assigning documents to related categories is critical task which is used for effective document retrieval. Automatic text classification is the process of assigning new text document to the predefined categories based on its content. In this paper, we implemented and performed comparison of Naïve Bayes and Centroid-based algorithms for effective document categorization of English language text....

This paper proposed a methodology for Handwritten Bangla numerals Recognition using zone based Feature Extraction Techniques. Every numeral image is pre-processed, segmented and feature are Extracted from each zone. In this paper we present, three zone based feature extraction techniques which is namely: image Centroid zone(ICZ), zone centroid zone (ZCZ) and hybrid feature extraction techniques...

If T is a tree, then the weight of a vertex v in T is the number of vertices in a largest component of T − v. The centroid of a tree is the set of vertices of minimum weight. We show that if G is a separable graph then there is a unique block or cutvertex that contains the centroids of all spanning trees of G. We define this block or cutvertex to be the centroid of G. We show that the centroid ...

The ratio between the volume of the p-centroid body of a convex body K in Rn and the volume of K attains its minimum value if and only if K is an origin symmetric ellipsoid. This result, the Lp-Busemann-Petty centroid inequality, was recently proved by Lutwak, Yang and Zhang. In this paper we show that all the intrinsic volumes of the p-centroid body of K are convex functions of a time-like par...

The title compound, C(11)H(6)ClN(5)O(4)S, crystallized with two independent mol-ecules in the asymmetric unit. The benzene ring makes dihedral angles of 66.46 (8) and 85.77 (9)° with the mean plane of the purine ring in the two mol-ecules. In the crystal, inter-molecular π-π stacking inter-actions [centroid-centroid distance = 3.8968 (12) Å], C-Cl⋯π inter-actions [Cl⋯centroid = 3.2505 (10) Å, C...

In the title Schiff-base type compound, C(18)H(13)N(3)O(5), the central furan ring makes dihedral angles of 12.80 (7) and 51.43 (4)° with the terminal benzene rings. The dihedral angle between the benzene rings is 45.43 (3)°. In the crystal, C-H⋯O hydrogen bonds link the mol-ecules into layers parallel to (010). In addition, there are π-π stacking inter-actions within the layer [centroid-centro...

In wireless sensor networks (WSN) research area, node localization is one of the most important techniques. An improved Centroid localization algorithm is analyzed and an improved Centroid algorithm with selective anchor node localization algorithm (CSA) for WSN will proposed in this paper. The key point of the algorithm is the most discrepant estimation nodes are selected by the nearest refere...

Text classification/categorization (TC) is to assign new unlabeled natural language documents to the predefined thematic categories. Centroid-based classifier (CC) has been widely used for TC because of its simplicity and efficiency. However, it has also been long criticized for its relatively low classification accuracy compared with state-of-the-art classifiers such as support vector machines...

Music is one of the strongest inducers of emotion in humans. Melody, rhythm, and harmony provide the primary triggers, but what about timbre? Do the musical instruments have underlying emotional characters? For example, is the well-known melancholy sound of the English horn due to its timbre or to how composers use it? Though music emotion recognition has received a lot of attention, researcher...

PICACS (Pitch Curve Analysis and Composition System) is a software prototype inspired in part by study of Indian classical music. The primary motivation of the system is to facilitate analysis, composition, and convincing computer rendering of music that is characterized by detailed, expressive shaping of the continuum between scale steps. The system creates models of pitch, amplitude, and spec...