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In this paper, we address the preparation of ecological datasets for data mining. We propose a new adaptive method for automatic dataset construction using Erblet transform, which can be seen as a non-uniform filter bank where the center frequency and the bandwidth of each filter match the ERB (Equivalent Rectangular Bandwidth) scale, followed by data quality assessment using a tonality index (TI)...
X-rays with photon having wavelength below 0.2–0.1 nm are generally used to produce X-ray images due to their high penetration ability. But photon counting statistics follows Poisson noise distribution which degrades quality of medical data (X-ray) represented by photon images. This Poisson noise can be reduced by increasing the dose of X-ray for production of X-ray image but it will harm patient...
In this paper we address a problem of how we can construct a multidimensional index efficiently in distortion-free subsequence matching. In the previous distortion-free subsequence matching, the index construction is a very time-consuming process since it generates a huge number of data subsequences to consider all possible positions and all possible query lengths. The real experimental results show...
Music documents retrieval system in most websites are useful for users who want to search sheet music which consists of chords, notes, or lyrics in a printable sheet format. With the growth of music repositories, music classification based on musical similarity can help users to find the same kind of songs. One important aspect to define music similarity measure is chord progression. In this paper,...
Threshold selection is the critical issue in image denoising. This paper deal with a new multiscale directional representation called the shearlet transform that has shown to represent specific classes of images with distributed discontinuities optimally. Techniques based on this transform for denoising using an efficient adaptive shrinkage threshold are presented. The shearlet transform not only...
This paper focuses on the multiple attribute decision making problems with the attribute values being numeric, interval and linguistic evaluations. The decision matrix is normalized by calculating the grey relation coefficients of the interval and linguistic attribute values to their corresponding positive ideal ones. Furthermore, a mathematical programming model is set up to figure out the attribute...
Palmprint based personal verification is an accepted biometric modality due to its reliability, ease of acquisition and user acceptance. This paper presents a novel palmprint based identification approach which draw on the textural information available on the palmprint by utilizing a combination of contourlet and non subsampled contourlet transforms. Center of the palm is computed using the distance...
The medial axis, also known as symmetry axis, is a special type of skeleton that has a number of interesting properties. It is a powerful tool in applications involving pattern recognition, image analysis, path planning and mesh generation, to name a few. Since the proposal and definition of the medial axis, in 1967, much effort has been done to develop fast and accurate methods for calculating the...
The MacWilliams identity for linear time-invariant convolutional codes that has recently been found by Gluesing-Luerssen and Schneider is proved concisely, and generalized to arbitrary group codes on graphs. A similar development yields a short, transparent proof of the dual sum-product update rule.
Source code metadata on a file-level granularity is too coarse for certain applications. But fine-grained metadata (e.g. line-by-line authorship) easily gets lost due to changes like merging, moving or copying code. Enabling metadata to survive code evolution provides valuable insights into program source code. This helps developers to understand the sources and opens up opportunities for advanced...
Methods for software testing based on finite state machines (FSMs) have been researched since the early 60's. Many of these methods are about generating a checking sequence from a given FSM which is an input sequence that determines whether an implementation of the FSM is faulty or correct. In this paper, we consider one of these methods, which constructs a checking sequence by reducing the problem...
This paper proposes a novel reversible digital watermarking algorithm by block linking. First the input image is decomposed by a reversible integer transform. The expandable values for data embedding is divided into blocks which are linked by index. The location map is avoided to increase the capacity for embedding. The experimental results show that our proposed method can reverse the marked image...
This paper presents a study of transforms method used in lossless text compression in order to preprocess the text by exploiting the inner redundancy of the source file. The transform methods are derived from the star (*) transform. LIPT, ILPT, NIT, and LIT applied to text files emphasize their positive effects on a set of test files picked up from the classical corpora of both English and Romanian...
Data Envelopmnet Analysis is used to measure the relative efficiency of a set of similar Decision Making Units. In case some inputs or outputs of these units can be grouped into some categories, Two-Level DEA model is applied. Kao [Alinearformulationofthetwo-levelDEAmodel, Omega 36 (2008) 958-962] proposed an approach to get a linear model from non-linear two-level model. In this paper we expand...
In this paper an improved procedure for the automatic recognition of built-up areas, using the so-called PANTEX index is presented. This index is based on analysis of image textural measures extracted using anisotropic rotation-invariant GLCM statistics. These measures may overestimate the built-up areas in case of presence of scattered vegetation having the same spatial pattern of settlements. In...
▪ We have analized not only the worth of a specific temporal pooling method but also its influence on different quality metrics ▪ Proper choice of the pooling method can significantly improve prediction capability of a video quality metric ▪ The best results → pooling methods which incorporate a high influence of most degraded part of a sequence on the observers judgement, as well as that observers...
Fast bit-reversal algorithms have been of strong interest for many decades, especially after Cooley and Tukey introduced their FFT implementation in 1965. Many recent algorithms, including FFTW try to avoid the bit-reversal all together by doing in-place algorithms within their FFTs. We therefore motivate our work by showing that for FFTs of up to 65.536 points, a minimally tuned Cooley-Tukey FFT...
By using method of fuzzy mathematics to quantitatively determine fuzzy relationship between samples, the fuzzy clustering analysis is able to reflect the world objectively and accurately. In this paper, combing the ideas of quotient space theory, hierarchical structure and fuzzy synthetic evaluation, a new model of fuzzy clustering analysis is proposed based on quotient space, which uses theory of...
With regard to group decision making (GDM) problems based on multigranularity interval linguistic, we propose a new consensus method for GDM. Firstly, we transform information of multigranularity interval linguistic into information of fuzzy set in basic linguistic term set, and aggregating these values we obtain group assessment value. Secondly, a consensus mechanism guide experts to adjust their...
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