نتایج جستجو برای: classification feature

تعداد نتایج: 688105  

Journal: :Signal & Image Processing : An International Journal 2014

The Internet provides easy access to a kind of library resources. However, classification of documents from a large amount of data is still an issue and demands time and energy to find certain documents. Classification of similar documents in specific classes of data can reduce the time for searching the required data, particularly text documents. This is further facilitated by using Artificial...

With the fast increase of the documents, using Text Document Classification (TDC) methods has become a crucial matter. This paper presented a hybrid model of Invasive Weed Optimization (IWO) and Naive Bayes (NB) classifier (IWO-NB) for Feature Selection (FS) in order to reduce the big size of features space in TDC. TDC includes different actions such as text processing, feature extraction, form...

Journal: :journal of theoretical and applied vibration and acoustics 0
borhan beigzadeh biomechatronics and cognitive sciences research lab, school of mechanical engineering, iran university of science and technology, tehran, iran mojtaba belali koochesfahani biomechatronics and cognitive engineering research lab, school of mechanical engineering, iran university of science and technology

the concept of iranian traditional musical modes, namely dastgäh, is the basis for the traditional music system. the concept introduces seven dastgähs. it is not an easy process to distinguish these modes and such practice is commonly performed by an experienced person in this field. apparently, applying artificial intelligence to do such classification requires a combination of the basic infor...

Journal: :journal of medical signals and sensors 0

pathological changes within an organ can be reflected as proteomic patterns in biological fluids such as plasma, serum, and urine. the surface-enhanced laser desorption and ionization time-of-flight mass spectrometry (seldi-tof ms) has been used to generate proteomic profiles from biological fluids. mass spectrometry yields redundant noisy data that the most data points are irrelevant features ...

ایمانی, مریم, قاسمیان, حسن,

One of the most preprocessing steps before the classification of hyperspectral images is supervised feature extraction. Because obtaining the training samples is hard and time consuming, the number of available training samples is limited. We propose a supervised feature extraction method in this paper that is efficient in small sample size situation. The proposed method, which is called weight...

Feature extraction is a very important preprocessing step for classification of hyperspectral images. The linear discriminant analysis (LDA) method fails to work in small sample size situations. Moreover, LDA has poor efficiency for non-Gaussian data. LDA is optimized by a global criterion. Thus, it is not sufficiently flexible to cope with the multi-modal distributed data. We propose a new fea...

S. Patil V. Phalle

Anti-Friction Bearing (AFB) is a very important machine component and its unscheduled failure leads to cause of malfunction in wide range of rotating machinery which results in unexpected downtime and economic loss. In this paper, ensemble machine learning techniques are demonstrated for the detection of different AFB faults. Initially, statistical features were extracted from temporal vibratio...

Journal: :journal of advances in computer research 2016
mohammad reza mosavi mohammad khishe ehsan ebrahimi

due to the complex physical properties of the detected targets using sonar systems, identification and classification of the actual targets is among the most difficult and complex issues of this field. considering the characteristics of the detected targets and unique capabilities of the intelligent methods in classification of their dataset, these methods seem to be the proper choice for the t...

سادات حسنی, حدیثه, صمدزادگان, فرهاد,

Hyper spectral remote sensing imagery, due to its rich source of spectral information provides an efficient tool for ground classifications in complex geographical areas with similar classes. Referring to robustness of Support Vector Machines (SVMs) in high dimensional space, they are efficient tool for classification of hyper spectral imagery. However, there are two optimization issues which s...

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