scholarly journals Minimized Stock Forecasting Features Selection by Automatic Feature Extraction Method

2009 ◽  
Vol 19 (2) ◽  
pp. 206-211 ◽  
Author(s):  
Sang-Hong Lee ◽  
Joon-S. Lim
Author(s):  
Mohammad Subhi Al-batah

<p class="0abstract">In this paper, an automatic three-phase cervical cancer diagnosis system is employed which includes feature extraction, feature selection followed by classification. Firstly, the modified seed-based region growing (MSBRG) algorithm is implemented for automatic segmentation and feature extraction using 500 cervical cancer cells. Processes to obtain the threshold values and the initial seed location are carried out automatically using moving k-mean (MKM) algorithm and invariant moment techniques. Secondly, eight attribute evaluators are applied for selecting and ranking the features, which are Correlation-based Feature Selection, Classifier Attribute Evaluator, Correlation Attribute Evaluator, Gain Ratio, Info Gain, OneR, ReliefF, and Symmetrical Uncertainty. Finally, the classification is compared based on five classifiers: Decision Table, JRip, OneR, PART, and ZeroR. The performance of the classifiers is evaluated using 3 test options: the training percentage splits (50% to 98%), the full training data and the cross validation (2-fold to 10-fold). The experimental results prove the capability of the MSBRG algorithm as an automatic feature extraction method. Furthermore, this paper proves the ability of the ranked feature selection methods to select important features of a cervical cell, and favors the Decision Table as the best classifier for cervical cancer classification.</p>


2017 ◽  
Vol 19 (4) ◽  
pp. 2521-2533 ◽  
Author(s):  
Shunming Li ◽  
Jinrui Wang ◽  
Xingxing Jiang ◽  
Chun Cheng

2012 ◽  
Vol 170-173 ◽  
pp. 2995-2998
Author(s):  
Jian Wei Liu ◽  
Zhi Qiang Jiang ◽  
Hao Hu ◽  
Xin Yin

Distributing artificial targets on the object to be measured is a reliable and common method for achieving optimum target location and accurate correspondence among multi-view images, which are universally adopted in industrial photogrammetry applications. In this paper artificial circular un-coded targets and coded targets are used as reference points, an automatic and rapid algorithm for reference point detection is proposed. Targets are extracted from the images according to their size, shape, intensity , etc. An improved method to identify the ID of the coded target is proposed. The gray scale centroid algorithm is applied to get sub-pixel locations of both un-coded and coded targets. Practical examples show that the algorithm can identify and locate artificial targets in images quickly and accurately. It is robust to the change of projection angles and noise.


Sign in / Sign up

Export Citation Format

Share Document