scholarly journals Hand Gesture recognition and classification by Discriminant and Principal Component Analysis using Machine Learning techniques

2012 ◽  
Vol 1 (9) ◽  
Author(s):  
Sauvik Das ◽  
Souvik Kundu ◽  
Rick Pandey ◽  
Rahul Ghosh ◽  
Rajesh Bag ◽  
...  
Keyword(s):  
Machine Learning ◽  
Principal Component Analysis ◽  
Gesture Recognition ◽  
Principal Component ◽  
Component Analysis ◽  
Hand Gesture Recognition ◽  
Machine Learning Techniques ◽  
Hand Gesture ◽  
Learning Techniques

scholarly journals Machine learning techniques to derive bioclimatic classifications for Colombia

2021 ◽  
Author(s):  
Richard Rios ◽  
Elkin A. Noguera-Urbano ◽  
Jairo Espinosa ◽  
Jose Manuael Ochoa
Keyword(s):  
Machine Learning ◽  
Principal Component Analysis ◽  
Logistic Regression ◽  
Regression Models ◽  
Principal Component ◽  
Component Analysis ◽  
Machine Learning Techniques ◽  
Study Region ◽  
Logistic Regression Models ◽  
Learning Techniques

Bioclimatic classifications seek to divide a study region into geographic areas with similar bioclimatic characteristics. In this study we proposed two bioclimatic classifications for Colombia using machine learning techniques. We firstly characterized the precipitation space of Colombia using principal component analysis. Based on Lang classification, we then projected all background sites in the precipitation space with their corresponding categories. We sequentially fit logistic regression models to re-classify all background sites in the precipitation space with six redefined Lang categories. New categories were the used to define a new modified Lang and Caldas-Lang classifications.

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