Astronomy & Space Sciences

Title :

Various machine leaning algorithms for earth observation data processing

Area of research :

Astronomy & Space Sciences

Focus area :

Machine Learning

Contact info :


Executive Summary :

Artificial Neural networks (ANN) is a generic name for a large class of machine learning algorithms, most of them are trained with an algorithm called back propagation. In the late eighties, early to mid-nineties, dominating algorithm in neural nets was fully connected neural networks. These types of networks have a large number of parameters, and so do not scale well. But convolutional neural networks (CNN) are not considered to be fully connected neural nets. CNNs have convolution and pooling layers, whereas ANN have only fully connected layers, which is a key difference. Moreover, there are many other parameters which can make difference like number of layers, kernel size, learning rate etc. While applying Possibilistic c-Means (PCM) fuzzy based classifier homogeneity within class was less while observing learning based classifiers homogeneity was found more. Best class identification with respect to homogeneity within class was found in CNN output, as shown in the figure. With this it gives a path to explore various deep leaning algorithms in various applications of earth observation data like; selflearning based classification, prediction, multi-sensor temporal data in crop/forest species identification, remote sensing time series data analysis.


Dr. Anil Kumar, Indian Institute of Remote Sensing (IIRS), Dehradun

Organizations involved