Useful tips for everyday
Why Multicollinearity is a problem? Why is Multicollinearity a problem? Multicollinearity generates high variance of the estimated coefficients and hence, the coefficient estimates corresponding to…
What is Alpha LeakyReLU? LeakyReLU(alpha=0.3, **kwargs) Leaky version of a Rectified Linear Unit. It allows a small gradient when the unit is not active: f(x)…
Why Gumbel Softmax instead of Softmax? The advantage of Gumbel Softmax [3] is it samples one-hot according to the current learned distribution of \pi, it…
How to retrain existing and trained neural network without destroying trained content? Matlab train () function used for training the neural network initializes all weights…
What is EPV in logistic regression? For logistic regression analysis, sample size is typically expressed in terms of events per variable (EPV), defined by the…
What is gain in LightGBM? ‘gain’ – the average gain of the feature when it is used in trees (default) ‘split’ – the number of…
What is a threshold in data science? The threshold represents the value above which we consider a data point in the positive class. If we…
How does backpropagation in a convolutional layer work? This sub-region activated by the filter is sliding all across the input array x. if x and…
How do you test the accuracy of a model? The three main metrics used to evaluate a classification model are accuracy, precision, and recall. Accuracy…
What is sequence in RNN? Sequence models are the machine learning models that input or output sequences of data. Sequential data includes text streams, audio…