Apr 8, 2022Laplace SmoothingLet’s create a story line in order to understand Laplace Smoothing correctly. A sports coach (SC) has a team of 10 players from P0 to P9 ( check in Figure 1 ) to train for upcoming tournament. SC wants each of the player to practice hard. SC is absolute intolerant…NLP2 min readNLP2 min read

Apr 27, 2021Mathematics behind Logistic RegressionSo., for Logistic Regression, the LHS ≠ RHS.Logistic Regression1 min readLogistic Regression1 min read

Apr 26, 2021…ile odds ratio can vary between 0 to positive infinity, log (odds ratio) will vary between [-∞, ∞]. Specifically when odds ratio lies between [0,1], log (odds ratio) is negative.‘Logit’ of Logistic Regression; Understanding the Fundamentals1K7Saptashwa BhattacharyyaHi., Lets take two case,Hi., Lets take two case, Case_1: p = 0.9 then odd_1 = 0.9/0.1 =9 Case_2: p = 0.5 then odd_2 = 0.5/0.5 = 1 now odd ratio = 9/1 = 1 which violates the range [0,1]. Am I missing something ?1 min read1 min read

Apr 9, 2021Co-Variance in WordsCovariance is the concept of variance to multiple random variables. Instead of measuring the fluctuation of a single random variable, the covariance measures the fluctuation of two variables with each other. Var[X+Y] = Var[X] + Var[Y] + 2.XY.Cov(X,Y) ?Covariance2 min readCovariance2 min read

Apr 8, 2021Expectation i.e. ‘E[X]’ in WordsA Random variable is a variable whose value is determined by some random event. The Expectation of random variable ‘X’ i.e. E[X] is the central tendency of X when picked once randomly from the sample space (i.e. a homogeneous/ heterogeneous space of all possible outcome). E[X+c] = ?Expectations2 min readExpectations2 min read

Apr 7, 2021Variance, in WordsLet’s assume L is a population set. Variance of L tells, How much scattered data points of L are from L’s Mean(u). Also,Variance2 min readVariance2 min read

Jun 18, 2020Demystify p-value, α and Degree of Freedom in Statistics using ExamplesDisclaimer : All characters and scenarios are imaginary. It has no relation with practical data. Scenario 1 Let’s create a scenario to understand the concepts better. One day I found my friend ‘L’ boasting about himself that he can run for 1.5 hours straight without a break ( but he always feels…Statistics2 min readStatistics2 min read