cost function sigmoid what is sigmoid function which is the only form of logistic regression? is sigmoid function a logistic regression function? logistic regression in machine learning what is the domain in logistic regression which function can i use as the basis for the hypothesis? what type of function is sigmoid what is sigmoid function what is the function of sigmoid what is the sigmoid function what is the function in logistic regression what is logistic regression why is the sigmoid function used in logistic regression why is sigmoid function useful logistic regression what to do with sigmoid what is the purpose of the sigmoid function in logistic regression what is the domain of the sigmoid function what kind of function is the logistic regression function what is the intuition behind logistic regression