π― Estimating F allows us to predict outputs or understand the relationship between features and output.
π Developing a learning algorithm involves training data, teaching the algorithm the patterns, and creating a model.
π The trained model is then used to predict or infer from unseen or validation data.
π‘ Evaluating the accuracy and effectiveness of a machine learning model is crucial before deploying it.
π To train a machine learning algorithm, we need to estimate the function F using a given dataset.
π The dataset example mentioned includes features such as glucose, blood pressure, insulin, DMI, and age.
π We can predict the probability of someone having diabetes using certain indicators.
π Each observation in the dataset has associated features like glucose, blood pressure, insulin, PMI, and H.
π The value of each predictor or input for an observation is represented by x sub i j.
π The response variable for each observation is represented by YsubI.
π Predictors for each observation are represented by Xsub1 to XsubB.
π Notation Xij is used to represent the predictors for each specific observation.
π Observation one consists of glucose, blood pressure, insulin, BMI, and other factors.
π Data can be divided into training and testing data for estimating f.
π The outcome for observation one is represented by y sub 1.
π We use notations xβ to xβ and yβ to yβ to represent observations in the training data.
π§ The goal is to find a function f-hat that can estimate y-hat based on x for any observation.
π By applying a learning method to the training data, we can estimate f and approximate y-hat using f-hat.