Start with a question
Useful machine learning begins with a narrow question, a measurable success criterion, and data that relates to the desired outcome.
temperatures = [18, 20, 22, 24]
average = sum(temperatures) / len(temperatures)
print(average)PRACTICAL AI AND ML COURSE
Learn the reasoning, data preparation, model evaluation, and responsible-use practices behind machine learning. Every topic has a runnable Python example for Open Editor.
Practice method: use the examples to make the calculations visible. These lessons explain concepts with plain Python; production ML typically uses specialized libraries and carefully governed data.
Useful machine learning begins with a narrow question, a measurable success criterion, and data that relates to the desired outcome.
temperatures = [18, 20, 22, 24]
average = sum(temperatures) / len(temperatures)
print(average)A feature is an input a model uses to make a prediction. Good features are relevant, available at prediction time, and measured consistently.
Regression predicts a number, classification predicts a category, and clustering groups similar records. The right model depends on the problem and data.
def predict_price(size):
return 50000 + 120 * size
print(predict_price(80))Keep some data separate from training. A model that only performs well on examples it has already seen is not yet useful.
Models can amplify errors or unfairness present in their data. Evaluate performance across relevant groups, protect personal data, give people meaningful oversight, and do not use a model beyond what its evidence supports.
Human judgment remains essential: a prediction is evidence, not a decision. High-impact uses require domain expertise, review, documentation, and ongoing monitoring.