What is machine learning please explain in practical examples

Answer 1

Machine learning is finding a pattern in your historical data in order to be able to predict its future value.

In machine learning you give your model a training dataset, it analyzes it and fits a function describing all the data values. This function is then tested on a test dataset and if it's good to go, the model is used to predict future data instances.

That's in short version, of course :)

Answer 2

Practical examples include:
* weather forecasting
* stock price prediction
* client segmentation / classification
* machine malfunction time prediction
* logistics cost optimization
* natural language processing
* sound filtering and cleaning

and many others... :)