ing with these datasets can provide great opportunity to practice your machine learning skills disadvantage of competitions is that they already provide particular metric to optimizeand usually fixedpreprocessed dataset keep in mind that defining the problem and collecting the data are also important aspects of real-world problemsand that representing the problem in the right way might be much more important than squeezing the last percent of accuracy out of classifier conclusion we hope we have convinced you of the usefulness of machine learning in wide variety of applicationsand how easily machine learning can be implemented in practice keep digging into the dataand don' lose sight of the larger picture wrapping up