# analyzing music trends and recommendations the million song dataset taste profile exploratory data analysis loading and trimming data enhancing the data visual analysis ecommendation engines types of recommendation engines utility of recommendation engines popularity-based recommendation engine item similarity based recommendation engine matrix factorization based recommendation engine  note on recommendation engine libraries summary # forecasting stock and commodity prices time series data and analysis time series components smoothing techniques forecasting gold price problem statement dataset traditional approaches modeling stock price prediction problem statement dataset recurrent neural networkslstm upcoming techniquesprophet ummary xiv