Then, this data is fed into an algorithm that «learns» what is a positive and what is a negative text, and finally, that algorithm is applied to the whole dataset. (blog.politics.ox.ac.uk)
The 2005 election was wrongly predicted by the index as Michael Howard had a relatively low dissatisfaction score combined with the highest «don't know» score across the whole dataset. (blog.politics.ox.ac.uk)
I was too deep in to the formatting when it dawned on me that adjusted close for the whole dataset would improperly adjust the future purchases, each purchase should have its own dividend adjustment path but the point remains. (money.stackexchange.com)