Which of the following is NOT an example of a problem with the collection and analysis
of a large data set which may have unintended negative consequences?
Unemployment data collected by the Bureau of Labor Statistics helps policy makers make
recommendations about new business development and job training programs.
Netflix movie recommendations for an account holder, based on aggregate data from many
users, does not contain any selections that are significantly different from the types of films the
account holder usually watches.
A crime database designates an address as a likely site of illegal activity and is not updated
when a new family moves into the address
Federal agents looking for clues about crime find that the data analysis tools they've purchased
aren't able to differentiate between sarcasm and true menace expressed on twitter.

Some of your friends have gotten into the burgeoning field of time-series data mining, in which one looks for patterns in sequences of events that occur over time. purchases at stock exchanges"what's being bought" are one source of data with a natural ordering in time. given a long sequence s of such events, your friends want an efficient way to detect certain "patterns" in them"for example, they may want to know if the four events buy yahoo, buy ebay, buy yahoo, buy oracle occur in this sequence s, in order but not necessarily consecutively. they begin with a collection of possible events (e.g., the possible transactions) and a sequence s of n of these events. a given event may occur multiple times in s (e.g., yahoo stock may be bought many times in a single sequence s). we will say that a sequence s is a subsequence of s if there is a way to delete certain of the events from s so that the remaining events, in order, are equal to the sequence s . so, for example, the sequence of four events above is a subsequence of the sequence buy amazon, buy yahoo, buy ebay, buy yahoo, buy yahoo, buy oracle their goal is to be able to dream up short sequences and quickly detect whether they are subsequences of s. so this is the problem they pose to you: give an algorithm that takes two sequences of events"s of length m and s of length n, each possibly containing an event more than once"and decides in time o(m + n) whether s is a subsequence of s.

Terri needs to insert a cover page into her document. where should she go to access the commands to do so? o insert tab, objects group o insert tab, illustrations group o insert tab, pages group o insert tab, media group submit

Amedian in the road will be marked with a white sign that has a black arrow going to the left of the median. true false