Sorry if this isn't the right place to ask but how would I go about
finding trending data over a certain period of time.
For example: http://www.ebay.com has a section "Trends on eBay" that is
updated daily. I was wondering how this can be accomplished using Mahout
(if possible)
For input I
I think the most simple way to do this woulds be to bucket/group-by
the timestamp and then look for the most frequent search/item/product
in each bucket. Fairly simple MapReduce job.
Josh
On Sat, Jun 18, 2011 at 1:52 PM, Mark wrote:
> Sorry if this isn't the right place to ask but how would I go
Two things will help in addition to what Josh suggested:
a) when looking for items that are trending hot, use the difference in the
log rank as a score. For most internetly things, rank is proportional to
1/rate so log rank is -log rate. Refining this slightly to -log (epsilon +
1/rank) makes th
two of my most popular blog posts are on this exactly!
a trending topics algorithm (note: not a _frequent_ topics algorithm,
a _trending_ topics algorithm)
http://matpalm.com/blog/2010/04/27/trending-topics-in-tweets-about-cheese-part1/
and implemented in pig
http://matpalm.com/blog/2010/05/01/t
