I\'m a mathematician and occasionally do some statistics/machine learning analysis consulting projects on the side开发者_开发问答. The data I have access to are usually on the smaller side, at most a
hey all, just getting started on hadoop and curious what the best way in mapreduce would be to count unique visitors if your logfiles looked like this...
I have a quick Hadoop Streaming question. If I\'m using Python streaming and I have Python packages that my mappers/reducers require but aren\'t installed by default do I need to install those on all
Using Python, I\'m computing cosine similarity across items. given event data that represents a purchase (user,item), I have a list of all items \'bought\' by my users.
My program follows a iterative map/reduce approach. And it needs to stop if certain conditions are met. Is there anyway i can set a global variable that can be distributed across all map/reduce tasks
Why do we use MapReduce? and what a开发者_如何学编程re some use cases?The classic example is counting the occurrence of words in a very large collection of documents.You can use the map step to genera
I have a large dataset (c. 40G) that I want to use for some NLP (largely embarrassing开发者_C百科ly parallel) over a couple of computers in the lab, to which i do not have root access, and only 1G of
This is a conceptual question involving Hadoop/HDFS. Lets say you have a file containing 1 billion lines. And for the sake of simplicity, lets consider that each line is of the form <k,v> where
I am currently trying to perform calculations like clustering coefficient on huge graphs with the help of Hadoop. Therefore I need an efficient way to store the graph in a way that I can easily access
My installshield project uses custom prerequisites to install .Net Framework 4.0 Client Profile and开发者_C百科 Microsoft Sync Framework 2.0 client package.
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