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Questions tagged [mahout-recommender]

A collaborative filtering engine takes users' preferences for items and returns estimated preferences for other items.

Mahout provides a rich set of components from which you can construct a customized recommender system from a selection of algorithms. Mahout is designed to be enterprise-ready; it's designed for performance, scalability and flexibility.

See Mahout Recommender Documentation

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Slope-one Recommendor

I cloned Mahout with tag 0.7 from Github and trying to run Slope one-Recommendendation util which is provided by Mahout to be run on Mahout . But I couldn't find any such util. Can some one help me.
Vineel
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Display pearson correlation similarity between two users in Apache Mahout

Does anybody know how to obtain the numeric value of similarity between any two users of a given dataset in Apache Mahout?
SIDDHARTH MEHTA
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Mahout itemsimilarity - maxPrefs parameter

In itemsimilarity metod tere is a parameter like: --maxPrefs (-mppu) maxPrefs - max number of preferences to …
herder
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collaborative filtering item-based in mahout - without isolating users

In mahout there is implemented method for item based Collaborative filtering called itemsimilarity. In the theory, similarity between items should be calculated only for users who ranked both items. During testing I realized that in mahout it works…
herder
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How to read SEQ files in pig

I have M, U, and userRatings part-files as an intermediate result of an ALS matrix factorization process. The header are: SEQ. org.apache.hadoop.io.IntWritable%org.apache.mahout.math.VectorWritable I need to operate with that vectors/features, to…
fetnelio
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Creating data model for mahout

I am trying to build an item-item similarity matching recommendation engine with mahout. The data set is as in the following format ( attributes are in text not in numerals format ) name : category : cost : ingredients x : xx1 : 15 : xxx1, xxx2,…
Sreejithc321
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mahout for content based recomendation

I have a list user data : user name, age, sex , address, location etc and a set of product data : Product name, Cost , description etc Now i would like to build a recommendation engine that will be able to : 1 Figure out similar products eg : …
Sreejithc321
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Get scores on continuous scale from Mahout recommender with boolean data

I have a directed graph expressed as (follower,followed) and would like to try to use Mahout to get recommendations for new edges in the graph (aka predict new users that are likely to be followed). This is the code I started from: mahout…
ADJ
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mahout datamodel for amazon redshift Recommendation Engine

how would i build Recommendation Engine with amazon Redshift as a data source.is there any mahout data model for amazon redshift or S3
Sravan K Reddy
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mahout recommendation with 3 columns without preferences

I have to recommend videos to users. I have csv file containing userId, videoId, productId. Under a product id there are many similar videos present. Like: userId videoId productId 1 2 1 1 3 1 1 …
ricky
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Coding to find Z score in Apache Mahout and compute similarity

I am new to apache mahout. I have managed to use it for pearson corelation and cosine vector but i need to normalize data and use Z Score to calculate similarity. I am unable to find methods in mahout which allow to do so. The mahout wiki also…
Umar Farooque
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Mahout recommender returns no results

My Mahout recommender is returning no results although from the looks of the evaluator output it seems like it should: 2014-10-15 18:33:36,704 INFO GenericDataModel - Processed 90 users 2014-10-15 18:33:36,735 INFO …
Mike Summers
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Outputting the item item similarity matrix in mahout

I have followed the recommendation engine example as given in chapter 6 of the Mahout in Action text book. Now while I get the output for the designated user, Now is it possible to output the item-item similarity matrix computed during the 3rd Map…
Abhiroop Sarkar
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How would i recommend products with quantity to customer with Mahout item or user recommendation model

its distributor level recommendation engine. i am recommending products to distributors.i want to recommend products with quantity also.here i need to recommend past purchased products with quantity and new products with quantity (anticipating the…
Sravan K Reddy
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Mahout running distributed recommendation gives empty file

I am going through the Mahout in Action book and trying out the distributed recommendation engine example. But instead of the Wikipedia dataset I am using a small dataset for my…
Abhiroop Sarkar
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