Created
August 19, 2014 15:16
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svd test
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| package com.etsy.scalding.jobs | |
| import com.etsy.conjecture.scalding.SVD | |
| import com.twitter.scalding._ | |
| import com.twitter.scalding.mathematics.Matrix._ | |
| class SVDTest(args : Args) extends Job(args) { | |
| val s = IterableSource[(Long, List[Double])]((0 until 100).map{i => (i.toLong, (0 until 100).map{j => if(i == j) 1.0 else 0.0}.toList)}.toList, ('row, 'values)) | |
| .flatMapToMatrix('row, 'values){x : (Long, List[Double]) => | |
| x._2.zipWithIndex.map{t => (x._1, t._2, t._1)} | |
| } | |
| val t = IterableSource[(Long, List[Double])]((0 until 100).map{i => (i.toLong, (0 until 100).map{j => if(i == j) (i + 1.0) else 0.0}.toList)}.toList, ('row, 'values)) | |
| .flatMapToMatrix('row, 'values){x : (Long, List[Double]) => | |
| x._2.zipWithIndex.map{t => (x._1, t._2, t._1)} | |
| } | |
| val st = (s.transpose*t).write(SequenceFile("test")) | |
| val UEV = SVD(st.pipe, 3) | |
| UEV._1.write(SequenceFile("svd/u")) | |
| UEV._2.write(SequenceFile("svd/e")) | |
| UEV._3.write(SequenceFile("svd/v")) | |
| } |
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