hi lastarsenal, thank you for your reply First of all, the input to ABtDenseOutJob is a rating matrix, where row key is item id and value is VectorWritable, I want to know if the input format is right or not ? And then if it's right, so definitely the code below :
int i = vecEl.index(); i will be the item id and it may larger than the vector size , so I think it's some kind of bug or I can't quite understand the orginal logic ------------------------------------------------------------------------------------------------ Hi, HongFei, You can print some variable like aRowCount, vecSize to check whey ArrayIndexOutOfBoundsException At 2015-05-21 15:30:23, "[email protected]" <[email protected]> wrote: >I've run the SSVDCLI with "-q 1" parameter, but I've got an >java.lang.ArrayIndexOutOfBoundsException. > >I found that it's because when it's not a dense vector, i is the index of an >Vector.Element and this index is an item id,so it exceeds the vector size. >My question is if there is a bug in ABtDenseOutJob? > >the following code is in ABtDenseOutJob --> ABtMapper --> map() : > >if (vec.isDense()) { >for (int i = 0; i < vecSize; i++) { >extendAColIfNeeded(i, aRowCount + 1); >aCols[i].setQuick(aRowCount, vec.getQuick(i)); >} >} else if (vec.size() > 0) { >for (Vector.Element vecEl : vec.nonZeroes()) { >int i = vecEl.index(); // i is item id , so it will exceed the vec.size() >usually, when extendAColIfNeeded(i, aRowCount + 1) is called it will get an >error >extendAColIfNeeded(i, aRowCount + 1); >aCols[i].setQuick(aRowCount, vecEl.get()); >} >} > >So how to fix this proplem ?
