question: @ Override protected Instances process ( Instances instances ) throws Exception { Instances result ; Instance instOld ; Instance instNew ; int i ; int n ; double [ ] values ; int numAttNew ; int numAttOld ; if ( ! isFirstBatchDone ( ) ) { computeThresholds ( instances ) ; } result = getOutputFormat ( ) ; numAttOld = instances . numAttributes ( ) ; numAttNew = result . numAttributes ( ) ; for ( n = 0 ; n < instances . numInstances ( ) ; n ++ ) { instOld = instances . instance ( n ) ; values = new double [ numAttNew ] ; System . arraycopy ( instOld . toDoubleArray ( ) , 0 , values , 0 , numAttOld ) ; instNew = new DenseInstance ( 1.0 , values ) ; instNew . setDataset ( result ) ; if ( ! getDetectionPerAttribute ( ) ) { if ( isOutlier ( instOld ) ) { instNew . setValue ( m_OutlierAttributePosition [ 0 ] , 1 ) ; } if ( isExtremeValue ( instOld ) ) { instNew . setValue ( m_OutlierAttributePosition [ 0 ] + 1 , 1 ) ; if ( getExtremeValuesAsOutliers ( ) ) { instNew . setValue ( m_OutlierAttributePosition [ 0 ] , 1 ) ; } } } else { for ( i = 0 ; i < m_AttributeIndices . length ; i ++ ) { if ( m_AttributeIndices [ i ] == NON_NUMERIC ) { continue ; } if ( isOutlier ( instOld , m_AttributeIndices [ i ] ) ) { instNew . setValue ( m_OutlierAttributePosition [ i ] , 1 ) ; } if ( isExtremeValue ( instOld , m_AttributeIndices [ i ] ) ) { instNew . setValue ( m_OutlierAttributePosition [ i ] + 1 , 1 ) ; if ( getExtremeValuesAsOutliers ( ) ) { instNew . setValue ( m_OutlierAttributePosition [ i ] , 1 ) ; } } if ( getOutputOffsetMultiplier ( ) ) { instNew . setValue ( m_OutlierAttributePosition [ i ] + 2 , calculateMultiplier ( instOld , m_AttributeIndices [ i ] ) ) ; } } } copyValues ( instNew , false , instOld . dataset ( ) , getOutputFormat ( ) ) ; result . add ( instNew ) ; } return result ; }
target:  Processes the given data (may change the provided dataset) and returns the modified version. This method is called in batchFinished(). This implementation only calls process(Instance) for each instance in the given dataset.