/* (non-Javadoc)
* @see org.apache.hadoop.mapreduce.Mapper#map(KEYIN, VALUEIN, org.apache.hadoop.mapreduce.Mapper.Context)
*/
@Override
protected void map(LongWritable key, Text value, Context context)
throws IOException, InterruptedException {
String[] items = value.toString().split(fieldDelimRegex);
srcEntityId = items[0];
trgEntityId = items[1];
rank = Integer.parseInt(items[items.length - 1]);
outKey.initialize();
if (recordInOutput) {
// include source and taraget record
if (recLength == -1) {
recLength = (items.length - 3) / 2;
srcRecBeg = 2;
srcRecEnd = trgRecBeg = 2 + recLength;
trgRecEnd = trgRecBeg + recLength;
}
srcRec = org.chombo.util.Utility.join(items, srcRecBeg, srcRecEnd, fieldDelim);
trgRec = org.chombo.util.Utility.join(items, trgRecBeg, trgRecEnd, fieldDelim);
outKey.add(srcEntityId, srcRec, rank);
outVal.set(trgEntityId + fieldDelim + trgRec + fieldDelim + items[items.length - 1]);
} else {
// only target entity id and distance
outKey.add(srcEntityId, rank);
outVal.set(trgEntityId + fieldDelim + items[items.length - 1]);
}
context.write(outKey, outVal);
}
@Override
public int run(String[] args) throws Exception {
Job job = new Job(getConf());
String jobName = "Running aggregates for numerical attributes";
job.setJobName(jobName);
job.setJarByClass(RunningAggregator.class);
FileInputFormat.addInputPath(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
Utility.setConfiguration(job.getConfiguration(), "chombo");
job.setMapperClass(RunningAggregator.AggrMapper.class);
job.setReducerClass(RunningAggregator.AggrReducer.class);
job.setMapOutputKeyClass(Tuple.class);
job.setMapOutputValueClass(Tuple.class);
job.setOutputKeyClass(NullWritable.class);
job.setOutputValueClass(Text.class);
job.setNumReduceTasks(job.getConfiguration().getInt("num.reducer", 1));
int status = job.waitForCompletion(true) ? 0 : 1;
return status;
}
@Override
public int run(String[] args) throws Exception {
Job job = new Job(getConf());
String jobName = "Rating predictor MR";
job.setJobName(jobName);
job.setJarByClass(UtilityPredictor.class);
FileInputFormat.addInputPaths(job, args[0]);
FileOutputFormat.setOutputPath(job, new Path(args[1]));
job.setMapperClass(UtilityPredictor.PredictionMapper.class);
job.setReducerClass(UtilityPredictor.PredictorReducer.class);
job.setMapOutputKeyClass(TextInt.class);
job.setMapOutputValueClass(Tuple.class);
job.setOutputKeyClass(NullWritable.class);
job.setOutputValueClass(Text.class);
job.setGroupingComparatorClass(ItemIdGroupComprator.class);
job.setPartitionerClass(ItemIdPartitioner.class);
Utility.setConfiguration(job.getConfiguration());
int numReducer = job.getConfiguration().getInt("utp.num.reducer", -1);
numReducer = -1 == numReducer ? job.getConfiguration().getInt("num.reducer", 1) : numReducer;
job.setNumReduceTasks(numReducer);
int status = job.waitForCompletion(true) ? 0 : 1;
return status;
}
@Override
public int run(String[] args) throws Exception {
Job job = new Job(getConf());
String jobName = "Implicit rating estimator MR";
job.setJobName(jobName);
job.setJarByClass(ImplicitRatingEstimator.class);
FileInputFormat.addInputPath(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
job.setMapperClass(ImplicitRatingEstimator.RatingEstimatorMapper.class);
job.setReducerClass(ImplicitRatingEstimator.RatingEstimatorReducer.class);
job.setMapOutputKeyClass(Tuple.class);
job.setMapOutputValueClass(Tuple.class);
job.setOutputKeyClass(NullWritable.class);
job.setOutputValueClass(Text.class);
job.setGroupingComparatorClass(SecondarySort.TuplePairGroupComprator.class);
job.setPartitionerClass(SecondarySort.TuplePairPartitioner.class);
Utility.setConfiguration(job.getConfiguration());
job.setNumReduceTasks(job.getConfiguration().getInt("num.reducer", 1));
int status = job.waitForCompletion(true) ? 0 : 1;
return status;
}
@Override
public int run(String[] args) throws Exception {
Job job = new Job(getConf());
String jobName = "Top n matches MR";
job.setJobName(jobName);
job.setJarByClass(TopMatches.class);
FileInputFormat.addInputPath(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
job.setMapperClass(TopMatches.TopMatchesMapper.class);
job.setReducerClass(TopMatches.TopMatchesReducer.class);
job.setCombinerClass(TopMatches.TopMatchesCombiner.class);
job.setMapOutputKeyClass(Tuple.class);
job.setMapOutputValueClass(Text.class);
job.setOutputKeyClass(NullWritable.class);
job.setOutputValueClass(Text.class);
job.setGroupingComparatorClass(SecondarySort.TuplePairGroupComprator.class);
job.setPartitionerClass(SecondarySort.TupleTextPartitioner.class);
Utility.setConfiguration(job.getConfiguration());
int numReducer = job.getConfiguration().getInt("tom.num.reducer", -1);
numReducer = -1 == numReducer ? job.getConfiguration().getInt("num.reducer", 1) : numReducer;
job.setNumReduceTasks(numReducer);
int status = job.waitForCompletion(true) ? 0 : 1;
return status;
}
@Override
public int run(String[] args) throws Exception {
Job job = new Job(getConf());
String jobName = "Rating difference MR";
job.setJobName(jobName);
job.setJarByClass(RatingDifference.class);
FileInputFormat.addInputPath(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
job.setMapperClass(RatingDifference.DiffMapper.class);
job.setReducerClass(RatingDifference.DiffReducer.class);
job.setMapOutputKeyClass(TextPair.class);
job.setMapOutputValueClass(IntWritable.class);
job.setOutputKeyClass(NullWritable.class);
job.setOutputValueClass(Text.class);
Utility.setConfiguration(job.getConfiguration());
job.setNumReduceTasks(job.getConfiguration().getInt("num.reducer", 1));
int status = job.waitForCompletion(true) ? 0 : 1;
return status;
}
@Override
public int run(String[] args) throws Exception {
Job job = new Job(getConf());
String jobName = "Histogram MR";
job.setJobName(jobName);
job.setJarByClass(Histogram.class);
FileInputFormat.addInputPath(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
job.setMapperClass(Histogram.HistogramMapper.class);
job.setReducerClass(Histogram.HistogramReducer.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(IntWritable.class);
job.setOutputKeyClass(NullWritable.class);
job.setOutputValueClass(Text.class);
Utility.setConfiguration(job.getConfiguration());
int numReducer = job.getConfiguration().getInt("his.num.reducer", -1);
numReducer = -1 == numReducer ? job.getConfiguration().getInt("num.reducer", 1) : numReducer;
job.setNumReduceTasks(numReducer);
int status = job.waitForCompletion(true) ? 0 : 1;
return status;
}
/* (non-Javadoc)
* @see org.apache.hadoop.mapreduce.Reducer#setup(org.apache.hadoop.mapreduce.Reducer.Context)
*/
protected void setup(Context context) throws IOException, InterruptedException {
Configuration config = context.getConfiguration();
fieldDelim = config.get("field.delim", ",");
InputStream fs = Utility.getFileStream(config, "rating.mapper.config.path");
ObjectMapper mapper = new ObjectMapper();
ratingMapper = mapper.readValue(fs, EngagementToPreferenceMapper.class);
outputDetail = config.getBoolean("rating.estimator.output.detail", false);
}
/* (non-Javadoc)
* @see org.apache.hadoop.mapreduce.Mapper#map(KEYIN, VALUEIN, org.apache.hadoop.mapreduce.Mapper.Context)
*/
@Override
protected void map(LongWritable key, Text value, Context context)
throws IOException, InterruptedException {
String[] items = value.toString().split(fieldDelimRegex);
itemList.clear();
for (int i = 0; i < items.length; ++i) {
String item = items[i];
Field field = schema.getEntity().getFieldByOrdinal(i);
if (null != field && field.getDataType().equals(Field.DATA_TYPE_TEXT)) {
String format = field.getTextDataSubTypeFormat();
if (field.getDataSubType().equals(Field.TEXT_TYPE_PERSON_NAME)) {
item = countryFormat.personNameFormat(item);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_STREET_ADDRESS)) {
item = countryFormat.caseFormat(item, format);
item = countryFormat.streetAddressFormat(item);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_STREET_ADDRESS_ONE)) {
item = countryFormat.caseFormat(item, format);
item = countryFormat.streetAddressOneFormat(item);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_STREET_ADDRESS_TWO)) {
item = countryFormat.caseFormat(item, format);
item = countryFormat.streetAddressTwoFormat(item);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_CITY)) {
item = countryFormat.caseFormat(item, format);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_STATE)) {
item = countryFormat.stateFormat(item);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_ZIP)) {
item = countryFormat.caseFormat(item, format);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_COUNTRY)) {
item = countryFormat.caseFormat(item, format);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_EMAIL_ADDR)) {
item = countryFormat.emailFormat(item, format);
} else if (field.getDataSubType().equals(Field.TEXT_TYPE_PHONE_NUM)) {
item = countryFormat.phoneNumFormat(item, format);
} else {
// if text field analyze
item = tokenize(item);
}
}
itemList.add(item);
}
// build value string
valueHolder.set(org.chombo.util.Utility.join(itemList, fieldDelim));
context.write(NullWritable.get(), valueHolder);
}
/* (non-Javadoc)
* @see org.apache.hadoop.mapreduce.Reducer#reduce(KEYIN, java.lang.Iterable, org.apache.hadoop.mapreduce.Reducer.Context)
*/
protected void reduce(Tuple key, Iterable<Text> values, Context context)
throws IOException, InterruptedException {
srcEntityId = key.getString(0);
count = 0;
boolean doEmitNeighbor = false;
valueList.clear();
for (Text value : values) {
doEmitNeighbor = false;
// count based neighbor
if (nearestByCount) {
doEmitNeighbor = true;
if (++count >= topMatchCount) {
doEmitNeighbor = false;
}
}
// distance based neighbors
if (nearestByDistance) {
// distance based neighbor
String[] items = value.toString().split(fieldDelim);
distance = Integer.parseInt(items[items.length - 1]);
if (distance <= topMatchDistance) {
if (!nearestByCount) {
doEmitNeighbor = true;
}
} else {
doEmitNeighbor = false;
}
}
if (doEmitNeighbor) {
// along with neighbors
if (compactOutput) {
if (recordInOutput) {
// contains id,record,rank - strip out entity ID and rank
String[] valueItems = value.toString().split(fieldDelim);
valueList.add(org.chombo.util.Utility.join(valueItems, 1, valueItems.length - 1));
} else {
// contains id, rank
valueList.add(value.toString());
}
} else {
outVal.set(srcEntityId + fieldDelim + value.toString());
context.write(NullWritable.get(), outVal);
}
} else {
// only source entity if neighborhood condition not met
if (outputWithNoNeighbor && !compactOutput) {
outVal.set(srcEntityId);
context.write(NullWritable.get(), outVal);
}
}
}
// emit in compact format
if (compactOutput) {
boolean doEmit = true;
String srcRec = recordInOutput ? key.getString(1) : "";
int numNeighbor = valueList.size();
if (0 == numNeighbor) {
// only source entity if neighborhood condition not met
if (outputWithNoNeighbor) {
outVal.set(
recordInOutput
? srcEntityId + fieldDelim + srcRec + fieldDelim + numNeighbor
: srcEntityId);
} else {
doEmit = false;
}
} else {
String targetValues = org.chombo.util.Utility.join(valueList, fieldDelim);
outVal.set(
recordInOutput
? srcEntityId + fieldDelim + srcRec + fieldDelim + numNeighbor + targetValues
: srcEntityId + fieldDelim + targetValues);
}
if (doEmit) {
context.write(NullWritable.get(), outVal);
}
}
}
/* (non-Javadoc)
* @see org.apache.hadoop.mapreduce.Reducer#setup(org.apache.hadoop.mapreduce.Reducer.Context)
*/
protected void setup(Context context) throws IOException, InterruptedException {
Configuration config = context.getConfiguration();
if (config.getBoolean("debug.on", false)) {
LOG.setLevel(Level.DEBUG);
System.out.println("in debug mode");
}
fieldDelim = config.get("field.delim", ",");
topMatchCount = config.getInt("top.match.count", 10);
isValidationMode = config.getBoolean("validation.mode", true);
kernelFunction = config.get("kernel.function", "none");
kernelParam = config.getInt("kernel.param", -1);
classCondtionWeighted = config.getBoolean("class.condtion.weighted", false);
neighborhood = new Neighborhood(kernelFunction, kernelParam, classCondtionWeighted);
outputClassDistr = config.getBoolean("output.class.distr", false);
inverseDistanceWeighted = config.getBoolean("inverse.distance.weighted", false);
// regression
String predictionMode = config.get("prediction.mode", "classification");
if (predictionMode.equals("regression")) {
neighborhood.withPredictionMode(PredictionMode.Regression);
String regressionMethod = config.get("regression.method", "average");
regressionMethod = WordUtils.capitalize(regressionMethod);
neighborhood.withRegressionMethod(RegressionMethod.valueOf(regressionMethod));
}
// decision threshold for classification
decisionThreshold = Double.parseDouble(config.get("decision.threshold", "-1.0"));
if (decisionThreshold > 0 && neighborhood.IsInClassificationMode()) {
String[] classAttrValues = config.get("class.attribute.values").split(",");
posClassAttrValue = classAttrValues[0];
negClassAttrValue = classAttrValues[1];
neighborhood.withDecisionThreshold(decisionThreshold).withPositiveClass(posClassAttrValue);
}
// using cost based arbitrator for classification
useCostBasedClassifier = config.getBoolean("use.cost.based.classifier", false);
if (useCostBasedClassifier && neighborhood.IsInClassificationMode()) {
if (null == posClassAttrValue) {
String[] classAttrValues = config.get("class.attribute.values").split(",");
posClassAttrValue = classAttrValues[0];
negClassAttrValue = classAttrValues[1];
}
int[] missclassificationCost =
Utility.intArrayFromString(config.get("misclassification.cost"));
falsePosCost = missclassificationCost[0];
falseNegCost = missclassificationCost[1];
costBasedArbitrator =
new CostBasedArbitrator(
negClassAttrValue, posClassAttrValue, falseNegCost, falsePosCost);
}
// confusion matrix for classification validation
if (isValidationMode) {
if (neighborhood.IsInClassificationMode()) {
InputStream fs =
Utility.getFileStream(context.getConfiguration(), "feature.schema.file.path");
ObjectMapper mapper = new ObjectMapper();
schema = mapper.readValue(fs, FeatureSchema.class);
classAttrField = schema.findClassAttrField();
List<String> cardinality = classAttrField.getCardinality();
predictingClasses = new String[2];
predictingClasses[0] = cardinality.get(0);
predictingClasses[1] = cardinality.get(1);
confMatrix = new ConfusionMatrix(predictingClasses[0], predictingClasses[1]);
}
}
LOG.debug(
"classCondtionWeighted:"
+ classCondtionWeighted
+ "outputClassDistr:"
+ outputClassDistr);
}
