Example 1 with DeepLearningParameters
use of hex.deeplearning.DeepLearningModel.DeepLearningParameters in project h2o-3 by h2oai.
the class DeepLearningMNIST method run.
@Test
@Ignore
public void run() {
Scope.enter();
Frame frame = null;
Frame vframe = null;
try {
File file = FileUtils.locateFile("bigdata/laptop/mnist/train.csv.gz");
File valid = FileUtils.locateFile("bigdata/laptop/mnist/test.csv.gz");
if (file != null) {
NFSFileVec trainfv = NFSFileVec.make(file);
frame = ParseDataset.parse(Key.make(), trainfv._key);
NFSFileVec validfv = NFSFileVec.make(valid);
vframe = ParseDataset.parse(Key.make(), validfv._key);
DeepLearningParameters p = new DeepLearningParameters();
// populate model parameters
p._train = frame._key;
p._valid = vframe._key;
// last column is the response
p._response_column = "C785";
p._activation = DeepLearningParameters.Activation.RectifierWithDropout;
// p._activation = DeepLearningParameters.Activation.MaxoutWithDropout;
p._hidden = new int[] { 128, 128, 128 };
p._input_dropout_ratio = 0.0;
p._score_training_samples = 0;
p._adaptive_rate = false;
p._rate = 0.005;
p._rate_annealing = 0;
p._momentum_start = 0;
p._momentum_stable = 0;
p._mini_batch_size = 1;
p._train_samples_per_iteration = -1;
// p._score_duty_cycle = 0.1;
p._shuffle_training_data = true;
// p._reproducible = true;
// p._l1= 1e-5;
p._max_w2 = 1;
//1000*10*5./6;
p._epochs = 20;
//faster as activations remain sparse
p._sparse = true;
// Convert response 'C785' to categorical (digits 1 to 10)
int ci = frame.find("C785");
Scope.track(frame.replace(ci, frame.vecs()[ci].toCategoricalVec()));
Scope.track(vframe.replace(ci, vframe.vecs()[ci].toCategoricalVec()));
DKV.put(frame);
DKV.put(vframe);
// speed up training
// p._adaptive_rate = true; //disable adaptive per-weight learning rate -> default settings for learning rate and momentum are probably not ideal (slow convergence)
//avoid extra communication cost upfront, got enough data on each node for load balancing
p._replicate_training_data = true;
//no need to keep the best model around
p._overwrite_with_best_model = true;
p._classification_stop = -1;
// p._score_interval = 5; //score and print progress report (only) every 20 seconds
//only score on a small sample of the training set -> don't want to spend too much time scoring (note: there will be at least 1 row per chunk)
p._score_training_samples = 10000;
DeepLearning dl = new DeepLearning(p, Key.<DeepLearningModel>make("dl_mnist_model"));
DeepLearningModel model = dl.trainModel().get();
if (model != null)
model.delete();
} else {
Log.info("Please run ./gradlew syncBigDataLaptop in the top-level directory of h2o-3.");
}
} finally {
Scope.exit();
if (vframe != null)
vframe.remove();
if (frame != null)
frame.remove();
}
}
Also used :
Frame(water.fvec.Frame)
NFSFileVec(water.fvec.NFSFileVec)
DeepLearningParameters(hex.deeplearning.DeepLearningModel.DeepLearningParameters)
File(java.io.File)
Ignore(org.junit.Ignore)
Test(org.junit.Test)
Example 2 with DeepLearningParameters
use of hex.deeplearning.DeepLearningModel.DeepLearningParameters in project h2o-3 by h2oai.
the class DeepLearningMissingTest method run.
@Test
public void run() {
long seed = 1234;
DeepLearningModel mymodel = null;
Frame train = null;
Frame test = null;
Frame data = null;
DeepLearningParameters p;
Log.info("");
Log.info("STARTING.");
Log.info("Using seed " + seed);
Map<DeepLearningParameters.MissingValuesHandling, Double> sumErr = new TreeMap<>();
StringBuilder sb = new StringBuilder();
for (DeepLearningParameters.MissingValuesHandling mvh : new DeepLearningParameters.MissingValuesHandling[] { DeepLearningParameters.MissingValuesHandling.MeanImputation, DeepLearningParameters.MissingValuesHandling.Skip }) {
double sumloss = 0;
Map<Double, Double> map = new TreeMap<>();
for (double missing_fraction : new double[] { 0, 0.05, 0.1, 0.25, 0.5, 0.75, 0.9, 0.99 }) {
double loss = 0;
try {
Scope.enter();
NFSFileVec nfs = NFSFileVec.make("smalldata/junit/weather.csv");
data = ParseDataset.parse(Key.make("data.hex"), nfs._key);
Log.info("FrameSplitting");
// Create holdout test data on clean data (before adding missing values)
FrameSplitter fs = new FrameSplitter(data, new double[] { 0.75f }, generateNumKeys(data._key, 2), null);
//.join();
H2O.submitTask(fs);
Frame[] train_test = fs.getResult();
train = train_test[0];
test = train_test[1];
Log.info("Done...");
// add missing values to the training data (excluding the response)
if (missing_fraction > 0) {
Frame frtmp = new Frame(Key.<Frame>make(), train.names(), train.vecs());
//exclude the response
frtmp.remove(frtmp.numCols() - 1);
//need to put the frame (to be modified) into DKV for MissingInserter to pick up
DKV.put(frtmp._key, frtmp);
FrameUtils.MissingInserter j = new FrameUtils.MissingInserter(frtmp._key, seed, missing_fraction);
//MissingInserter is non-blocking, must block here explicitly
j.execImpl().get();
//Delete the frame header (not the data)
DKV.remove(frtmp._key);
}
// Build a regularized DL model with polluted training data, score on clean validation set
p = new DeepLearningParameters();
p._train = train._key;
p._valid = test._key;
p._response_column = train._names[train.numCols() - 1];
//only for weather data
p._ignored_columns = new String[] { train._names[1], train._names[22] };
p._missing_values_handling = mvh;
// DeepLearningParameters.Loss.ModifiedHuber;
p._loss = DeepLearningParameters.Loss.CrossEntropy;
p._activation = DeepLearningParameters.Activation.Rectifier;
p._hidden = new int[] { 50, 50 };
p._l1 = 1e-5;
p._input_dropout_ratio = 0.2;
p._epochs = 3;
p._reproducible = true;
p._seed = seed;
p._elastic_averaging = false;
// Convert response to categorical
int ri = train.numCols() - 1;
int ci = test.find(p._response_column);
Scope.track(train.replace(ri, train.vecs()[ri].toCategoricalVec()));
Scope.track(test.replace(ci, test.vecs()[ci].toCategoricalVec()));
DKV.put(train);
DKV.put(test);
DeepLearning dl = new DeepLearning(p);
Log.info("Starting with " + missing_fraction * 100 + "% missing values added.");
mymodel = dl.trainModel().get();
// Extract the scoring on validation set from the model
loss = mymodel.loss();
Log.info("Missing " + missing_fraction * 100 + "% -> logloss: " + loss);
} catch (Throwable t) {
t.printStackTrace();
loss = 100;
} finally {
Scope.exit();
// cleanup
if (mymodel != null) {
mymodel.delete();
}
if (train != null)
train.delete();
if (test != null)
test.delete();
if (data != null)
data.delete();
}
map.put(missing_fraction, loss);
sumloss += loss;
}
sb.append("\nMethod: ").append(mvh.toString()).append("\n");
sb.append("missing fraction --> loss\n");
for (String s : Arrays.toString(map.entrySet().toArray()).split(",")) sb.append(s.replace("=", " --> ")).append("\n");
sb.append('\n');
sb.append("sum loss: ").append(sumloss).append("\n");
sumErr.put(mvh, sumloss);
}
Log.info(sb.toString());
Assert.assertEquals(405.5017, sumErr.get(DeepLearningParameters.MissingValuesHandling.Skip), 1e-2);
Assert.assertEquals(3.914915, sumErr.get(DeepLearningParameters.MissingValuesHandling.MeanImputation), 1e-3);
}
Also used :
FrameUtils(water.util.FrameUtils)
Frame(water.fvec.Frame)
NFSFileVec(water.fvec.NFSFileVec)
DeepLearningParameters(hex.deeplearning.DeepLearningModel.DeepLearningParameters)
FrameSplitter(hex.FrameSplitter)
Test(org.junit.Test)
Example 3 with DeepLearningParameters
use of hex.deeplearning.DeepLearningModel.DeepLearningParameters in project h2o-3 by h2oai.
the class DeepLearningProstateTest method runFraction.
public void runFraction(float fraction) {
long seed = 0xDECAFFF;
Random rng = new Random(seed);
String[] datasets = new String[2];
int[][] responses = new int[datasets.length][];
//CAPSULE (binomial), AGE (regression), GLEASON (multi-class)
datasets[0] = "smalldata/logreg/prostate.csv";
//CAPSULE (binomial), AGE (regression), GLEASON (multi-class)
responses[0] = new int[] { 1, 2, 8 };
//Iris-type (multi-class)
datasets[1] = "smalldata/iris/iris.csv";
//Iris-type (multi-class)
responses[1] = new int[] { 4 };
HashSet<Long> checkSums = new LinkedHashSet<>();
int testcount = 0;
int count = 0;
for (int i = 0; i < datasets.length; ++i) {
final String dataset = datasets[i];
for (final int resp : responses[i]) {
Frame frame = null, vframe = null;
try {
NFSFileVec nfs = TestUtil.makeNfsFileVec(dataset);
frame = ParseDataset.parse(Key.make(), nfs._key);
NFSFileVec vnfs = TestUtil.makeNfsFileVec(dataset);
vframe = ParseDataset.parse(Key.make(), vnfs._key);
boolean classification = !(i == 0 && resp == 2);
String respname = frame.name(resp);
if (classification && !frame.vec(resp).isCategorical()) {
Vec r = frame.vec(resp).toCategoricalVec();
frame.remove(resp).remove();
frame.add(respname, r);
DKV.put(frame);
Vec vr = vframe.vec(respname).toCategoricalVec();
vframe.remove(respname).remove();
vframe.add(respname, vr);
DKV.put(vframe);
}
if (classification) {
assert (frame.vec(respname).isCategorical());
assert (vframe.vec(respname).isCategorical());
}
for (DeepLearningParameters.Loss loss : new DeepLearningParameters.Loss[] { DeepLearningParameters.Loss.Automatic, DeepLearningParameters.Loss.CrossEntropy, DeepLearningParameters.Loss.Huber, // DeepLearningParameters.Loss.ModifiedHuber,
DeepLearningParameters.Loss.Absolute, DeepLearningParameters.Loss.Quadratic }) {
if (!classification && (loss == DeepLearningParameters.Loss.CrossEntropy || loss == DeepLearningParameters.Loss.ModifiedHuber))
continue;
for (DistributionFamily dist : new DistributionFamily[] { DistributionFamily.AUTO, DistributionFamily.laplace, DistributionFamily.huber, // DistributionFamily.modified_huber,
DistributionFamily.bernoulli, DistributionFamily.gaussian, DistributionFamily.poisson, DistributionFamily.tweedie, DistributionFamily.gamma }) {
if (classification && dist != DistributionFamily.multinomial && dist != DistributionFamily.bernoulli && dist != DistributionFamily.modified_huber)
continue;
if (!classification) {
if (dist == DistributionFamily.multinomial || dist == DistributionFamily.bernoulli || dist == DistributionFamily.modified_huber)
continue;
}
boolean cont = false;
switch(dist) {
case tweedie:
case gamma:
case poisson:
if (loss != DeepLearningParameters.Loss.Automatic)
cont = true;
break;
case huber:
if (loss != DeepLearningParameters.Loss.Huber && loss != DeepLearningParameters.Loss.Automatic)
cont = true;
break;
case laplace:
if (loss != DeepLearningParameters.Loss.Absolute && loss != DeepLearningParameters.Loss.Automatic)
cont = true;
break;
case modified_huber:
if (loss != DeepLearningParameters.Loss.ModifiedHuber && loss != DeepLearningParameters.Loss.Automatic)
cont = true;
break;
case bernoulli:
if (loss != DeepLearningParameters.Loss.CrossEntropy && loss != DeepLearningParameters.Loss.Automatic)
cont = true;
break;
}
if (cont)
continue;
for (boolean elastic_averaging : new boolean[] { true, false }) {
for (boolean replicate : new boolean[] { true, false }) {
for (DeepLearningParameters.Activation activation : new DeepLearningParameters.Activation[] { DeepLearningParameters.Activation.Tanh, DeepLearningParameters.Activation.TanhWithDropout, DeepLearningParameters.Activation.Rectifier, DeepLearningParameters.Activation.RectifierWithDropout, DeepLearningParameters.Activation.Maxout, DeepLearningParameters.Activation.MaxoutWithDropout }) {
boolean reproducible = false;
switch(dist) {
case tweedie:
case gamma:
case poisson:
//don't remember why - probably to force stability
reproducible = true;
default:
}
for (boolean load_balance : new boolean[] { true, false }) {
for (boolean shuffle : new boolean[] { true, false }) {
for (boolean balance_classes : new boolean[] { true, false }) {
for (ClassSamplingMethod csm : new ClassSamplingMethod[] { ClassSamplingMethod.Stratified, ClassSamplingMethod.Uniform }) {
for (int scoretraining : new int[] { 200, 20, 0 }) {
for (int scorevalidation : new int[] { 200, 20, 0 }) {
for (int vf : new int[] { //no validation
0, //same as source
1, //different validation frame
-1 }) {
for (int n_folds : new int[] { 0, 2 }) {
//FIXME: Add back
if (n_folds > 0 && balance_classes)
continue;
for (boolean overwrite_with_best_model : new boolean[] { false, true }) {
for (int train_samples_per_iteration : new int[] { //auto-tune
-2, //N epochs per iteration
-1, //1 epoch per iteration
0, // <1 epoch per iteration
rng.nextInt(200), //>1 epoch per iteration
500 }) {
DeepLearningModel model1 = null, model2 = null;
count++;
if (fraction < rng.nextFloat())
continue;
try {
Log.info("**************************)");
Log.info("Starting test #" + count);
Log.info("**************************)");
final double epochs = 7 + rng.nextDouble() + rng.nextInt(4);
final int[] hidden = new int[] { 3 + rng.nextInt(4), 3 + rng.nextInt(6) };
final double[] hidden_dropout_ratios = activation.name().contains("Hidden") ? new double[] { rng.nextFloat(), rng.nextFloat() } : null;
//no validation
Frame valid = null;
if (//use the same frame for validation
vf == 1)
//use the same frame for validation
valid = frame;
else if (vf == -1)
//different validation frame (here: from the same file)
valid = vframe;
long myseed = rng.nextLong();
boolean replicate2 = rng.nextBoolean();
boolean elastic_averaging2 = rng.nextBoolean();
// build the model, with all kinds of shuffling/rebalancing/sampling
DeepLearningParameters p = new DeepLearningParameters();
{
Log.info("Using seed: " + myseed);
p._train = frame._key;
p._response_column = respname;
p._valid = valid == null ? null : valid._key;
p._hidden = hidden;
p._input_dropout_ratio = 0.1;
p._hidden_dropout_ratios = hidden_dropout_ratios;
p._activation = activation;
// p.best_model_key = best_model_key;
p._overwrite_with_best_model = overwrite_with_best_model;
p._epochs = epochs;
p._loss = loss;
p._distribution = dist;
p._nfolds = n_folds;
p._seed = myseed;
p._train_samples_per_iteration = train_samples_per_iteration;
p._force_load_balance = load_balance;
p._replicate_training_data = replicate;
p._reproducible = reproducible;
p._shuffle_training_data = shuffle;
p._score_training_samples = scoretraining;
p._score_validation_samples = scorevalidation;
p._classification_stop = -1;
p._regression_stop = -1;
p._stopping_rounds = 0;
p._balance_classes = classification && balance_classes;
p._quiet_mode = true;
p._score_validation_sampling = csm;
p._elastic_averaging = elastic_averaging;
// Log.info(new String(p.writeJSON(new AutoBuffer()).buf()).replace(",","\n"));
DeepLearning dl = new DeepLearning(p, Key.<DeepLearningModel>make(Key.make().toString() + "first"));
try {
model1 = dl.trainModel().get();
checkSums.add(model1.checksum());
testcount++;
} catch (Throwable t) {
model1 = DKV.getGet(dl.dest());
if (model1 != null)
Assert.assertTrue(model1._output._job.isCrashed());
throw t;
}
Log.info("Trained for " + model1.epoch_counter + " epochs.");
assert (((p._train_samples_per_iteration <= 0 || p._train_samples_per_iteration >= frame.numRows()) && model1.epoch_counter > epochs) || Math.abs(model1.epoch_counter - epochs) / epochs < 0.20);
// check that iteration is of the expected length - check via when first scoring happens
if (p._train_samples_per_iteration == 0) {
// no sampling - every node does its share of the full data
if (!replicate)
assert ((double) model1._output._scoring_history.get(1, 3) == 1);
else
assert ((double) model1._output._scoring_history.get(1, 3) > 0.7 && (double) model1._output._scoring_history.get(1, 3) < 1.3) : ("First scoring at " + model1._output._scoring_history.get(1, 3) + " epochs, should be closer to 1!" + "\n" + model1.toString());
} else if (p._train_samples_per_iteration == -1) {
// no sampling - every node does its share of the full data
if (!replicate)
assert ((double) model1._output._scoring_history.get(1, 3) == 1);
else // every node passes over the full dataset
{
if (!reproducible)
assert ((double) model1._output._scoring_history.get(1, 3) == H2O.CLOUD.size());
}
}
if (n_folds != 0) {
assert (model1._output._cross_validation_metrics != null);
} else {
assert (model1._output._cross_validation_metrics == null);
}
}
assert (model1.model_info().get_params()._l1 == 0);
assert (model1.model_info().get_params()._l2 == 0);
Assert.assertFalse(model1._output._job.isCrashed());
if (n_folds != 0)
continue;
// Do some more training via checkpoint restart
// For n_folds, continue without n_folds (not yet implemented) - from now on, model2 will have n_folds=0...
DeepLearningParameters p2 = new DeepLearningParameters();
Assert.assertTrue(model1.model_info().get_processed_total() >= frame.numRows() * epochs);
{
p2._checkpoint = model1._key;
p2._distribution = dist;
p2._loss = loss;
p2._nfolds = n_folds;
p2._train = frame._key;
p2._activation = activation;
p2._hidden = hidden;
p2._valid = valid == null ? null : valid._key;
p2._l1 = 1e-3;
p2._l2 = 1e-3;
p2._reproducible = reproducible;
p2._response_column = respname;
p2._overwrite_with_best_model = overwrite_with_best_model;
p2._quiet_mode = true;
//final amount of training epochs
p2._epochs = 2 * epochs;
p2._replicate_training_data = replicate2;
p2._stopping_rounds = 0;
p2._seed = myseed;
// p2._loss = loss; //fall back to default
// p2._distribution = dist; //fall back to default
p2._train_samples_per_iteration = train_samples_per_iteration;
p2._balance_classes = classification && balance_classes;
p2._elastic_averaging = elastic_averaging2;
DeepLearning dl = new DeepLearning(p2);
try {
model2 = dl.trainModel().get();
} catch (Throwable t) {
model2 = DKV.getGet(dl.dest());
if (model2 != null)
Assert.assertTrue(model2._output._job.isCrashed());
throw t;
}
}
Assert.assertTrue(model1._output._job.isDone());
Assert.assertTrue(model2._output._job.isDone());
assert (model1._parms != p2);
assert (model1.model_info().get_params() != model2.model_info().get_params());
assert (model1.model_info().get_params()._l1 == 0);
assert (model1.model_info().get_params()._l2 == 0);
if (!overwrite_with_best_model)
Assert.assertTrue(model2.model_info().get_processed_total() >= frame.numRows() * 2 * epochs);
assert (p != p2);
assert (p != model1.model_info().get_params());
assert (p2 != model2.model_info().get_params());
if (p._loss == DeepLearningParameters.Loss.Automatic) {
assert (p2._loss == DeepLearningParameters.Loss.Automatic);
// assert(model1.model_info().get_params()._loss != DeepLearningParameters.Loss.Automatic);
// assert(model2.model_info().get_params()._loss != DeepLearningParameters.Loss.Automatic);
}
assert (p._hidden_dropout_ratios == null);
assert (p2._hidden_dropout_ratios == null);
if (p._activation.toString().contains("WithDropout")) {
assert (model1.model_info().get_params()._hidden_dropout_ratios != null);
assert (model2.model_info().get_params()._hidden_dropout_ratios != null);
assert (Arrays.equals(model1.model_info().get_params()._hidden_dropout_ratios, model2.model_info().get_params()._hidden_dropout_ratios));
}
assert (p._l1 == 0);
assert (p._l2 == 0);
assert (p2._l1 == 1e-3);
assert (p2._l2 == 1e-3);
assert (model1.model_info().get_params()._l1 == 0);
assert (model1.model_info().get_params()._l2 == 0);
assert (model2.model_info().get_params()._l1 == 1e-3);
assert (model2.model_info().get_params()._l2 == 1e-3);
if (valid == null)
valid = frame;
double threshold;
if (model2._output.isClassifier()) {
Frame pred = null;
Vec labels, predlabels, pred2labels;
try {
pred = model2.score(valid);
DKV.put(Key.make("pred"), pred);
// Build a POJO, validate same results
if (!model2.testJavaScoring(valid, pred, 1e-6)) {
model2.testJavaScoring(valid, pred, 1e-6);
}
Assert.assertTrue(model2.testJavaScoring(valid, pred, 1e-6));
hex.ModelMetrics mm = hex.ModelMetrics.getFromDKV(model2, valid);
double error;
// binary
if (model2._output.nclasses() == 2) {
assert (resp == 1);
threshold = mm.auc_obj().defaultThreshold();
error = mm.auc_obj().defaultErr();
// check that auc.cm() is the right CM
Assert.assertEquals(new ConfusionMatrix(mm.auc_obj().defaultCM(), valid.vec(respname).domain()).err(), error, 1e-15);
// check that calcError() is consistent as well (for CM=null, AUC!=null)
Assert.assertEquals(mm.cm().err(), error, 1e-15);
// check that the labels made with the default threshold are consistent with the CM that's reported by the AUC object
labels = valid.vec(respname);
predlabels = pred.vecs()[0];
ConfusionMatrix cm = buildCM(labels, predlabels);
Log.info("CM from pre-made labels:");
Log.info(cm.toASCII());
if (Math.abs(cm.err() - error) > 2e-2) {
ConfusionMatrix cm2 = buildCM(labels, predlabels);
Log.info(cm2.toASCII());
}
Assert.assertEquals(cm.err(), error, 2e-2);
// confirm that orig CM was made with the right threshold
// manually make labels with AUC-given default threshold
String ast = "(as.factor (> (cols pred [2]) " + threshold + "))";
Frame tmp = Rapids.exec(ast).getFrame();
pred2labels = tmp.vecs()[0];
cm = buildCM(labels, pred2labels);
Log.info("CM from self-made labels:");
Log.info(cm.toASCII());
//AUC-given F1-optimal threshold might not reproduce AUC-given CM-error identically, but should match up to 2%
Assert.assertEquals(cm.err(), error, 2e-2);
tmp.delete();
}
DKV.remove(Key.make("pred"));
} finally {
if (pred != null)
pred.delete();
}
} else //classifier
{
Frame pred = null;
try {
pred = model2.score(valid);
// Build a POJO, validate same results
Assert.assertTrue(model2.testJavaScoring(frame, pred, 1e-6));
} finally {
if (pred != null)
pred.delete();
}
}
Log.info("Parameters combination " + count + ": PASS");
} catch (H2OModelBuilderIllegalArgumentException | IllegalArgumentException ex) {
System.err.println(ex);
throw H2O.fail("should not get here");
} catch (RuntimeException t) {
String msg = // this way we evade null messages
"" + t.getMessage() + (t.getCause() == null ? "" : t.getCause().getMessage());
Assert.assertTrue("Unexpected exception " + t + ": " + msg, msg.contains("unstable"));
} catch (AssertionError ae) {
// test assertions should be preserved
throw ae;
} catch (Throwable t) {
t.printStackTrace();
throw new RuntimeException(t);
} finally {
if (model1 != null) {
model1.deleteCrossValidationModels();
model1.delete();
}
if (model2 != null) {
model2.deleteCrossValidationModels();
model2.delete();
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
} finally {
if (frame != null)
frame.delete();
if (vframe != null)
vframe.delete();
}
}
}
Log.info("\n\n=============================================");
Log.info("Tested " + testcount + " out of " + count + " parameter combinations.");
Log.info("=============================================");
if (checkSums.size() != testcount) {
Log.info("Only found " + checkSums.size() + " unique checksums.");
}
Assert.assertTrue(checkSums.size() == testcount);
}
Also used :
LinkedHashSet(java.util.LinkedHashSet)
Frame(water.fvec.Frame)
ConfusionMatrix(hex.ConfusionMatrix)
NFSFileVec(water.fvec.NFSFileVec)
DeepLearningParameters(hex.deeplearning.DeepLearningModel.DeepLearningParameters)
ClassSamplingMethod(hex.deeplearning.DeepLearningModel.DeepLearningParameters.ClassSamplingMethod)
Random(java.util.Random)
H2OModelBuilderIllegalArgumentException(water.exceptions.H2OModelBuilderIllegalArgumentException)
DistributionFamily(hex.genmodel.utils.DistributionFamily)
H2OModelBuilderIllegalArgumentException(water.exceptions.H2OModelBuilderIllegalArgumentException)
NFSFileVec(water.fvec.NFSFileVec)
Vec(water.fvec.Vec)
Example 4 with DeepLearningParameters
use of hex.deeplearning.DeepLearningModel.DeepLearningParameters in project h2o-3 by h2oai.
the class DeepLearningReproducibilityTest method run.
@Test
public void run() {
NFSFileVec ff = TestUtil.makeNfsFileVec("smalldata/junit/weather.csv");
Frame golden = ParseDataset.parse(Key.make("golden.hex"), ff._key);
DeepLearningModel mymodel = null;
Frame train = null;
Frame test = null;
Frame data = null;
Map<Integer, Float> repeatErrs = new TreeMap<>();
int N = 3;
StringBuilder sb = new StringBuilder();
float repro_error = 0;
for (boolean repro : new boolean[] { true, false }) {
Scope.enter();
Frame[] preds = new Frame[N];
long[] checksums = new long[N];
double[] numbers = new double[N];
for (int repeat = 0; repeat < N; ++repeat) {
try {
NFSFileVec file = TestUtil.makeNfsFileVec("smalldata/junit/weather.csv");
data = ParseDataset.parse(Key.make("data.hex"), file._key);
//test parser consistency
Assert.assertTrue(TestUtil.isBitIdentical(data, golden));
// Create holdout test data on clean data (before adding missing values)
train = data;
test = data;
// Build a regularized DL model with polluted training data, score on clean validation set
DeepLearningParameters p = new DeepLearningParameters();
p._train = train._key;
p._valid = test._key;
p._response_column = train.names()[train.names().length - 1];
int ci = train.names().length - 1;
Scope.track(train.replace(ci, train.vecs()[ci].toCategoricalVec()));
DKV.put(train);
//for weather data
p._ignored_columns = new String[] { "EvapMM", "RISK_MM" };
p._activation = DeepLearningParameters.Activation.RectifierWithDropout;
p._hidden = new int[] { 32, 58 };
p._l1 = 1e-5;
p._l2 = 3e-5;
p._seed = 0xbebe;
p._loss = DeepLearningParameters.Loss.CrossEntropy;
p._input_dropout_ratio = 0.2;
p._train_samples_per_iteration = 3;
p._hidden_dropout_ratios = new double[] { 0.4, 0.1 };
p._epochs = 1.32;
// p._nfolds = 2;
p._quiet_mode = true;
p._reproducible = repro;
DeepLearning dl = new DeepLearning(p);
mymodel = dl.trainModel().get();
// Extract the scoring on validation set from the model
preds[repeat] = mymodel.score(test);
for (int i = 0; i < 5; ++i) {
Frame tmp = mymodel.score(test);
Assert.assertTrue("Prediction #" + i + " for repeat #" + repeat + " differs!", TestUtil.isBitIdentical(preds[repeat], tmp));
tmp.delete();
}
Log.info("Prediction:\n" + FrameUtils.chunkSummary(preds[repeat]).toString());
numbers[repeat] = mymodel.model_info().get_weights(0).get(23, 4);
//check that the model state is consistent
checksums[repeat] = mymodel.model_info().checksum_impl();
repeatErrs.put(repeat, mymodel.loss());
} finally {
// cleanup
if (mymodel != null) {
mymodel.delete();
}
if (train != null)
train.delete();
if (test != null)
test.delete();
if (data != null)
data.delete();
}
}
sb.append("Reproducibility: ").append(repro ? "on" : "off").append("\n");
sb.append("Repeat # --> Validation Loss\n");
for (String s : Arrays.toString(repeatErrs.entrySet().toArray()).split(",")) sb.append(s.replace("=", " --> ")).append("\n");
sb.append('\n');
Log.info(sb.toString());
try {
if (repro) {
// check reproducibility
for (double error : numbers) assertTrue(Arrays.toString(numbers), error == numbers[0]);
for (Float error : repeatErrs.values()) assertTrue(error.equals(repeatErrs.get(0)));
for (long cs : checksums) assertTrue(cs == checksums[0]);
for (Frame f : preds) {
// assertTrue(TestUtil.isBitIdentical(f, preds[0])); // PUBDEV-892: This should have passed all the time
for (int i = 0; i < f.vecs().length; ++i) {
//PUBDEV-892: This tolerance should be 1e-15
TestUtil.assertVecEquals(f.vecs()[i], preds[0].vecs()[i], 1e-5);
}
}
repro_error = repeatErrs.get(0);
} else {
// check standard deviation of non-reproducible mode
double mean = 0;
for (Float error : repeatErrs.values()) {
mean += error;
}
mean /= N;
// check non-reproducibility (Hogwild! will never reproduce)
for (int i = 1; i < N; ++i) assertTrue(repeatErrs.get(i) != repeatErrs.get(0));
Log.info("mean error: " + mean);
double stddev = 0;
for (Float error : repeatErrs.values()) {
stddev += (error - mean) * (error - mean);
}
stddev /= N;
stddev = Math.sqrt(stddev);
Log.info("standard deviation: " + stddev);
// assertTrue(stddev < 0.3 / Math.sqrt(N));
Log.info("difference to reproducible mode: " + Math.abs(mean - repro_error) / stddev + " standard deviations");
}
} finally {
for (Frame f : preds) if (f != null)
f.delete();
}
Scope.exit();
}
golden.delete();
}
Also used :
Frame(water.fvec.Frame)
NFSFileVec(water.fvec.NFSFileVec)
DeepLearningParameters(hex.deeplearning.DeepLearningModel.DeepLearningParameters)
Test(org.junit.Test)
Example 5 with DeepLearningParameters
use of hex.deeplearning.DeepLearningModel.DeepLearningParameters in project h2o-3 by h2oai.
the class DeepLearningScoreTest method testPubDev928.
/** Load simple dataset, rebalance to a number of chunks > number of rows, and run deep learning */
@Test
public void testPubDev928() {
// Create rebalanced dataset
Key rebalancedKey = Key.make("rebalanced");
NFSFileVec nfs = TestUtil.makeNfsFileVec("smalldata/logreg/prostate.csv");
Frame fr = ParseDataset.parse(Key.make(), nfs._key);
RebalanceDataSet rb = new RebalanceDataSet(fr, rebalancedKey, (int) (fr.numRows() + 1));
H2O.submitTask(rb);
rb.join();
Frame rebalanced = DKV.get(rebalancedKey).get();
// Assert that there is at least one 0-len chunk
assertZeroLengthChunk("Rebalanced dataset should contain at least one 0-len chunk!", rebalanced.anyVec());
DeepLearningModel dlModel = null;
try {
// Launch Deep Learning
DeepLearningParameters dlParams = new DeepLearningParameters();
dlParams._train = rebalancedKey;
dlParams._epochs = 5;
dlParams._response_column = "CAPSULE";
dlModel = new DeepLearning(dlParams).trainModel().get();
} finally {
fr.delete();
rebalanced.delete();
if (dlModel != null)
dlModel.delete();
}
}
Also used :
Frame(water.fvec.Frame)
RebalanceDataSet(water.fvec.RebalanceDataSet)
NFSFileVec(water.fvec.NFSFileVec)
DeepLearningParameters(hex.deeplearning.DeepLearningModel.DeepLearningParameters)
Key(water.Key)
Test(org.junit.Test)
Aggregations
DeepLearningParameters (hex.deeplearning.DeepLearningModel.DeepLearningParameters)58
Frame (water.fvec.Frame)54
Test (org.junit.Test)52
NFSFileVec (water.fvec.NFSFileVec)26
Vec (water.fvec.Vec)22
hex (hex)5
Ignore (org.junit.Ignore)5
DistributionFamily (hex.genmodel.utils.DistributionFamily)4
Random (java.util.Random)4
H2OIllegalArgumentException (water.exceptions.H2OIllegalArgumentException)3
DataInfo (hex.DataInfo)2
File (java.io.File)2
Key (water.Key)2
H2OModelBuilderIllegalArgumentException (water.exceptions.H2OModelBuilderIllegalArgumentException)2
PrettyPrint (water.util.PrettyPrint)2
ConfusionMatrix (hex.ConfusionMatrix)1
Distribution (hex.Distribution)1
FrameSplitter (hex.FrameSplitter)1
FrameTask (hex.FrameTask)1
ModelMetricsBinomial (hex.ModelMetricsBinomial)1
