Skip to content

Get rid of maxClassesCardinality internal parameter #50418

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Dec 20, 2019
Merged

Get rid of maxClassesCardinality internal parameter #50418

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
19 changes: 4 additions & 15 deletions ...n/java/org/elasticsearch/xpack/core/ml/dataframe/evaluation/classification/Precision.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,6 @@
*/
package org.elasticsearch.xpack.core.ml.dataframe.evaluation.classification;

import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.collect.Tuple;
import org.elasticsearch.common.io.stream.StreamInput;
Expand Down Expand Up @@ -75,25 +74,15 @@ public static Precision fromXContent(XContentParser parser) {
return PARSER.apply(parser, null);
}

private static final int DEFAULT_MAX_CLASSES_CARDINALITY = 1000;
private static final int MAX_CLASSES_CARDINALITY = 1000;

private final int maxClassesCardinality;
private String actualField;
private List<String> topActualClassNames;
private EvaluationMetricResult result;

public Precision() {
this((Integer) null);
}

// Visible for testing
public Precision(@Nullable Integer maxClassesCardinality) {
this.maxClassesCardinality = maxClassesCardinality != null ? maxClassesCardinality : DEFAULT_MAX_CLASSES_CARDINALITY;
}
public Precision() {}

public Precision(StreamInput in) throws IOException {
this.maxClassesCardinality = DEFAULT_MAX_CLASSES_CARDINALITY;
}
public Precision(StreamInput in) throws IOException {}

@Override
public String getWriteableName() {
Expand All @@ -115,7 +104,7 @@ public final Tuple<List<AggregationBuilder>, List<PipelineAggregationBuilder>> a
AggregationBuilders.terms(ACTUAL_CLASSES_NAMES_AGG_NAME)
.field(actualField)
.order(List.of(BucketOrder.count(false), BucketOrder.key(true)))
.size(maxClassesCardinality)),
.size(MAX_CLASSES_CARDINALITY)),
List.of());
}
if (result == null) { // This is step 2
Expand Down
19 changes: 4 additions & 15 deletions ...main/java/org/elasticsearch/xpack/core/ml/dataframe/evaluation/classification/Recall.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,6 @@
*/
package org.elasticsearch.xpack.core.ml.dataframe.evaluation.classification;

import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.collect.Tuple;
import org.elasticsearch.common.io.stream.StreamInput;
Expand Down Expand Up @@ -69,24 +68,14 @@ public static Recall fromXContent(XContentParser parser) {
return PARSER.apply(parser, null);
}

private static final int DEFAULT_MAX_CLASSES_CARDINALITY = 1000;
private static final int MAX_CLASSES_CARDINALITY = 1000;

private final int maxClassesCardinality;
private String actualField;
private EvaluationMetricResult result;

public Recall() {
this((Integer) null);
}

// Visible for testing
public Recall(@Nullable Integer maxClassesCardinality) {
this.maxClassesCardinality = maxClassesCardinality != null ? maxClassesCardinality : DEFAULT_MAX_CLASSES_CARDINALITY;
}
public Recall() {}

public Recall(StreamInput in) throws IOException {
this.maxClassesCardinality = DEFAULT_MAX_CLASSES_CARDINALITY;
}
public Recall(StreamInput in) throws IOException {}

@Override
public String getWriteableName() {
Expand All @@ -110,7 +99,7 @@ public final Tuple<List<AggregationBuilder>, List<PipelineAggregationBuilder>> a
List.of(
AggregationBuilders.terms(BY_ACTUAL_CLASS_AGG_NAME)
.field(actualField)
.size(maxClassesCardinality)
.size(MAX_CLASSES_CARDINALITY)
.subAggregation(AggregationBuilders.avg(PER_ACTUAL_CLASS_RECALL_AGG_NAME).script(script))),
List.of(
PipelineAggregatorBuilders.avgBucket(
Expand Down
24 changes: 21 additions & 3 deletions ...ests/src/test/java/org/elasticsearch/xpack/ml/integration/ClassificationEvaluationIT.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ public class ClassificationEvaluationIT extends MlNativeDataFrameAnalyticsIntegT

@Before
public void setup() {
createAnimalsIndex(ANIMALS_DATA_INDEX);
indexAnimalsData(ANIMALS_DATA_INDEX);
}

Expand Down Expand Up @@ -141,11 +142,12 @@ public void testEvaluate_Precision() {
}

public void testEvaluate_Precision_CardinalityTooHigh() {
indexDistinctAnimals(ANIMALS_DATA_INDEX, 1001);
ElasticsearchStatusException e =
expectThrows(
ElasticsearchStatusException.class,
() -> evaluateDataFrame(
ANIMALS_DATA_INDEX, new Classification(ANIMAL_NAME_FIELD, ANIMAL_NAME_PREDICTION_FIELD, List.of(new Precision(4)))));
ANIMALS_DATA_INDEX, new Classification(ANIMAL_NAME_FIELD, ANIMAL_NAME_PREDICTION_FIELD, List.of(new Precision()))));
assertThat(e.getMessage(), containsString("Cardinality of field [animal_name] is too high"));
}

Expand All @@ -172,11 +174,12 @@ public void testEvaluate_Recall() {
}

public void testEvaluate_Recall_CardinalityTooHigh() {
indexDistinctAnimals(ANIMALS_DATA_INDEX, 1001);
ElasticsearchStatusException e =
expectThrows(
ElasticsearchStatusException.class,
() -> evaluateDataFrame(
ANIMALS_DATA_INDEX, new Classification(ANIMAL_NAME_FIELD, ANIMAL_NAME_PREDICTION_FIELD, List.of(new Recall(4)))));
ANIMALS_DATA_INDEX, new Classification(ANIMAL_NAME_FIELD, ANIMAL_NAME_PREDICTION_FIELD, List.of(new Recall()))));
assertThat(e.getMessage(), containsString("Cardinality of field [animal_name] is too high"));
}

Expand Down Expand Up @@ -281,7 +284,7 @@ public void testEvaluate_ConfusionMatrixMetricWithUserProvidedSize() {
assertThat(confusionMatrixResult.getOtherActualClassCount(), equalTo(2L));
}

private static void indexAnimalsData(String indexName) {
private static void createAnimalsIndex(String indexName) {
client().admin().indices().prepareCreate(indexName)
.addMapping("_doc",
ANIMAL_NAME_FIELD, "type=keyword",
Expand All @@ -291,7 +294,9 @@ private static void indexAnimalsData(String indexName) {
IS_PREDATOR_FIELD, "type=boolean",
IS_PREDATOR_PREDICTION_FIELD, "type=boolean")
.get();
}

private static void indexAnimalsData(String indexName) {
List<String> animalNames = List.of("dog", "cat", "mouse", "ant", "fox");
BulkRequestBuilder bulkRequestBuilder = client().prepareBulk()
.setRefreshPolicy(WriteRequest.RefreshPolicy.IMMEDIATE);
Expand All @@ -315,4 +320,17 @@ private static void indexAnimalsData(String indexName) {
fail("Failed to index data: " + bulkResponse.buildFailureMessage());
}
}

private static void indexDistinctAnimals(String indexName, int distinctAnimalCount) {
BulkRequestBuilder bulkRequestBuilder = client().prepareBulk()
.setRefreshPolicy(WriteRequest.RefreshPolicy.IMMEDIATE);
for (int i = 0; i < distinctAnimalCount; i++) {
bulkRequestBuilder.add(
new IndexRequest(indexName).source(ANIMAL_NAME_FIELD, "animal_" + i, ANIMAL_NAME_PREDICTION_FIELD, randomAlphaOfLength(5)));
}
BulkResponse bulkResponse = bulkRequestBuilder.get();
if (bulkResponse.hasFailures()) {
fail("Failed to index data: " + bulkResponse.buildFailureMessage());
}
}
}