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Fix NDCG for empty search results #29267

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merged 1 commit into from Apr 3, 2018

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commented Mar 27, 2018

Fixes and edge case where DiscountedCumulativeGain can return NaN as
result of the quality metric calculation. This can happen when the
search result set is empty and normalization is used. We should return 0
in this case. Also adding related unit tests to the other two metrics.

Fix NDCG for empty search results
Fixes and edge case where DiscountedCumulativeGain can return NaN as
result of the quality metric calculation. This can happen when the
search result set is empty and normalization is used. We should return 0
in this case. Also adding related unit tests to the other two metrics.
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commented Mar 27, 2018

Pinging @elastic/es-search-aggs

@jimczi

jimczi approved these changes Mar 29, 2018

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LGTM

@cbuescher cbuescher merged commit 2b07f63 into elastic:master Apr 3, 2018

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cbuescher added a commit that referenced this pull request Apr 3, 2018

Fix NDCG for empty search results (#29267)
Fixes and edge case where DiscountedCumulativeGain can return NaN as
result of the quality metric calculation. This can happen when the
search result set is empty and normalization is used. We should return 0
in this case. Also adding related unit tests to the other two metrics.

jasontedor added a commit to jasontedor/elasticsearch that referenced this pull request Apr 3, 2018

Merge branch 'master' into align-thread-pool-info-cat-api
* master:
  Reindex: Fix error in delete-by-query rest spec (elastic#29318)
  Improve similarity integration. (elastic#29187)
  Fix some query extraction bugs. (elastic#29283)
  [Docs] Correct experimental note formatting
  Move Nullable into core (elastic#29341)
  [Docs] Update getting-started.asciidoc (elastic#29294)
  Elasticsearch 6.3.0 is now on Lucene 7.3.
  [DOCS] Refer back to index API for full-document updates in _update API section (elastic#28677)
  Fix missing comma in ingest-node.asciidoc (elastic#29343)
  Improve exception handling on TransportMasterNodeAction (elastic#29314)
  Don't break allocation if resize source index is missing (elastic#29311)
  Use fixture to test repository-s3 plugin (elastic#29296)
  Fix NDCG for empty search results (elastic#29267)
  Pass through script params in scripted metric agg (elastic#29154)
  Fix Eclipse build.
  Upgrade to lucene-7.3.0-snapshot-98a6b3d. (elastic#29298)
  Painless: Remove extraneous INLINE constant. (elastic#29340)

jasontedor added a commit to jasontedor/elasticsearch that referenced this pull request Apr 3, 2018

Merge branch 'master' into byte-size-value-setting-limit-error-message
* master:
  Build: Fix Java9 MR build (elastic#29312)
  Reindex: Fix error in delete-by-query rest spec (elastic#29318)
  Improve similarity integration. (elastic#29187)
  Fix some query extraction bugs. (elastic#29283)
  [Docs] Correct experimental note formatting
  Move Nullable into core (elastic#29341)
  [Docs] Update getting-started.asciidoc (elastic#29294)
  Elasticsearch 6.3.0 is now on Lucene 7.3.
  [DOCS] Refer back to index API for full-document updates in _update API section (elastic#28677)
  Fix missing comma in ingest-node.asciidoc (elastic#29343)
  Improve exception handling on TransportMasterNodeAction (elastic#29314)
  Don't break allocation if resize source index is missing (elastic#29311)
  Use fixture to test repository-s3 plugin (elastic#29296)
  Fix NDCG for empty search results (elastic#29267)
  Pass through script params in scripted metric agg (elastic#29154)
  Fix Eclipse build.
  Upgrade to lucene-7.3.0-snapshot-98a6b3d. (elastic#29298)
  Painless: Remove extraneous INLINE constant. (elastic#29340)
  Remove HTTP max content length leniency (elastic#29337)
  Begin moving XContent to a separate lib/artifact (elastic#29300)

@colings86 colings86 added v7.0.0-beta1 and removed v7.0.0 labels Feb 7, 2019

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