the-algorithm/topic-social-proof/server/src/main/thrift/service.thrift

namespace java com.twitter.tsp.thriftjava
namespace py gen.twitter.tsp
#@namespace scala com.twitter.tsp.thriftscala
#@namespace strato com.twitter.tsp.strato

include "com/twitter/contentrecommender/common.thrift"
include "com/twitter/simclusters_v2/identifier.thrift"
include "com/twitter/simclusters_v2/online_store.thrift"
include "topic_listing.thrift"

enum TopicListingSetting {
  All = 0 // All the existing Semantic Core Entity/Topics. ie., All topics on twitter, and may or may not have been launched yet.
  Followable = 1 // All the topics which the user is allowed to follow. ie., topics that have shipped, and user may or may not be following it.
  Following = 2 // Only topics the user is explicitly following
  ImplicitFollow = 3 // The topics user has not followed but implicitly may follow. ie., Only topics that user has not followed.
} (hasPersonalData='false')


// used to tell Topic Social Proof endpoint which specific filtering can be bypassed
enum TopicSocialProofFilteringBypassMode {
  NotInterested = 0
} (hasPersonalData='false')

struct TopicSocialProofRequest {
  1: required i64 userId(personalDataType = "UserId")
  2: required set<i64> tweetIds(personalDataType = 'TweetId')
  3: required common.DisplayLocation displayLocation
  4: required TopicListingSetting topicListingSetting
  5: required topic_listing.TopicListingViewerContext context
  6: optional set<TopicSocialProofFilteringBypassMode> bypassModes
  7: optional map<i64, set<MetricTag>> tags
}

struct TopicSocialProofOptions {
  1: required i64 userId(personalDataType = "UserId")
  2: required common.DisplayLocation displayLocation
  3: required TopicListingSetting topicListingSetting
  4: required topic_listing.TopicListingViewerContext context
  5: optional set<TopicSocialProofFilteringBypassMode> bypassModes
  6: optional map<i64, set<MetricTag>> tags
}

struct TopicSocialProofResponse {
  1: required map<i64, list<TopicWithScore>> socialProofs
}(hasPersonalData='false')

// Distinguishes between how a topic tweet is generated. Useful for metric tracking and debugging
enum TopicTweetType {
  // CrOON candidates
  UserInterestedIn        = 1
  Twistly                 = 2
  // crTopic candidates
  SkitConsumerEmbeddings  = 100
  SkitProducerEmbeddings  = 101
  SkitHighPrecision       = 102
  SkitInterestBrowser     = 103
  Certo                   = 104
}(persisted='true')

struct TopicWithScore {
  1: required i64 topicId
  2: required double score // score used to rank topics relative to one another
  3: optional TopicTweetType algorithmType // how the topic is generated
  4: optional TopicFollowType topicFollowType // Whether the topic is being explicitly or implicily followed
}(persisted='true', hasPersonalData='false')


struct ScoreKey {
  1: required identifier.EmbeddingType userEmbeddingType
  2: required identifier.EmbeddingType topicEmbeddingType
  3: required online_store.ModelVersion modelVersion
}(persisted='true', hasPersonalData='false')

struct UserTopicScore {
  1: required map<ScoreKey, double> scores
}(persisted='true', hasPersonalData='false')


enum TopicFollowType {
  Following = 1
  ImplicitFollow = 2
}(persisted='true')

// Provide the Tags which provides the Recommended Tweets Source Signal and other context.
// Warning: Please don't use this tag in any ML Features or business logic.
enum MetricTag {
  // Source Signal Tags
  TweetFavorite         = 0
  Retweet               = 1

  UserFollow            = 101
  PushOpenOrNtabClick   = 201

  HomeTweetClick        = 301
  HomeVideoView         = 302
  HomeSongbirdShowMore  = 303


  InterestsRankerRecentSearches = 401  // For Interests Candidate Expansion

  UserInterestedIn      = 501
  MBCG                = 503
  // Other Metric Tags
} (persisted='true', hasPersonalData='true')