2025-01-03 16:11:53 +01:00
17 changed files with 167 additions and 111 deletions
--- a/README.md
+++ b/README.md
@ -26,7 +26,7 @@ These are the main components of the Recommendation Algorithm included in this r
 | Tweet mixing & filtering | [home-mixer](home-mixer/README.md) | Main service used to construct and serve the Home Timeline. Built on [product-mixer](product-mixer/README.md). |
 |                          | [visibility-filters](visibilitylib/README.md) | Responsible for filtering Twitter content to support legal compliance, improve product quality, increase user trust, protect revenue through the use of hard-filtering, visible product treatments, and coarse-grained downranking. |
 |                          | [timelineranker](timelineranker/README.md) | Legacy service which provides relevance-scored tweets from the Earlybird Search Index and UTEG service. |
-| Software framework | [navi](navi/README.md) | High performance, machine learning model serving written in Rust. |
+| Software framework | [navi](navi/navi/README.md) | High performance, machine learning model serving written in Rust. |
 |                    | [product-mixer](product-mixer/README.md) | Software framework for building feeds of content. |
 |                    | [twml](twml/README.md) | Legacy machine learning framework built on TensorFlow v1. |

--- a/cr-mixer/server/src/main/scala/com/twitter/cr_mixer/similarity_engine/EarlybirdTensorflowBasedSimilarityEngine.scala
+++ b/cr-mixer/server/src/main/scala/com/twitter/cr_mixer/similarity_engine/EarlybirdTensorflowBasedSimilarityEngine.scala
@ -6,6 +6,8 @@ import com.twitter.search.earlybird.thriftscala.EarlybirdService
 import com.twitter.search.earlybird.thriftscala.ThriftSearchQuery
 import com.twitter.util.Time
 import com.twitter.search.common.query.thriftjava.thriftscala.CollectorParams
+import com.twitter.search.common.ranking.thriftscala.ThriftAgeDecayRankingParams
+import com.twitter.search.common.ranking.thriftscala.ThriftLinearFeatureRankingParams
 import com.twitter.search.common.ranking.thriftscala.ThriftRankingParams
 import com.twitter.search.common.ranking.thriftscala.ThriftScoringFunctionType
 import com.twitter.search.earlybird.thriftscala.ThriftSearchRelevanceOptions
@ -95,7 +97,7 @@ object EarlybirdTensorflowBasedSimilarityEngine {
      // Whether to collect conversation IDs. Remove it for now.
      // collectConversationId = Gate.True(), // true for Home
      rankingMode = ThriftSearchRankingMode.Relevance,
-      relevanceOptions = Some(getRelevanceOptions),
+      relevanceOptions = Some(getRelevanceOptions(query.useTensorflowRanking)),
      collectorParams = Some(
        CollectorParams(
          // numResultsToReturn defines how many results each EB shard will return to search root
@ -114,11 +116,13 @@ object EarlybirdTensorflowBasedSimilarityEngine {
  // The specific values of recap relevance/reranking options correspond to
  // experiment: enable_recap_reranking_2988,timeline_internal_disable_recap_filter
  // bucket    : enable_rerank,disable_filter
-  private def getRelevanceOptions: ThriftSearchRelevanceOptions = {
+  private def getRelevanceOptions(useTensorflowRanking: Boolean): ThriftSearchRelevanceOptions = {
    ThriftSearchRelevanceOptions(
      proximityScoring = true,
      maxConsecutiveSameUser = Some(2),
-      rankingParams = Some(getTensorflowBasedRankingParams),
+      rankingParams =
+        if (useTensorflowRanking) Some(getTensorflowBasedRankingParams)
+        else Some(getLinearRankingParams),
      maxHitsToProcess = Some(500),
      maxUserBlendCount = Some(3),
      proximityPhraseWeight = 9.0,
@ -127,12 +131,41 @@ object EarlybirdTensorflowBasedSimilarityEngine {
  }

  private def getTensorflowBasedRankingParams: ThriftRankingParams = {
-    ThriftRankingParams(
+    getLinearRankingParams.copy(
      `type` = Some(ThriftScoringFunctionType.TensorflowBased),
      selectedTensorflowModel = Some("timelines_rectweet_replica"),
-      minScore = -1.0e100,
      applyBoosts = false,
      authorSpecificScoreAdjustments = None
    )
  }
+
+  private def getLinearRankingParams: ThriftRankingParams = {
+    ThriftRankingParams(
+      `type` = Some(ThriftScoringFunctionType.Linear),
+      minScore = -1.0e100,
+      retweetCountParams = Some(ThriftLinearFeatureRankingParams(weight = 20.0)),
+      replyCountParams = Some(ThriftLinearFeatureRankingParams(weight = 1.0)),
+      reputationParams = Some(ThriftLinearFeatureRankingParams(weight = 0.2)),
+      luceneScoreParams = Some(ThriftLinearFeatureRankingParams(weight = 2.0)),
+      textScoreParams = Some(ThriftLinearFeatureRankingParams(weight = 0.18)),
+      urlParams = Some(ThriftLinearFeatureRankingParams(weight = 2.0)),
+      isReplyParams = Some(ThriftLinearFeatureRankingParams(weight = 1.0)),
+      favCountParams = Some(ThriftLinearFeatureRankingParams(weight = 30.0)),
+      langEnglishUIBoost = 0.5,
+      langEnglishTweetBoost = 0.2,
+      langDefaultBoost = 0.02,
+      unknownLanguageBoost = 0.05,
+      offensiveBoost = 0.1,
+      inTrustedCircleBoost = 3.0,
+      multipleHashtagsOrTrendsBoost = 0.6,
+      inDirectFollowBoost = 4.0,
+      tweetHasTrendBoost = 1.1,
+      selfTweetBoost = 2.0,
+      tweetHasImageUrlBoost = 2.0,
+      tweetHasVideoUrlBoost = 2.0,
+      useUserLanguageInfo = true,
+      ageDecayParams = Some(ThriftAgeDecayRankingParams(slope = 0.005, base = 1.0))
+    )
+  }
+
 }
--- a/home-mixer/server/src/main/scala/com/twitter/home_mixer/util/earlybird/RelevanceSearchUtil.scala
+++ b/home-mixer/server/src/main/scala/com/twitter/home_mixer/util/earlybird/RelevanceSearchUtil.scala
@ -15,6 +15,28 @@ object RelevanceSearchUtil {
      `type` = Some(scr.ThriftScoringFunctionType.TensorflowBased),
      selectedTensorflowModel = Some("timelines_rectweet_replica"),
      minScore = -1.0e100,
+      retweetCountParams = Some(scr.ThriftLinearFeatureRankingParams(weight = 20.0)),
+      replyCountParams = Some(scr.ThriftLinearFeatureRankingParams(weight = 1.0)),
+      reputationParams = Some(scr.ThriftLinearFeatureRankingParams(weight = 0.2)),
+      luceneScoreParams = Some(scr.ThriftLinearFeatureRankingParams(weight = 2.0)),
+      textScoreParams = Some(scr.ThriftLinearFeatureRankingParams(weight = 0.18)),
+      urlParams = Some(scr.ThriftLinearFeatureRankingParams(weight = 2.0)),
+      isReplyParams = Some(scr.ThriftLinearFeatureRankingParams(weight = 1.0)),
+      favCountParams = Some(scr.ThriftLinearFeatureRankingParams(weight = 30.0)),
+      langEnglishUIBoost = 0.5,
+      langEnglishTweetBoost = 0.2,
+      langDefaultBoost = 0.02,
+      unknownLanguageBoost = 0.05,
+      offensiveBoost = 0.1,
+      inTrustedCircleBoost = 3.0,
+      multipleHashtagsOrTrendsBoost = 0.6,
+      inDirectFollowBoost = 4.0,
+      tweetHasTrendBoost = 1.1,
+      selfTweetBoost = 2.0,
+      tweetHasImageUrlBoost = 2.0,
+      tweetHasVideoUrlBoost = 2.0,
+      useUserLanguageInfo = true,
+      ageDecayParams = Some(scr.ThriftAgeDecayRankingParams(slope = 0.005, base = 1.0)),
      selectedModels = Some(Map("home_mixer_unified_engagement_prod" -> 1.0)),
      applyBoosts = false,
    )
--- a/visibilitylib/src/main/resources/config/com/twitter/visibility/decider.yml
+++ b/visibilitylib/src/main/resources/config/com/twitter/visibility/decider.yml
@ -494,9 +494,6 @@ visibility_library_enable_trends_representative_tweet_safety_level:
 visibility_library_enable_trusted_friends_user_list_safety_level:
  default_availability: 10000

-visibility_library_enable_twitter_delegate_user_list_safety_level:
-  default_availability: 10000
-
 visibility_library_enable_tweet_detail_safety_level:
  default_availability: 10000

@ -761,7 +758,7 @@ visibility_library_enable_short_circuiting_from_blender_visibility_library:
 visibility_library_enable_short_circuiting_from_search_visibility_library:
  default_availability: 0

-visibility_library_enable_nsfw_text_high_precision_drop_rule:
+visibility_library_enable_nsfw_text_topics_drop_rule:
  default_availability: 10000

 visibility_library_enable_spammy_tweet_rule_verdict_logging:
--- a/visibilitylib/src/main/scala/com/twitter/visibility/configapi/configs/DeciderKey.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/configapi/configs/DeciderKey.scala
@ -535,9 +535,6 @@ private[visibility] object DeciderKey extends DeciderKeyEnum {
  val EnableTrustedFriendsUserListSafetyLevel: Value = Value(
    "visibility_library_enable_trusted_friends_user_list_safety_level"
  )
-  val EnableTwitterDelegateUserListSafetyLevel: Value = Value(
-    "visibility_library_enable_twitter_delegate_user_list_safety_level"
-  )
  val EnableTweetDetailSafetyLevel: Value = Value(
    "visibility_library_enable_tweet_detail_safety_level"
  )
@ -872,8 +869,8 @@ private[visibility] object DeciderKey extends DeciderKeyEnum {
    "visibility_library_enable_short_circuiting_from_search_visibility_library"
  )

-  val EnableNsfwTextHighPrecisionDropRule: Value = Value(
-    "visibility_library_enable_nsfw_text_high_precision_drop_rule"
+  val EnableNsfwTextTopicsDropRule: Value = Value(
+    "visibility_library_enable_nsfw_text_topics_drop_rule"
  )

  val EnableSpammyTweetRuleVerdictLogging: Value = Value(
--- a/visibilitylib/src/main/scala/com/twitter/visibility/configapi/configs/VisibilityDeciders.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/configapi/configs/VisibilityDeciders.scala
@ -198,7 +198,6 @@ private[visibility] object VisibilityDeciders {
    TopicRecommendations -> DeciderKey.EnableTopicRecommendationsSafetyLevel,
    TrendsRepresentativeTweet -> DeciderKey.EnableTrendsRepresentativeTweetSafetyLevel,
    TrustedFriendsUserList -> DeciderKey.EnableTrustedFriendsUserListSafetyLevel,
-    TwitterDelegateUserList -> DeciderKey.EnableTwitterDelegateUserListSafetyLevel,
    TweetDetail -> DeciderKey.EnableTweetDetailSafetyLevel,
    TweetDetailNonToo -> DeciderKey.EnableTweetDetailNonTooSafetyLevel,
    TweetEngagers -> DeciderKey.EnableTweetEngagersSafetyLevel,
@ -288,7 +287,7 @@ private[visibility] object VisibilityDeciders {
    RuleParams.EnableDropAllTrustedFriendsTweetsRuleParam -> DeciderKey.EnableDropAllTrustedFriendsTweetsRule,
    RuleParams.EnableDropTrustedFriendsTweetContentRuleParam -> DeciderKey.EnableDropTrustedFriendsTweetContentRule,
    RuleParams.EnableDropAllCollabInvitationTweetsRuleParam -> DeciderKey.EnableDropCollabInvitationTweetsRule,
-    RuleParams.EnableNsfwTextHighPrecisionDropRuleParam -> DeciderKey.EnableNsfwTextHighPrecisionDropRule,
+    RuleParams.EnableNsfwTextTopicsDropRuleParam -> DeciderKey.EnableNsfwTextTopicsDropRule,
    RuleParams.EnableLikelyIvsUserLabelDropRule -> DeciderKey.EnableLikelyIvsUserLabelDropRule,
    RuleParams.EnableCardUriRootDomainCardDenylistRule -> DeciderKey.EnableCardUriRootDomainDenylistRule,
    RuleParams.EnableCommunityNonMemberPollCardRule -> DeciderKey.EnableCommunityNonMemberPollCardRule,
--- a/visibilitylib/src/main/scala/com/twitter/visibility/configapi/params/RuleParams.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/configapi/params/RuleParams.scala
@ -85,7 +85,7 @@ private[visibility] object RuleParams {

  object EnableDropAllCollabInvitationTweetsRuleParam extends RuleParam(false)

-  object EnableNsfwTextHighPrecisionDropRuleParam extends RuleParam(false)
+  object EnableNsfwTextTopicsDropRuleParam extends RuleParam(false)

  object EnableLikelyIvsUserLabelDropRule extends RuleParam(false)

--- a/visibilitylib/src/main/scala/com/twitter/visibility/configapi/params/SafetyLevelParams.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/configapi/params/SafetyLevelParams.scala
@ -186,7 +186,6 @@ private[visibility] object SafetyLevelParams {
  object EnableTopicRecommendationsSafetyLevelParam extends SafetyLevelParam(false)
  object EnableTrendsRepresentativeTweetSafetyLevelParam extends SafetyLevelParam(false)
  object EnableTrustedFriendsUserListSafetyLevelParam extends SafetyLevelParam(false)
-  object EnableTwitterDelegateUserListSafetyLevelParam extends SafetyLevelParam(false)
  object EnableTweetDetailSafetyLevelParam extends SafetyLevelParam(false)
  object EnableTweetDetailNonTooSafetyLevelParam extends SafetyLevelParam(false)
  object EnableTweetDetailWithInjectionsHydrationSafetyLevelParam extends SafetyLevelParam(false)
--- a/visibilitylib/src/main/scala/com/twitter/visibility/engine/VisibilityRuleEngine.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/engine/VisibilityRuleEngine.scala
@ -143,7 +143,7 @@ class VisibilityRuleEngine private[VisibilityRuleEngine] (
              builder.withRuleResult(rule, RuleResult(builder.verdict, ShortCircuited))
            } else {

-              if (failedFeatureDependencies.nonEmpty && rule.fallbackActionBuilder.nonEmpty) {
+              if (rule.fallbackActionBuilder.nonEmpty) {
                metricsRecorder.recordRuleFallbackAction(rule.name)
              }

--- a/visibilitylib/src/main/scala/com/twitter/visibility/models/SafetyLevel.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/models/SafetyLevel.scala
@ -194,7 +194,6 @@ object SafetyLevel {
    ThriftSafetyLevel.TopicsLandingPageTopicRecommendations -> TopicsLandingPageTopicRecommendations,
    ThriftSafetyLevel.TrendsRepresentativeTweet -> TrendsRepresentativeTweet,
    ThriftSafetyLevel.TrustedFriendsUserList -> TrustedFriendsUserList,
-    ThriftSafetyLevel.TwitterDelegateUserList -> TwitterDelegateUserList,
    ThriftSafetyLevel.GryphonDecksAndColumns -> GryphonDecksAndColumns,
    ThriftSafetyLevel.TweetDetail -> TweetDetail,
    ThriftSafetyLevel.TweetDetailNonToo -> TweetDetailNonToo,
@ -773,9 +772,6 @@ object SafetyLevel {
  case object TrustedFriendsUserList extends SafetyLevel {
    override val enabledParam: SafetyLevelParam = EnableTrustedFriendsUserListSafetyLevelParam
  }
-  case object TwitterDelegateUserList extends SafetyLevel {
-    override val enabledParam: SafetyLevelParam = EnableTwitterDelegateUserListSafetyLevelParam
-  }
  case object TweetDetail extends SafetyLevel {
    override val enabledParam: SafetyLevelParam = EnableTweetDetailSafetyLevelParam
  }
--- a/visibilitylib/src/main/scala/com/twitter/visibility/models/SafetyLevelGroup.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/models/SafetyLevelGroup.scala
@ -379,6 +379,13 @@ object SafetyLevelGroup {
    )
  }

+  case object ProfileMixer extends SafetyLevelGroup {
+    override val levels: Set[SafetyLevel] = Set(
+      ProfileMixerMedia,
+      ProfileMixerFavorites,
+    )
+  }
+
  case object Reactions extends SafetyLevelGroup {
    override val levels: Set[SafetyLevel] = Set(
      SignalsReactions,
@ -509,10 +516,6 @@ object SafetyLevelGroup {
      SafetyLevel.TimelineProfile,
      TimelineProfileAll,
      TimelineProfileSpaces,
-      TimelineMedia,
-      ProfileMixerMedia,
-      TimelineFavorites,
-      ProfileMixerFavorites
    )
  }

--- a/visibilitylib/src/main/scala/com/twitter/visibility/models/SpaceSafetyLabelType.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/models/SpaceSafetyLabelType.scala
@ -36,8 +36,8 @@ object SpaceSafetyLabelType extends SafetyLabelType {
    s.SpaceSafetyLabelType.HatefulHighRecall -> HatefulHighRecall,
    s.SpaceSafetyLabelType.ViolenceHighRecall -> ViolenceHighRecall,
    s.SpaceSafetyLabelType.HighToxicityModelScore -> HighToxicityModelScore,
-    s.SpaceSafetyLabelType.DeprecatedSpaceSafetyLabel14 -> Deprecated,
-    s.SpaceSafetyLabelType.DeprecatedSpaceSafetyLabel15 -> Deprecated,
+    s.SpaceSafetyLabelType.UkraineCrisisTopic -> UkraineCrisisTopic,
+    s.SpaceSafetyLabelType.DoNotPublicPublish -> DoNotPublicPublish,
    s.SpaceSafetyLabelType.Reserved16 -> Deprecated,
    s.SpaceSafetyLabelType.Reserved17 -> Deprecated,
    s.SpaceSafetyLabelType.Reserved18 -> Deprecated,
@ -69,6 +69,10 @@ object SpaceSafetyLabelType extends SafetyLabelType {
  case object ViolenceHighRecall extends SpaceSafetyLabelType
  case object HighToxicityModelScore extends SpaceSafetyLabelType

+  case object UkraineCrisisTopic extends SpaceSafetyLabelType
+
+  case object DoNotPublicPublish extends SpaceSafetyLabelType
+
  case object Deprecated extends SpaceSafetyLabelType
  case object Unknown extends SpaceSafetyLabelType

--- a/visibilitylib/src/main/scala/com/twitter/visibility/rules/FreedomOfSpeechNotReach.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/rules/FreedomOfSpeechNotReach.scala
@ -3,7 +3,6 @@ package com.twitter.visibility.rules
 import com.twitter.spam.rtf.thriftscala.SafetyResultReason
 import com.twitter.util.Memoize
 import com.twitter.visibility.common.actions.AppealableReason
-import com.twitter.visibility.common.actions.AvoidReason.MightNotBeSuitableForAds
 import com.twitter.visibility.common.actions.LimitedEngagementReason
 import com.twitter.visibility.common.actions.SoftInterventionDisplayType
 import com.twitter.visibility.common.actions.SoftInterventionReason
@ -441,6 +440,36 @@ object FreedomOfSpeechNotReachActions {
    }
  }

+  case class ConversationSectionAbusiveQualityAction(
+    violationLevel: ViolationLevel = DefaultViolationLevel)
+      extends FreedomOfSpeechNotReachActionBuilder[ConversationSectionAbusiveQuality.type] {
+
+    override def actionType: Class[_] = ConversationSectionAbusiveQuality.getClass
+
+    override val actionSeverity = 5
+    private def toRuleResult: Reason => RuleResult = Memoize { r =>
+      RuleResult(ConversationSectionAbusiveQuality, Evaluated)
+    }
+
+    def build(evaluationContext: EvaluationContext, featureMap: Map[Feature[_], _]): RuleResult = {
+      val appealableReason =
+        FreedomOfSpeechNotReach.extractTweetSafetyLabel(featureMap).map(_.labelType) match {
+          case Some(label) =>
+            FreedomOfSpeechNotReach.eligibleTweetSafetyLabelTypesToAppealableReason(
+              label,
+              violationLevel)
+          case _ =>
+            AppealableReason.Unspecified(violationLevel.level)
+        }
+
+      toRuleResult(Reason.fromAppealableReason(appealableReason))
+    }
+
+    override def withViolationLevel(violationLevel: ViolationLevel) = {
+      copy(violationLevel = violationLevel)
+    }
+  }
+
  case class SoftInterventionAvoidAction(violationLevel: ViolationLevel = DefaultViolationLevel)
      extends FreedomOfSpeechNotReachActionBuilder[TweetInterstitial] {

@ -633,9 +662,6 @@ object FreedomOfSpeechNotReachRules {

    override def enabled: Seq[RuleParam[Boolean]] =
      Seq(EnableFosnrRuleParam, FosnrRulesEnabledParam)
-
-    override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-      new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
  }

  case class ViewerIsNonFollowerNonAuthorAndTweetHasViolationOfLevel(
@ -652,9 +678,6 @@ object FreedomOfSpeechNotReachRules {

    override def enabled: Seq[RuleParam[Boolean]] =
      Seq(EnableFosnrRuleParam, FosnrRulesEnabledParam)
-
-    override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-      new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
  }

  case class ViewerIsNonAuthorAndTweetHasViolationOfLevel(
@ -669,9 +692,6 @@ object FreedomOfSpeechNotReachRules {

    override def enabled: Seq[RuleParam[Boolean]] =
      Seq(EnableFosnrRuleParam, FosnrRulesEnabledParam)
-
-    override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-      new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
  }

  case object TweetHasViolationOfAnyLevelFallbackDropRule
--- a/visibilitylib/src/main/scala/com/twitter/visibility/rules/RuleBase.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/rules/RuleBase.scala
@ -188,7 +188,6 @@ object RuleBase {
    TopicRecommendations -> TopicRecommendationsPolicy,
    TrendsRepresentativeTweet -> TrendsRepresentativeTweetPolicy,
    TrustedFriendsUserList -> TrustedFriendsUserListPolicy,
-    TwitterDelegateUserList -> TwitterDelegateUserListPolicy,
    TweetDetail -> TweetDetailPolicy,
    TweetDetailNonToo -> TweetDetailNonTooPolicy,
    TweetDetailWithInjectionsHydration -> TweetDetailWithInjectionsHydrationPolicy,
--- a/visibilitylib/src/main/scala/com/twitter/visibility/rules/TweetLabelRules.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/rules/TweetLabelRules.scala
@ -144,9 +144,6 @@ object NsfwCardImageAvoidAllUsersTweetLabelRule
      action = Avoid(Some(AvoidReason.ContainsNsfwMedia)),
    ) {
  override def enabled: Seq[RuleParam[Boolean]] = Seq(EnableAvoidNsfwRulesParam)
-
-  override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-    new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
 }

 object NsfwCardImageAvoidAdPlacementAllUsersTweetLabelRule
@ -250,9 +247,6 @@ object GoreAndViolenceHighPrecisionAvoidAllUsersTweetLabelRule
      TweetSafetyLabelType.GoreAndViolenceHighPrecision
    ) {
  override def enabled: Seq[RuleParam[Boolean]] = Seq(EnableAvoidNsfwRulesParam)
-
-  override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-    new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
 }

 object GoreAndViolenceHighPrecisionAllUsersTweetLabelRule
@ -272,9 +266,6 @@ object NsfwReportedHeuristicsAvoidAllUsersTweetLabelRule
      TweetSafetyLabelType.NsfwReportedHeuristics
    ) {
  override def enabled: Seq[RuleParam[Boolean]] = Seq(EnableAvoidNsfwRulesParam)
-
-  override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-    new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
 }

 object NsfwReportedHeuristicsAvoidAdPlacementAllUsersTweetLabelRule
@ -283,9 +274,6 @@ object NsfwReportedHeuristicsAvoidAdPlacementAllUsersTweetLabelRule
      TweetSafetyLabelType.NsfwReportedHeuristics
    ) {
  override def enabled: Seq[RuleParam[Boolean]] = Seq(EnableAvoidNsfwRulesParam)
-
-  override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-    new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
 }

 object NsfwReportedHeuristicsAllUsersTweetLabelRule
@ -306,9 +294,6 @@ object GoreAndViolenceReportedHeuristicsAvoidAllUsersTweetLabelRule
      TweetSafetyLabelType.GoreAndViolenceReportedHeuristics
    ) {
  override def enabled: Seq[RuleParam[Boolean]] = Seq(EnableAvoidNsfwRulesParam)
-
-  override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-    new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
 }

 object GoreAndViolenceReportedHeuristicsAvoidAdPlacementAllUsersTweetLabelRule
@ -317,9 +302,6 @@ object GoreAndViolenceReportedHeuristicsAvoidAdPlacementAllUsersTweetLabelRule
      TweetSafetyLabelType.GoreAndViolenceReportedHeuristics
    ) {
  override def enabled: Seq[RuleParam[Boolean]] = Seq(EnableAvoidNsfwRulesParam)
-
-  override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-    new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
 }

 object GoreAndViolenceHighPrecisionAllUsersTweetLabelDropRule
@ -809,7 +791,7 @@ object SkipTweetDetailLimitedEngagementTweetLabelRule
 object DynamicProductAdDropTweetLabelRule
    extends TweetHasLabelRule(Drop(Unspecified), TweetSafetyLabelType.DynamicProductAd)

-object NsfwTextHighPrecisionTweetLabelDropRule
+object NsfwTextTweetLabelTopicsDropRule
    extends RuleWithConstantAction(
      Drop(Reason.Nsfw),
      And(
@ -821,7 +803,7 @@ object NsfwTextHighPrecisionTweetLabelDropRule
      )
    )
    with DoesLogVerdict {
-  override def enabled: Seq[RuleParam[Boolean]] = Seq(EnableNsfwTextHighPrecisionDropRuleParam)
+  override def enabled: Seq[RuleParam[Boolean]] = Seq(EnableNsfwTextTopicsDropRuleParam)
  override def actionSourceBuilder: Option[RuleActionSourceBuilder] = Some(
    TweetSafetyLabelSourceBuilder(TweetSafetyLabelType.NsfwTextHighPrecision))
 }
@ -850,10 +832,7 @@ object DoNotAmplifyTweetLabelAvoidRule
    extends TweetHasLabelRule(
      Avoid(),
      TweetSafetyLabelType.DoNotAmplify
-    ) {
-  override val fallbackActionBuilder: Option[ActionBuilder[_ <: Action]] = Some(
-    new ConstantActionBuilder(Avoid(Some(MightNotBeSuitableForAds))))
-}
+    )

 object NsfaHighPrecisionTweetLabelAvoidRule
    extends TweetHasLabelRule(
--- a/visibilitylib/src/main/scala/com/twitter/visibility/rules/VisibilityPolicy.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/rules/VisibilityPolicy.scala
@ -776,10 +776,7 @@ case object MagicRecsPolicy
      tweetRules = MagicRecsPolicyOverrides.union(
        RecommendationsPolicy.tweetRules.filterNot(_ == SafetyCrisisLevel3DropRule),
        NotificationsIbisPolicy.tweetRules,
-        Seq(
-          NsfaHighRecallTweetLabelRule,
-          NsfwHighRecallTweetLabelRule,
-          NsfwTextHighPrecisionTweetLabelDropRule),
+        Seq(NsfaHighRecallTweetLabelRule, NsfwHighRecallTweetLabelRule),
        Seq(
          AuthorBlocksViewerDropRule,
          ViewerBlocksAuthorRule,
@ -1174,7 +1171,7 @@ case object ReturningUserExperiencePolicy
        NsfwHighRecallTweetLabelRule,
        NsfwVideoTweetLabelDropRule,
        NsfwTextTweetLabelDropRule,
-        NsfwTextHighPrecisionTweetLabelDropRule,
+        NsfwTextTweetLabelTopicsDropRule,
        SpamHighRecallTweetLabelDropRule,
        DuplicateContentTweetLabelDropRule,
        GoreAndViolenceTweetLabelRule,
@ -1788,14 +1785,6 @@ case object TimelineListsPolicy
            NsfwReportedHeuristicsAllUsersTweetLabelRule,
            GoreAndViolenceReportedHeuristicsAllUsersTweetLabelRule,
            NsfwCardImageAllUsersTweetLabelRule,
-            NsfwHighPrecisionTweetLabelAvoidRule,
-            NsfwHighRecallTweetLabelAvoidRule,
-            GoreAndViolenceHighPrecisionAvoidAllUsersTweetLabelRule,
-            NsfwReportedHeuristicsAvoidAllUsersTweetLabelRule,
-            GoreAndViolenceReportedHeuristicsAvoidAllUsersTweetLabelRule,
-            NsfwCardImageAvoidAllUsersTweetLabelRule,
-            DoNotAmplifyTweetLabelAvoidRule,
-            NsfaHighPrecisionTweetLabelAvoidRule,
          ) ++ LimitedEngagementBaseRules.tweetRules
    )

@ -2143,13 +2132,7 @@ case object TimelineHomePolicy
      userRules = Seq(
        ViewerMutesAuthorRule,
        ViewerBlocksAuthorRule,
-        DeciderableAuthorBlocksViewerDropRule,
-        ProtectedAuthorDropRule,
-        SuspendedAuthorRule,
-        DeactivatedAuthorRule,
-        ErasedAuthorRule,
-        OffboardedAuthorRule,
-        DropTakendownUserRule
+        DeciderableAuthorBlocksViewerDropRule
      ),
      policyRuleParams = SensitiveMediaSettingsTimelineHomeBaseRules.policyRuleParams
    )
@ -2188,13 +2171,7 @@ case object BaseTimelineHomePolicy
      userRules = Seq(
        ViewerMutesAuthorRule,
        ViewerBlocksAuthorRule,
-        DeciderableAuthorBlocksViewerDropRule,
-        ProtectedAuthorDropRule,
-        SuspendedAuthorRule,
-        DeactivatedAuthorRule,
-        ErasedAuthorRule,
-        OffboardedAuthorRule,
-        DropTakendownUserRule
+        DeciderableAuthorBlocksViewerDropRule
      )
    )

@ -2278,13 +2255,7 @@ case object TimelineHomeLatestPolicy
      userRules = Seq(
        ViewerMutesAuthorRule,
        ViewerBlocksAuthorRule,
-        DeciderableAuthorBlocksViewerDropRule,
-        ProtectedAuthorDropRule,
-        SuspendedAuthorRule,
-        DeactivatedAuthorRule,
-        ErasedAuthorRule,
-        OffboardedAuthorRule,
-        DropTakendownUserRule
+        DeciderableAuthorBlocksViewerDropRule
      ),
      policyRuleParams = SensitiveMediaSettingsTimelineHomeBaseRules.policyRuleParams
    )
@ -3312,7 +3283,7 @@ case object TopicRecommendationsPolicy
      tweetRules =
        Seq(
          NsfwHighRecallTweetLabelRule,
-          NsfwTextHighPrecisionTweetLabelDropRule
+          NsfwTextTweetLabelTopicsDropRule
        )
          ++ RecommendationsPolicy.tweetRules,
      userRules = RecommendationsPolicy.userRules
@ -3565,17 +3536,6 @@ case object TrustedFriendsUserListPolicy
      )
    )

-case object TwitterDelegateUserListPolicy
-    extends VisibilityPolicy(
-      userRules = Seq(
-        ViewerBlocksAuthorRule,
-        ViewerIsAuthorDropRule,
-        DeactivatedAuthorRule,
-        AuthorBlocksViewerDropRule
-      ),
-      tweetRules = Seq(DropAllRule)
-    )
-
 case object QuickPromoteTweetEligibilityPolicy
    extends VisibilityPolicy(
      tweetRules = TweetDetailPolicy.tweetRules,
--- a/visibilitylib/src/main/scala/com/twitter/visibility/rules/generators/TweetRuleGenerator.scala
+++ b/visibilitylib/src/main/scala/com/twitter/visibility/rules/generators/TweetRuleGenerator.scala
@ -100,6 +100,30 @@ object TweetRuleGenerator {
          FreedomOfSpeechNotReachActions.SoftInterventionAvoidLimitedEngagementsAction(
            limitedActionStrings = Some(level3LimitedActions))
        )
+        .addSafetyLevelRule(
+          SafetyLevel.TimelineMedia,
+          FreedomOfSpeechNotReachActions
+            .SoftInterventionAvoidLimitedEngagementsAction(limitedActionStrings =
+              Some(level3LimitedActions))
+        )
+        .addSafetyLevelRule(
+          SafetyLevel.ProfileMixerMedia,
+          FreedomOfSpeechNotReachActions
+            .SoftInterventionAvoidLimitedEngagementsAction(limitedActionStrings =
+              Some(level3LimitedActions))
+        )
+        .addSafetyLevelRule(
+          SafetyLevel.TimelineFavorites,
+          FreedomOfSpeechNotReachActions
+            .SoftInterventionAvoidLimitedEngagementsAction(limitedActionStrings =
+              Some(level3LimitedActions))
+        )
+        .addSafetyLevelRule(
+          SafetyLevel.ProfileMixerFavorites,
+          FreedomOfSpeechNotReachActions
+            .SoftInterventionAvoidLimitedEngagementsAction(limitedActionStrings =
+              Some(level3LimitedActions))
+        )
        .build,
      UserType.Author -> TweetVisibilityPolicy
        .builder()
@ -135,6 +159,30 @@ object TweetRuleGenerator {
            .InterstitialLimitedEngagementsAvoidAction(limitedActionStrings =
              Some(level3LimitedActions))
        )
+        .addSafetyLevelRule(
+          SafetyLevel.TimelineMedia,
+          FreedomOfSpeechNotReachActions
+            .InterstitialLimitedEngagementsAvoidAction(limitedActionStrings =
+              Some(level3LimitedActions))
+        )
+        .addSafetyLevelRule(
+          SafetyLevel.ProfileMixerMedia,
+          FreedomOfSpeechNotReachActions
+            .InterstitialLimitedEngagementsAvoidAction(limitedActionStrings =
+              Some(level3LimitedActions))
+        )
+        .addSafetyLevelRule(
+          SafetyLevel.TimelineFavorites,
+          FreedomOfSpeechNotReachActions
+            .InterstitialLimitedEngagementsAvoidAction(limitedActionStrings =
+              Some(level3LimitedActions))
+        )
+        .addSafetyLevelRule(
+          SafetyLevel.ProfileMixerFavorites,
+          FreedomOfSpeechNotReachActions
+            .InterstitialLimitedEngagementsAvoidAction(limitedActionStrings =
+              Some(level3LimitedActions))
+        )
        .build,
    ),
  )