54 lines
2.8 KiB
Scala
54 lines
2.8 KiB
Scala
package com.twitter.timelines.prediction.features.followsource
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import com.twitter.ml.api.Feature
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import com.twitter.dal.personal_data.thriftjava.PersonalDataType._
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import scala.collection.JavaConverters._
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object FollowSourceFeatures {
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// Corresponds to an algorithm constant from com.twitter.hermit.profile.HermitProfileConstants
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val FollowSourceAlgorithm = new Feature.Text("follow_source.algorithm")
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// Type of follow action: one of "unfollow", "follow", "follow_back", "follow_many", "follow_all"
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val FollowAction = new Feature.Text(
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"follow_source.action",
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Set(Follow, PrivateAccountsFollowedBy, PublicAccountsFollowedBy).asJava)
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// Millisecond timestamp when follow occurred
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val FollowTimestamp =
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new Feature.Discrete("follow_source.follow_timestamp", Set(Follow, PrivateTimestamp).asJava)
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// Age of follow (in minutes)
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val FollowAgeMinutes =
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new Feature.Continuous("follow_source.follow_age_minutes", Set(Follow).asJava)
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// Tweet ID of tweet details page from where follow happened (if applicable)
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val FollowCauseTweetId = new Feature.Discrete("follow_source.cause_tweet_id", Set(TweetId).asJava)
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// String representation of follow client (android, web, iphone, etc). Derived from "client"
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// portion of client event namespace.
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val FollowClientId = new Feature.Text("follow_source.client_id", Set(ClientType).asJava)
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// If the follow happens via a profile's Following or Followers,
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// the id of the profile owner is recorded here.
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val FollowAssociationId =
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new Feature.Discrete("follow_source.association_id", Set(Follow, UserId).asJava)
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// The "friendly name" here is computed using FollowSourceUtil.getSource. It represents
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// a grouping on a few client events that reflect where the event occurred. For example,
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// events on the tweet details page are grouped using "tweetDetails":
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// case (Some("web"), Some("permalink"), _, _, _) => "tweetDetails"
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// case (Some("iphone"), Some("tweet"), _, _, _) => "tweetDetails"
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// case (Some("android"), Some("tweet"), _, _, _) => "tweetDetails"
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val FollowSourceFriendlyName = new Feature.Text("follow_source.friendly_name", Set(Follow).asJava)
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// Up to two sources and actions that preceded the follow (for example, a profile visit
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// through a mention click, which itself was on a tweet detail page reached through a tweet
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// click in the Home tab). See go/followsource for more details and examples.
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// The "source" here is computed using FollowSourceUtil.getSource
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val PreFollowAction1 = new Feature.Text("follow_source.pre_follow_action_1", Set(Follow).asJava)
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val PreFollowAction2 = new Feature.Text("follow_source.pre_follow_action_2", Set(Follow).asJava)
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val PreFollowSource1 = new Feature.Text("follow_source.pre_follow_source_1", Set(Follow).asJava)
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val PreFollowSource2 = new Feature.Text("follow_source.pre_follow_source_2", Set(Follow).asJava)
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}
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