Table 3 Description of features, grouped by class, showing if they were used in the size prediction regression model, the node placement classifier, or both
From: On the challenges of predicting microscopic dynamics of online conversations
Feature | Task | Description |
|---|---|---|
Global | ||
Current size | Node | Number of nodes and its log |
Depth | Both | Conversation depth and its log |
Root edges | Size | Percentage of edges connected to the root |
Recent edges | Size | Percentage of edges connected to the most recent node (the last one) at each insertion |
Parent delay | Size | Mean and median parent delay of nodes (cf. “Structural features” section) |
Node | ||
Node index | Node | Time-ordered index of given node |
Node depth | Node | Depth of given node |
Node parent delay | Node | Parent delay of given node (cf. “Structural features” section) |
Subtree size | Node | Size of subtree of given node |
#Children | Node | Number of children of given node |
#Grandchildren | Node | Number of grandchildren of given node |
#Siblings | Node | Number of siblings of given node |
#Cousins | Node | Number of cousins of given node |
#Uncles | Node | Number of uncles of given node |
User (mean and median over conversations initiated by the user) | ||
Max breadth | Node | Maximum breadth |
Depth | Node | Conversations depth |
\(1{\text {st}}\) Breadth | Node | Number of comments at the first level (depth=1) |
Lifetime | Node | Conversation lifetime in seconds |
Size | Node | Number of nodes in a conversation tree |
Root edges | Node | Percentage of edges connecting to the root |
Recent edges | Node | Percentage of edges connecting to the most recent node (the last one) at each insertion |
#Posts | Node | Total number of posts by user |
Content | ||
Root text | Both | Title of the Reddit post or Twitter text embedded in a 25-component vector |
Temporal | ||
Response time | Size | Mean and median time between replies |
\(1{\text {st}}\) Response Time | Size | Time between root post and first reply |
Root time of day | Both | Time of day of root post |
Root day of week | Both | Day of week of root post |