The response rate of the user (between 0 and 1).
Considers text-conversations which began with an incoming text. The response rate is the fraction of such conversations in which the user sent a text (a response).
The following sequence of messages defines four conversations (
I for an
O for an outgoing text):
I-O-I-O => Started with an incoming text and at least one outgoing text I-I-O-I => Started with an incoming text and at least one outgoing text I-I-I-I => Started with an incoming text but doesn't have outgoing texts O-O-I-O => Not starting with an incoming text
Here, the ratio would be 2/3 as we have 3 conversations starting with an incoming text and 2 of them have at least one outgoing text.
See Using bandicoot for a definition of conversations.