What is the doc_key genre?

[josecoves]

doc_key indicates the genre, which can be one of the following: "bc", "bn", "mz", "nw", "pt", "tc", "wb"

I am not sure what the different options mean and which I should use.

[drakesong]

• bc: broadcast conversations
• bn: broadcast news
• mz: magazines
• nw: news wire
• pt: pivot corpus
• tc: telephone conversation
• wb: weblogs

I got these from this document on page 5 Table 1.