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E.24 Information Exchange

Candice (Yuluan) Cao edited this page Jan 25, 2023 · 4 revisions

1. Feature Name

E.24 Information Exchange

2. Literature Source (Serial Number, link)

E.24

3. Description of how the feature is computed (In Layman’s terms)

Word count minus first-person singular pronouns was taken as a measure of information exchange. Then converted to z-scores.

  • Word count minus first-person singular pronouns --> "info_exchange_wordcount"
  • Compute the z-score at the chat level: compute z-score for each message across all conversations --> "zscore_chats"
  • Compute the z-score at the conversation level: group by batch and round, then compute the z-score for each conversation --> "zscore_conversation"

4. Discussions of the rationales for this computational method

According to E.24, "The degree of information exchange is reflected in group communication in part by the quantity of on-task communication." (p.3) To calculate on-task communication, "Word count is a commonly used crude measure of the total information exchanged. First-person singular pronouns suggest self-focus rather than topic focus, thus we refined the crude measure by penalizing for self-focus rather than topic focus."

Note that in our particular case, our dataset is jury data. Each participant expressed their own opinions in the discussion in order to reach a unanimous decision. Personal opinion acts as an important part in on-task communications, so we might put a question mark on the rationale of penalizing self-focus messages.

Besides, this method does not capture the quality of the information itself because it solely relies on the quantity. A person might say a lot of words but none of the information is meaningful to the topic.

Overall, this is not a very informative computational method to measure the degree of information exchange.

5. Algorithms used (KNN, Logistic Regression etc.)

stats.zscore

6. ML Inputs/Features

NA

7. Statistical concepts used

z-score

8. Pages of the literature to be referred to for details

Page 4 in E.24

9. Any tweaks/changes/adaptions made from the original source

NA

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