Privacy and Security in Online Social Media End Term: 22 December 2024 (September 2024 term)

1 Objective Type [1 Mark each]

1. What does confirmation bias mean?

2. The density histogram of the number of questions answered by OkCupid users follows a .................. distribution.

3. True/False: Identity resolution involves creating multiple digital profiles for a user across platforms.

4. (MCQ) Which social media platform introduced the 'Privacy Checkup' feature to educate users about privacy?

   A). Twitter

   B). Instagram

   C). Facebook

   D). Snapchat

5. (MCQ) What does 'Rate Limit' in APIs signify?

   A) The speed at which data can be downloaded

   B) The minimum accuracy guaranteed by the API

   C) The number of users who can access the API simultaneously

   D) The maximum number of requests that can be made in a specific time period

2 Short Answer Questions [2 Marks each]

1. Define the "strength of weak ties" in the context of social network analysis.

2. What is FERPA? Give an example of FERPA violation.

3. What observation was made by researchers on the nature of cramming on Mobile vs Web? What could be the reason for this difference in behavior?

4. What research questions arise when analyzing the offline impacts of online actions?

5. What is K-anonymity? Give one example and mention its limitations.

3 Short Answer Questions [3 Marks each]

1. What is Popularity Shock? How long do the effects of popularity shock last?

2. What are the biases associated with social data research, as outlined in Olteanu et al.'s study? Explain different biases at the source.

3. Explain the concepts of construct validity, internal validity, and external validity in social data research.

4. What are the three principles proposed by Russell and Burch for humane experimental techniques, and how can they be adapted for social media research?

5. Compare the performance of TF-IDF and BERT models in early prediction of contentious discussions.