Please write your answer by 3.7, 3.8, 3.9. Thank you every much.

Q3 33 Points This question relates to a hypothetical newspaper which covers a wide range of topics. The publisher plans to launch a personalised online service on a subscription basis. Readers can subscribe to a list of chosen topics, which allows them to access news articles and announcements that are related to these topics. This newspaper plans to deliver personalised news recommender app which will proactively recommend news articles and announcements that are of interest to the readers. Q3.1 4 Points Describe one explicit user information collection method which can be used to create the user profile and justify why the method is appropriate in this case. [max 80 words] Enter your answer here Save Answer Q3.2 4 Points Describe how the proposed explicit information collection method can be combined with implicit information collection, and justify why adding implicit information collection is appropriate in this case. [max 80 words] Enter your answer here Save Answer Q3.3 4 Points Implicit user profiling can pose potential privacy risks. Describe two such risks. [max 80 words] Enter your answer here Q3.4 4 Points The personalised news recommender app uses a page-based approach for adaptive content presentation which requires pre-defined content for each news item. Justify why fragment-based approaches would be more appropriate in this case. [max 80 words] Enter your answer here Save Answer Q3.5 3 Points Assuming that fragments to be three fragments that could be used. [max 60 words] Enter your answer here Save Answer Q3.6 4 Points Describe one limitation of altering fragments in the specific application context, and suggest a way to address this limitation. [max 80 words] Enter your answer here Save Answer Q3.7 4 Points To improve the user trust, the app designers decide to add transparency features. Describe two features that can be added to the app to provide transparency of the system's input. Your description should refer to the specific application context. [max 80 words] Enter your answer here Save Answer Q3.8 4 Points Describe two features that can be added to the app to provide transparency of the system's processing. Your description should refer to the specific application context. [max 80 words] Enter your answer here Save Answer Q3.9 2 Points Assume that the personalised news recommender uses collaborative filtering. A privacy-preserving technique that can be applies is perturbation. Which of the statements below defines perturbation. O users are allowed to indicate which of their ratings should be stored for personalisation O users are allowed to alter their ratings to improve personalisation O user ratings are altered by adding random numbers to the ratings before submission to a central repository to hide users' true values from the server O some user ratings are replaced by random values before submission to a central repository to hide users' true values from the server Save