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Large-Scale Answerer in Questioner's Mind for Visual Dialog Question Generation

ICLR 2019 · Vision-language and multimodal › Visual question answering · approach: Open-domain multimodal QA

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Replace SL-Q/RL-QA question-and-guessing pipeline with AQM+ information-gain question selection and posterior guessingGuessWhich, delta setting · GuessWhichPMR: 95.45% -> 98.25%Helped
Use AQM+ with independently trained answer model (indA) instead of SL-QGuessWhich, delta setting · GuessWhichPMR: 95.45 -> 97.17Helped
Use AQM+ with answer model trained from interaction (depA) instead of RL-QAGuessWhich, delta setting · GuessWhichPMR: 95.69 -> 98.25Helped
Use AQM+ posterior guessing with SL-Q generated questionsGuessWhich, delta setting · GuessWhichPMR: 96.37Helped
Use a fixed random candidate answer set instead of generating candidate answers at each turn (ablation)AQM+ indA, GuessWhich non-delta · GuessWhichPMR: 94.64% -> 92.78%Hurt
Increase question, answer, and class candidate subset size from K=20 to K=40 (ablation)AQM+ indA, GuessWhich non-delta · GuessWhichPMR: 94.64% -> 94.79%Helped
Increase question, answer, and class candidate subset size from K=20 to K=40 (ablation)AQM+ depA, GuessWhich non-delta · GuessWhichPMR: 97.44% -> 97.77%Helped
Remove dialog history from the answer model (ablation)AQM+ indA, GuessWhich non-delta · GuessWhichPMR: 0.22%Hurt
Remove dialog history from the answer model (ablation)AQM+ depA, GuessWhich non-delta · GuessWhichPMR: 0.56%Hurt
Remove dialog history from the answer model (ablation)AQM+ indA, GuessWhich delta · GuessWhichPMR: 0.46%Hurt
Remove dialog history from the answer model (ablation)AQM+ depA, GuessWhich delta · GuessWhichPMR: 0.21%Hurt
Use AQM+ information-gain question selection with the SL-Q guesser (ablation)SL-Q guesser · GuessWhichPMRNo clear effect

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