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Questions and Answers
What metrics were used to evaluate the model?
What metrics were used to evaluate the model?
accuracy, positive predictive value, and percent return
Define positive predictive value (PPV).
Define positive predictive value (PPV).
PPV is the proportion of true positives to total predicted positives, representing how many of the investments a hypothetical investor will make a profit on.
Why is PPV important in evaluating the model?
Why is PPV important in evaluating the model?
PPV represents how many of the investments a hypothetical investor will make a profit on.
What was the range of periods in which the PPV and accuracy were the highest?
What was the range of periods in which the PPV and accuracy were the highest?
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Why were the accuracy and PPV lower in shorter time period tests?
Why were the accuracy and PPV lower in shorter time period tests?
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What is the average yearly return in the S&P 500 from 2008-2020?
What is the average yearly return in the S&P 500 from 2008-2020?
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Which tests perform the best in the secondary tests?
Which tests perform the best in the secondary tests?
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What period of news data and stock holding is likely to produce good returns in a variety of markets?
What period of news data and stock holding is likely to produce good returns in a variety of markets?
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What type of investors will benefit from using a period of news data of around 20-25 weeks and holding that stock for a short amount of time?
What type of investors will benefit from using a period of news data of around 20-25 weeks and holding that stock for a short amount of time?
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What does the methodology presented in the paper and the specific tests done show?
What does the methodology presented in the paper and the specific tests done show?
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