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He, Feng, Longxuan Chen, and Brian M. Lucey. "Chinese corporate biodiversity exposure." Finance Research Letters 70 (2024): 106275. should be cited when these metrics are used.
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Biodiversity Risk_ARThe variable is assigned a value of 1 if the frequency of the keywords within the company exceeds two occurrences within a one-year period; otherwise, it is assigned a value of 0.
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Biodiversity Concern_freq_ARThe proportion of the word frequency of biodiversity keywords in the annual report’s total word frequency. (The total word frequency is measured by using the precise mode of jieba for recognition, excluding stopwords, single-character words, and words containing English.)
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Biodiversity Concern_cnwords_ARThe proportion of the number of Chinese words related to biodiversity in the annual report to the total number of Chinese words (excluding punctuation marks and numbers).
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Biodiversity Concern_char_ARThe proportion of the number of characters related to biodiversity in the annual report to the total number of characters in the report (including punctuation marks and numbers).
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BCF, BCW and BCC are these x 1e6, for ease of interpretation
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