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Alice and Bob are independently annotating movie reviews into POS (for positive) and NEG (for negative) sentiment. They compared their results and have the following
Alice and Bob are independently annotating movie reviews into POS (for positive) and NEG (for negative) sentiment. They compared their results and have the following finding: Number of reviews that both Alice and Bob labeled POS: 40 Number of reviews that Alice labeled POS but Bob labeled NEG: 10 Number of reviews that Alice labeled NEG but Bob labeled POS: 20 Number of reviews both Alice and Bob labeled NEG: 30 They then computed the Cohen's Kappa value to measure their Inter-annotator agreement. What is their Kappa agreement rate
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