Question

Kappa statistic is derived from the entire error matrix, which takes into consideration the off-diagonal elements.

(i)Write down the equation of the kappa.

(ii) Derive the relationship between the kappa, the overall accuracy and the expected accuracy.

Answer 1

used to calculate Kappaus oro follows: ☺ The equation Ko PB (e) Where roates and. Proce) is is the 71) Kappa (total) accuracy Prla) obsewed agreement along the hypothetical proobability of the nates indicating a chance agencement. in chats Kapp ai is used the streaming video Plot forow twitch. com be calculated using botla observed and the randem accuracy Kappa com be calculated as : Kappa a total accuracy ccuracy - Random accuracy | rondom accuracy. •streonth of the Kappa accuracy: kappa statistic matrix that compares an observed accuracy with an Expected Accuracy. The streangth of käppa statistic used not only to evalute a single classifier, but also to evaluate Classifiers tem themselves. amongst Note : is

Thank you so much sir