Example 9.3 showed a use of error-correcting codes for a multiclass classification problem having four classes.

 Example 9.3 showed a use of error-correcting codes for a multiclass classification problem having four classes.

(a) Suppose that, given an unknown tuple to label, the seven trained binary classifiers collectively output the codeword 0101110, which does not match a codeword for any of the four classes. Using error correction, what class label should be assigned to the tuple?

(b) Explain why using a 4-bit vector for the codewords is insufficient for error

correction.