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Byte pair encoding is a data encoding technique. The encoding algorithm looks for pairs of characters that appear in the string more than once and replaces each instance of that pair with a corresponding character that does not appear in the string. The algorithm saves a list containing the mapping of character pairs to their corresponding replacement characters.

For example, the string "THIS_IS_THE_BEST_WISH" can be encoded as "%#_#_%E_BEST_W#H" by replacing all instances of "TH" with "%" and replacing all instances of "IS" with "#".
For which of the following strings is it NOT possible to use byte pair encoding to shorten the string’s length?
a) "BANANA"
b) "LEVEL_UP"
c) "MEET_ME_LATER"
d) "NEITHER_HERE_NOR_THERE"

User Jedyobidan
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Final answer:

Byte pair encoding (BPE) is a data encoding technique that can be used to shorten the length of strings by replacing pairs of characters. It is possible to use BPE to shorten the length of all the given strings.

Step-by-step explanation:

Byte pair encoding (BPE) is a data encoding technique used in computer science and natural language processing. It is a form of compression that replaces pairs of characters with a single character that does not appear in the string. The algorithm creates a list of character pairs and their corresponding replacement characters.Based on the given examples, BPE can be used to shorten the length of the strings 'BANANA', 'LEVEL_UP', 'MEET_ME_LATER', and 'NEITHER_HERE_NOR_THERE'. In each case, there are pairs of characters that appear more than once and can be replaced. For example, in 'BANANA', the pair 'NA' appears twice and can be replaced with a single character (e.g., '%').Therefore, it is possible to use byte pair encoding to shorten the length of all the given strings.

User Yegor Razumovsky
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