Yes, the KMP algorithm involves a preprocessing step to build the partial match table, which takes O(m) time, where m is the length of the pattern string. The algorithm compares each prefix of the pattern string with its suffixes, and computes the length of the longest proper suffix that is also a prefix of each prefix. The resulting partial match table is then used in the actual string matching step, which takes O(n) time, where n is the length of the text string.

As for alternative names, the KMP algorithm is sometimes also referred to as the "Knuth-Pratt-Morris" algorithm or simply the "KMP string matching algorithm". The algorithm is widely used in computer science and is a classic example of an efficient string matching algorithm.
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