The PatternAwareLetterFreqGuesser is an improvement over the naive approach, but it can still be significantly improved. For example, suppose that the first guess was [e], and that the word had no e in it. In this case, you'd get back the pattern which seems to provide no useful information. However, the fact that we don't see an e in the pattern means the word has no [e]. For the example above, that means that we know that the only possible words are [[ally, cool, good]], because the other words all have an [e] in them. If we were to count up the letters in these words, we'd get (a=1, c=1, d=1, g=-1, 1-3, 0-4, y=1}]. The final guesser you'll write is [PAGALetterFreqGuesser, where PAGA stands for "Pattern And Guesses Aware". This guesser should take into account the pattern (like your previous guesser), and should also take into account guesses which do not appear in the pattern, e.g. the fact that contains no e.

The PatternAwareLetterFreqGuesser is an improvement over the naive approach, but it can still be significantly improved. For example, suppose that the first guess was [e], and that the word had no e in it. In this case, you'd get back the pattern which seems to provide no useful information. However, the fact that we don't see an e in the pattern means the word has no [e]. For the example above, that means that we know that the only possible words are [[ally, cool, good]], because the other words all have an [e] in them. If we were to count up the letters in these words, we'd get (a=1, c=1, d=1, g=-1, 1-3, 0-4, y=1}]. The final guesser you'll write is [PAGALetterFreqGuesser, where PAGA stands for "Pattern And Guesses Aware". This guesser should take into account the pattern (like your previous guesser), and should also take into account guesses which do not appear in the pattern, e.g. the fact that contains no e.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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This still doesn't put them in random order though. Also what happens if they get it wrong?