27 % are links that appear on different recursion levels, the |
27 % are links that appear on different recursion levels, the |
28 % crawlers visit such web-pages several times. Can this be |
28 % crawlers visit such web-pages several times. Can this be |
29 % avoided? Also, the crawlers flag as problematic any page |
29 % avoided? Also, the crawlers flag as problematic any page |
30 % that gives an error, but probably only 404 Not Found |
30 % that gives an error, but probably only 404 Not Found |
31 % errors should be flagged. Can you change that?) |
31 % errors should be flagged. Can you change that?) |
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32 |
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33 \item {\bf (Optional)} Have a look at the catastrophic backtracking |
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34 programs uploaded on KEATS. Convince yourself that they really require |
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35 a lot of computation time. If you have similar examples in your own |
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36 favourite programming language, I am happy to hear about it. |
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37 |
32 |
38 |
33 \item Read the handout of the first lecture and the handout |
39 \item Read the handout of the first lecture and the handout |
34 about notation. Make sure you understand the concepts of |
40 about notation. Make sure you understand the concepts of |
35 strings and languages. In the context of the CFL-course, |
41 strings and languages. In the context of the CFL-course, |
36 what is meant by the term \emph{language}? |
42 what is meant by the term \emph{language}? |