- Label: "Label all edges heading to the right with a zero and those heading to the left with ones."
- Column: "Initialize the first column of M all zero if the first character of the text is not equal to the first character of the pattern."
- Binary: "For binary text and a binary pattern"
- Rule: "Special rules to save more time by shifting more positions: Bad character rule, Good suffix rule"
- Efficient: "Knutt-Morris-Pratt, usually less efficient, but much easier to explain and prove."
- Pattern: "
- When a substring of the pattern aligns and then there is a mismatch
- at position i, move the pattern i - sp’ i positions to the right. "
- Fuzzy: "
- Example: binary input, fuzzy or stuttering output "
- Lossless: "
- If all bits of L can be recovered from S, the compression is lossless. "
- Dictionary: "
- The dictionary is included in the beginning of the compressed
- file, unless it is implicitly constructed in a standard way "
- Code word: "
- Each word is replaced by a (shorter) code word.
- The code words usually cannot share prefixes "
- Obtain: "
- Concatenate the edge labels for the path from the root to a leaf to
- obtain the code word for the symbol at that leaf. "
- Preprocessing: "
- The use of shortcut rules generally requires preprocessing. "
- Average: "
- Average information content: "
- Logarithm: "
- The base of the logarithm is not that crucial; interpret it as units,
- base two being the bit (binary digit) "
- Root: "For any leaf i, the labels on the path from the root to that leaf concatenate to exactly the suffix S[i..m]."
- Symbol: "
- An implicit suffix tree for S is obtained from a suffix tree by
- removing the terminal symbol $ from all edge labels, removing
- any unlabelled edge, and removing subsequently all nodes that
- do not complete at least two children. "
- Equal: "
- If the two are equal for a given r and P is of length n, then there is
- a match to P starting at r in T."
- Worst case: "
- How does this differ from the worst case complexity? "
- Rate: "
- The rate of information flow; the maximum value of... "
- Compute: "To compute M( j ), we perform a binary AND on Bit-Shift( j -1) and U ( T ( j ) )."
- Correct: "
- The probability of correct transmission is denoted as p "
- Optimal: "
- Optimal input frequencies "
- Buffer: "
- Online compression = the string arrives bit by bit,
- possibly with a limited-capacity buffer "
- Apply: "
- We must apply mod p during the computations of the H values
- for this to save us anything at all. "
- Complexity: "
- Install and experimentally determine the “typical-case”
- complexity. "
domingo, 7 de abril de 2013
[IT] Card game extra points
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ResponderEliminarNP en tarea de codificación adaptativa.
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