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  2. Summation by parts - Wikipedia

    en.wikipedia.org/wiki/Summation_by_parts

    The formula for an integration by parts is () ′ = [() ()] ′ ().. Beside the boundary conditions, we notice that the first integral contains two multiplied functions, one which is integrated in the final integral (′ becomes ) and one which is differentiated (becomes ′).

  3. Abel's summation formula - Wikipedia

    en.wikipedia.org/wiki/Abel's_summation_formula

    Fix a complex number .If = for and () =, then () = ⌊ ⌋ and the formula becomes = ⌊ ⌋ = ⌊ ⌋ + ⌊ ⌋ +. If () >, then the limit as exists and yields the ...

  4. Algorithmic Combinatorics on Partial Words - Wikipedia

    en.wikipedia.org/wiki/Algorithmic_Combinatorics...

    Two partial words are compatible when they agree on their non-wildcard characters, or equivalently when there is a string that they both match; one partial word contains another partial word if they are compatible and the non-wildcard positions of contain those of ; equivalently, the strings matched by are a subset of those matched by .

  5. Partial word - Wikipedia

    en.wikipedia.org/wiki/Partial_word

    Partial words may be generalized to parameter words, in which some of the "do not know" symbols are marked as being equal to each other. A partial word is a special case of a parameter word in which each do not know symbol may be substituted by a character independently of all of the other ones. [7]

  6. String-searching algorithm - Wikipedia

    en.wikipedia.org/wiki/String-searching_algorithm

    A simple and inefficient way to see where one string occurs inside another is to check at each index, one by one. First, we see if there is a copy of the needle starting at the first character of the haystack; if not, we look to see if there's a copy of the needle starting at the second character of the haystack, and so forth.

  7. Maximum subarray problem - Wikipedia

    en.wikipedia.org/wiki/Maximum_subarray_problem

    Maximum subarray problems arise in many fields, such as genomic sequence analysis and computer vision.. Genomic sequence analysis employs maximum subarray algorithms to identify important biological segments of protein sequences that have unusual properties, by assigning scores to points within the sequence that are positive when a motif to be recognized is present, and negative when it is not ...

  8. Latent semantic analysis - Wikipedia

    en.wikipedia.org/wiki/Latent_semantic_analysis

    Animation of the topic detection process in a document-word matrix. Every column corresponds to a document, every row to a word. A cell stores the weighting of a word in a document (e.g. by tf-idf), dark cells indicate high weights. LSA groups both documents that contain similar words, as well as words that occur in a similar set of documents.

  9. Partial permutation - Wikipedia

    en.wikipedia.org/wiki/Partial_permutation

    In this formulation, the domain U of the partial permutation consists of the positions in the string that do not contain a hole, and each such position is mapped to the number in that position. For instance, the string "1 2" would represent the partial permutation that maps 1 to itself and maps 3 to 2. [3]