Triangular array: Difference between revisions

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Undid revision 1230460275 by Jayy V (talk) I think "triangular matrix" generally means a matrix of finite dimensions, not the infinite arrays considered here. See the hatnote. See also https://oeis.org/A007318/table which is a source of mathematics that clearly uses the "array" terminology
Applications: rm CYK algorithm example, which involves a triangular matrix, not the infinite triangles considered here
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==Applications==
Apart from the representation of [[triangular matrix|triangular matrices]], triangular arrays are used in several [[algorithm]]s. One example is the [[CYK algorithm]] for parsing [[context-free grammar]]s, an example of [[dynamic programming]].<ref>{{citation|title=Handbook of Natural Language Processing, Second Edition|editor1-first=Nitin|editor1-last=Indurkhya|editor2-first=Fred J.|editor2-last=Damerau|publisher=CRC Press|year=2010|isbn=9781420085938|page=65|url=https://books.google.com/books?id=nK-QYHZ0-_gC&pg=PA65}}.</ref>
 
[[Romberg's method]] can be used to estimate the value of a [[definite integral]] by completing the values in a triangle of numbers.<ref>{{citation|last=Thacher Jr.|first=Henry C.|title=Remark on Algorithm 60: Romberg integration|journal=Communications of the ACM|volume=7|pages =420–421|date=July 1964|doi=10.1145/364520.364542|issue=7|s2cid=29898282 |doi-access=free}}.</ref>