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  2. Join-pattern - Wikipedia

    en.wikipedia.org/wiki/Join-pattern

    So in the join-calculus, the basic values are the names like on the example is A,B or C. So the two compiler representing this values with two ways. Join compiler use a vector with Two slots, the first to the name it-self and the second to a queue of pending messages. Jocaml use name like a pointer on definitions.

  3. Join count statistic - Wikipedia

    en.wikipedia.org/wiki/Join_count_statistic

    Join count statistics are a method of spatial analysis used to assess the degree of association, in particular the autocorrelation, of categorical variables distributed over a spatial map. They were originally introduced by Australian statistician P. A. P. Moran . [ 1 ]

  4. Pointer (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Pointer_(computer_programming)

    In particular, the C definition explicitly declares that the syntax a[n], which is the n-th element of the array a, is equivalent to *(a + n), which is the content of the element pointed by a + n. This implies that n[a] is equivalent to a[n] , and one can write, e.g., a[3] or 3[a] equally well to access the fourth element of an array a .

  5. Join and meet - Wikipedia

    en.wikipedia.org/wiki/Join_and_meet

    In general, the join and meet of a subset of a partially ordered set need not exist. Join and meet are dual to one another with respect to order inversion. A partially ordered set in which all pairs have a join is a join-semilattice. Dually, a partially ordered set in which all pairs have a meet is a meet-semilattice.

  6. Nested loop join - Wikipedia

    en.wikipedia.org/wiki/Nested_loop_join

    algorithm nested_loop_join is for each tuple r in R do for each tuple s in S do if r and s satisfy the join condition then yield tuple <r,s> This algorithm will involve n r *b s + b r block transfers and n r +b r seeks, where b r and b s are number of blocks in relations R and S respectively, and n r is the number of tuples in relation R.

  7. Block nested loop - Wikipedia

    en.wikipedia.org/wiki/Block_nested_loop

    A block-nested loop (BNL) is an algorithm used to join two relations in a relational database. [1]This algorithm [2] is a variation of the simple nested loop join and joins two relations and (the "outer" and "inner" join operands, respectively).

  8. Degrees of freedom (statistics) - Wikipedia

    en.wikipedia.org/wiki/Degrees_of_freedom...

    This can be represented as an n-dimensional random vector: (). Since this random vector can lie anywhere in n-dimensional space, it has n degrees of freedom. Now, let ¯ be the sample mean. The random vector can be decomposed as the sum of the sample mean plus a vector of residuals:

  9. Row and column spaces - Wikipedia

    en.wikipedia.org/wiki/Row_and_column_spaces

    The dimension of the column space is called the rank of the matrix and is at most min(m, n). [1] A definition for matrices over a ring is also possible. The row space is defined similarly. The row space and the column space of a matrix A are sometimes denoted as C(A T) and C(A) respectively. [2] This article considers matrices of real numbers