repl.txt (1154B)
1 2 {{alias}}( W ) 3 Returns an accumulator function which incrementally computes a moving 4 residual sum of squares (RSS). 5 6 The `W` parameter defines the number of values over which to compute the 7 moving residual sum of squares. 8 9 If provided a value, the accumulator function returns an updated moving 10 residual sum of squares. If not provided a value, the accumulator function 11 returns the current moving residual sum of squares. 12 13 As `W` values are needed to fill the window buffer, the first `W-1` returned 14 values are calculated from smaller sample sizes. Until the window is full, 15 each returned value is calculated from all provided values. 16 17 Parameters 18 ---------- 19 W: integer 20 Window size. 21 22 Returns 23 ------- 24 acc: Function 25 Accumulator function. 26 27 Examples 28 -------- 29 > var accumulator = {{alias}}( 3 ); 30 > var r = accumulator() 31 null 32 > r = accumulator( 2.0, 3.0 ) 33 1.0 34 > r = accumulator( -5.0, 2.0 ) 35 50.0 36 > r = accumulator( 3.0, 2.0 ) 37 51.0 38 > r = accumulator( 5.0, -2.0 ) 39 99.0 40 > r = accumulator() 41 99.0 42 43 See Also 44 -------- 45