Displaying 2 results from an estimated 2 matches for "c_k".
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2001 Jan 02
0
mdct explanation
...-N} - w_{j+3N} x{j+3N}, otherwise
(or something similar; the cos'es should agree)
we get
b_k = \sum_{j=0}^{2N-1} a_j \cos{(2k+1)(2j+1) \over 8N} \pi
This is a DCT-IV.
For decode side, we first compute DCT-IV, and then "wrap it out"
to length 4N, with window.
We'll compute
c_k := 2 \cos{2k+1 \over 8N} \pi b_k
o
c_k = \sum_{j=0}^{2N-1} a_j (
\cos{(2k+1)(j) \over 4N} \pi + \cos{(2k+1)(j+1) \over 4N} \pi
)
c_k = \sum_{j=0}^{2N-1} a_j \cos{(2k+1)(j) \over 4N} \pi
+ \sum_{j=1}^{2N-1} a_{j-1} \cos{(2k+1)(j) \over 4N} \pi
Now set
a'_j := a_j + a_{j-1} (but...
1999 Dec 10
1
orthogonal and nested model
I'm working with a orthogonal and nested model (mixed).
I have four factors, A,B,C,D;
A and B are fixed and orthogonal
C is nested in AB interaction
and finally, D is nested in C.
I would like to model the following
Y_ijklm=Mu+A_i+B_j+AB_ij+C_k(ij)+D_l(k(ij))+Error_m(...)
I used the next command
>summary(aov(abund~A*B + C % in % A:B + D % in % C % in % A:B ,datos))
Is it the correct formula syntax?
Thaks for all.
Marcelo.
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