root/doc/html/formula.repository @ 346

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1\form#0:$x$
2\form#1:$\omega$
3\form#2:\[ y_t = \theta_1 \psi_1 + \theta_2 + \psi_2 +\ldots + \theta_n \psi_n + r e_t \]
4\form#3:$[\theta r]$
5\form#4:$\psi=\psi(y_{1:t},u_{1:t})$
6\form#5:$u_t$
7\form#6:$e_t$
8\form#7:\[ e_t \sim \mathcal{N}(0,1). \]
9\form#8:$ y_t $
10\form#9:$\theta,r$
11\form#10:$ dt = [y_t psi_t] $
12\form#11:\[ x_t = A x_{t-1} + B u_t + Q^{1/2} e_t \]
13\form#12:\[ y_t = C x_{t-1} + C u_t + Q^{1/2} w_t. \]
14\form#13:\[ \left[\begin{array}{cc} R^{0.5}\\ P_{t|t-1}^{0.5}C' & P_{t|t-1}^{0.5}CA'\\ & Q^{0.5}\end{array}\right]<\mathrm{orth.oper.}>=\left[\begin{array}{cc} R_{y}^{0.5} & KA'\\ & P_{t+1|t}^{0.5}\\ \\\end{array}\right]\]
15\form#14:\[ f(y_t|\psi_t, \Theta) = \sum_{i=1}^{n} w_i f(y_t|\psi_t, \theta_i) \]
16\form#15:$\psi$
17\form#16:$w=[w_1,\ldots,w_n]$
18\form#17:$\theta_i$
19\form#18:$\Theta$
20\form#19:$\Theta = [\theta_1,\ldots,\theta_n,w]$
21\form#20:$A=Ch' Ch$
22\form#21:$Ch$
23\form#22:\[M = L'DL\]
24\form#23:$L$
25\form#24:$D$
26\form#25:$V = V + w v v'$
27\form#26:$C$
28\form#27:$V = C*V*C'$
29\form#28:$V = C'*V*C$
30\form#29:$V$
31\form#30:$x= v'*V*v$
32\form#31:$x= v'*inv(V)*v$
33\form#32:$U$
34\form#33:$A'D0 A$
35\form#34:$L'DL$
36\form#35:$A'*diag(D)*A = self.L'*diag(self.D)*self.L$
37\form#36:\[ f(rv|rvc) = \frac{f(rv,rvc)}{f(rvc)} \]
38\form#37:$ f(rvc) = \int f(rv,rvc) d\ rv $
39\form#38:\[ f(x) = \sum_{i=1}^{n} w_{i} f_i(x), \quad \sum_{i=1}^n w_i = 1. \]
40\form#39:$f_i(x)$
41\form#40:$f(x)$
42\form#41:\[ f(\theta_t | d_1,\ldots,d_t) = \frac{f(y_t|\theta_t,\cdot) f(\theta_t|d_1,\ldots,d_{t-1})}{f(y_t|d_1,\ldots,d_{t-1})} \]
43\form#42:$y_t$
44\form#43:$ c_t $
45\form#44:\[ f(\theta_t | c_t, d_1,\ldots,d_t) \propto f(y_t,\theta_t|c_t,\cdot, d_1,\ldots,d_{t-1}) \]
46\form#45:$x=$
47\form#46:$ x $
48\form#47:$ f_x()$
49\form#48:$ [x_1 , x_2 , \ldots \ $
50\form#49:$ f_x(rv)$
51\form#50:$x \sim epdf(rv|cond)$
52\form#51:$ t $
53\form#52:$ t+1 $
54\form#53:$ f(d_{t+1} |d_{t}, \ldots d_{0}) $
55\form#54:$t$
56\form#55:$[y_{t} y_{t-1} ...]$
57\form#56:$[y_t, u_t, y_{t-1 }, u_{t-1}, \ldots]$
58\form#57:$ f(x_t|x_{t-1}) $
59\form#58:$ f(d_t|x_t) $
60\form#59:$p$
61\form#60:$p\times$
62\form#61:$n$
63\form#62:\[ f(x|\beta) = \frac{\Gamma[\gamma]}{\prod_{i=1}^{n}\Gamma(\beta_i)} \prod_{i=1}^{n}x_i^{\beta_i-1} \]
64\form#63:$\gamma=\sum_i \beta_i$
65\form#64:\[ f(x|\alpha,\beta) = \prod f(x_i|\alpha_i,\beta_i) \]
66\form#65:$\beta$
67\form#66:\[ x\sim iG(a,b) => 1/x\sim G(a,1/b) \]
68\form#67:$mu=A*rvc+mu_0$
69\form#68:$\mu$
70\form#69:$k$
71\form#70:$\alpha=k$
72\form#71:$\beta=k/\mu$
73\form#72:$\mu/\sqrt(k)$
74\form#73:$ \mu $
75\form#74:$ k $
76\form#75:$ \alpha=\mu/k^2+2 $
77\form#76:$ \beta=\mu(\alpha-1)$
78\form#77:$ \mu/\sqrt(k)$
79\form#78:$l$
80\form#79:\[ \mu = \mu_{t-1} ^{l} p^{1-l}\]
81\form#80:$\mathcal{I}$
82\form#81:$\alpha$
83\form#82:$ \Psi $
84\form#83:$ \nu $
85\form#84:$ \nu-p-1 $
86\form#85:$w$
87\form#86:$x^{(i)}, i=1..n$
88\form#87:$f(x) = a$
89\form#88:$f(x) = Ax+B$
90\form#89:$f(x,u)$
91\form#90:$f(x,u) = Ax+Bu$
92\form#91:$f(x0,u0)$
93\form#92:$A=\frac{d}{dx}f(x,u)|_{x0,u0}$
94\form#93:$u$
95\form#94:$A=\frac{d}{du}f(x,u)|_{x0,u0}$
96\form#95:$ f(D) $
97\form#96:\[ f(a,b,c) = f(a|b,c) f(b) f(c) \]
98\form#97:$ f(a|b,c) $
99\form#98:$ f(b) $
100\form#99:$ f(c) $
101\form#100:\begin{eqnarray} x_t &= &A x_{t-1} + B u_{t} + v_t,\\ y_t &= &C x_{t} + D u_{t} + w_t, \end{eqnarray}
102\form#101:$ x_t $
103\form#102:$ A, B, C, D$
104\form#103:$v_t, w_t$
105\form#104:$Q, R$
106\form#105:\begin{eqnarray} x_t &= &g( x_{t-1}, u_{t}) + v_t,\\ y_t &= &h( x_{t} , u_{t}) + w_t, \end{eqnarray}
107\form#106:$ g(), h() $
108\form#107:\[ y_t = \theta' \psi_t + \rho e_t \]
109\form#108:$[\theta,\rho]$
110\form#109:$\psi_t$
111\form#110:$\mathcal{N}(0,1)$
112\form#111:\[ V_t = \sum_{i=0}^{n} \left[\begin{array}{c}y_{t}\\ \psi_{t}\end{array}\right] \begin{array}{c} [y_{t}',\,\psi_{t}']\\ \\\end{array} \]
113\form#112:\[ \nu_t = \sum_{i=0}^{n} 1 \]
114\form#113:$ \theta_t , r_t $
115\form#114:\[ V_t = \phi V_{t-1} + \left[\begin{array}{c}y_{t}\\ \psi_{t}\end{array}\right] \begin{array}{c} [y_{t}',\,\psi_{t}']\\ \\\end{array} +(1-\phi) V_0 \]
116\form#115:\[ \nu_t = \phi \nu_{t-1} + 1 + (1-\phi) \nu_0 \]
117\form#116:$ \phi $
118\form#117:$ \phi \in [0,1]$
119\form#118:\[ \mathrm{win_length} = \frac{1}{1-\phi}\]
120\form#119:$ \phi=0.9 $
121\form#120:$ V_0 , \nu_0 $
122\form#121:$ V_t , \nu_t $
123\form#122:$ \phi<1 $
124\form#123:$ [d_1, d_2, \ldots d_t] $
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