e_GCBellPol | R Documentation |
The function evaluates a generalized complete Bell polynomial (output of the GCBellPol
function) when its variables and/or its coefficients are substituted with
numerical values.
e_GCBellPol(pv = c(), pn = 0, pyc = c(), pc = c(), b = FALSE)
pv |
vector of integers, the subscript of the polynomial |
pn |
integer, the number of variables |
pyc |
vector, the numerical values into the variables [optional], or the string with the direct assignment into the variables and/or the coefficients |
pc |
vector, the numerical values into the coefficients, [optional if |
b |
boolean, if |
The function GCBellPol
returns the coefficient of the multivariate exponential formal power series
exp(y[1] g1(z1,...,zm) + ... + y[n] gn(z1,...,zm))
, where y[1],...,y[n]
are variables corresponding to the
subscript pv
. The function e_GCBellPol
allows us to substitute the coefficients of
the power series g1,...,gn
and/or the variables y[1],...,y[n]
with numerical values. These
values are passed to the e_GCBellPol
function through the third and the fourth input
parameter. In the resulting expression, the y
's and the g
's are managed in lexicographic order.
There is one further input boolean parameter: when equal to TRUE
, the function prints the list of all
the assignments. See the examples for more details on the employment of this boolean parameter
when the coefficients and/or the variables of the polynomial are substituted with numerical values.
string or numerical |
the evaluation of the polynomial |
The value of the first parameter is the same as the mkmSet
function.
Called by the GCBellPol
function in the kStatistics
package.
Elvira Di Nardo elvira.dinardo@unito.it,
Giuseppe Guarino giuseppe.guarino@rete.basilicata.it
E. Di Nardo (2016) On multivariable cumulant polynomial sequence with applications. Jour. Algebraic Statistics 7(1), 72-89. (download from https://arxiv.org/abs/1606.01004)
E. Di Nardo, G. Guarino, D. Senato (2011) A new algorithm for computing the multivariate Faa di Bruno's formula. Appl. Math. Comp. 217, 6286–6295. (download from https://arxiv.org/abs/1012.6008)
E. Di Nardo, M. Marena, P. Semeraro (2020) On non-linear dependence of multivariate subordinated Levy processes. In press Stat. Prob. Letters (download from https://arxiv.org/abs/2004.03933)
mkmSet
,
MFB
,
GCBellPol
#-------------------------------------------------------------------------------# # Evaluation of the generalized complete Bell polynomial with subscript 2 #-------------------------------------------------------------------------------# # # The polynomial (y^2)g[1]^2 + (y^1)g[2], output of GCBellPol( c(2),1 ), when # g[1]=3 and g[2]=4, that is 9(y^2) + 4(y) # e_GCBellPol( c(2),1,,c(3,4) ) # # OR (same output) # e_GCBellPol( c(2),1,"g[1]=3,g[2]=4" ) # Check the assignments setting the boolean parameter equals to TRUE, that is g[1]=3 # and g[2]=4 e_GCBellPol( c(2),1,,c(3,4),TRUE ) # The numerical value of (y^2)g[1]^2 + (y^1)g[2], output of GCBellPol( c(2),1 ), when # g[1]=3 and g[2]=4 and y=7, that is 469 # e_GCBellPol( c(2),1,c(7),c(3,4) ) # # OR (same output) # e_GCBellPol( c(2),1,"y=7, g[1]=3,g[2]=4" ) # Check the assignments setting the boolean parameter equals to TRUE, that is g[1]=3 # and g[2]=4 and y=7 e_GCBellPol( c(2),1,c(7),c(3,4),TRUE ) #-------------------------------------------------------------------------------# # Evaluation of the generalized complete Bell polynomial with subscript (2,1) #-------------------------------------------------------------------------------# # # The polynomial 2(y^2)g[1,1]g[1,0] + (y^3)g[1,0]^2g[0,1] + (y)g[2,1] + (y^2) # g[2,0]g[0,1], output of GCBellPol( c(2,1),1 ), when g[0,1]=1, g[1,0]=2, g[1,1]=3, # g[2,0]=4, g[2,1]=5, that is 16(y^2) + 4(y^3) + 5(y) # e_GCBellPol(c(2,1),1,,c(1:5)) # # OR (same output) # e_GCBellPol(c(2,1),1,,c(1,2,3,4,5)) # # OR (same output) # e_GCBellPol( c(2,1),1,"g[0,1]=1, g[1,0]=2, g[1,1]=3, g[2,0]=4, g[2,1]=5" ) # Check the assignments setting the boolean parameter equals to TRUE, that is # g[0,1]=1, g[1,0]=2, g[1,1]=3, g[2,0]=4, g[2,1]=5 e_GCBellPol( c(2,1),1,,c(1:5), TRUE ) # The numerical value of 2(y^2)g[1,1]g[1,0] + (y^3)g[1,0]^2g[0,1] + (y)g[2,1] + (y^2) # g[2,0]g[0,1], output of \code{\link{GCBellPol}}( c(2,1),1 ) when g[0,1]=1, g[1,0]=2, # g[1,1]=3, g[2,0]=4, g[2,1]=5 and y=7, that is 2191 # e_GCBellPol( c(2,1),1,c(7),c(1:5) ) # # OR (same output) # e_GCBellPol( c(2,1),1,"y=7, g[0,1]=1, g[1,0]=2, g[1,1]=3, g[2,0]=4, g[2,1]=5" ) # Check the assignments setting the boolean parameter equals to TRUE, that is # g[0,1]=1, g[1,0]=2, g[1,1]=3, g[2,0]=4, g[2,1]=5, y=7 e_GCBellPol( c(2,1),1,c(7),c(1:5) ) #-----------------------------------------------------------------------------------# # Evaluation of the generalized complete Bell Polynomial with subscript (1,1) #-----------------------------------------------------------------------------------# # The polynomial (y1)g1[1,1] + (y1^2)g1[1,0]g1[0,1] + (y2)g2[1,1] + (y2^2)g2[1,0] # g2[0,1] + (y1)(y2)g1[1,0]g2[0,1] + (y1)(y2)g1[0,1]g2[1,0], output of GCBellPol(c(1,1),2) # when g1[0,1]=1, g1[1,0]=2, g1[1,1]=3, g2[0,1]=4, g2[1,0]=5, g2[1,1]=6, that is # 3(y1) + 2(y1^2) + 6(y2) + 20(y2^2) + 13(y1)(y2) # e_GCBellPol( c(1,1),2,,c(1:6)) # # OR (same output) # e_GCBellPol(c(1,1),2,,c(1,2,3,4,5,6)) # # OR (same output) # e_GCBellPol( c(1,1),2,"g1[0,1]=1, g1[1,0]=2, g1[1,1]=3, g2[0,1]=4, g2[1,0]=5, g2[1,1]=6" ) # Check the assignments setting the boolean parameter equals to TRUE, that is # g1[0,1]=1, g1[1,0]=2, g1[1,1]=3, g2[0,1]=4, g2[1,0]=5, g2[1,1]=6 e_GCBellPol( c(1,1),2,,c(1:6), TRUE ) # The numerical value of (y1)g1[1,1] + (y1^2)g1[1,0]g1[0,1] + (y2)g2[1,1] + (y2^2)g2[1,0] # g2[0,1] + (y1)(y2)g1[1,0]g2[0,1] + (y1)(y2)g1[0,1]g2[1,0], output of GCBellPol(c(1,1),2) # when g1[0,1]=1, g1[1,0]=2, g1[1,1]=3, g2[0,1]=4, g2[1,0]=5, y1=7 and y2=8, that is 2175 e_GCBellPol( c(1,1),2,c(7,8),c(1:6)) # # OR (same output) # cVal<-"y1=7, y2=8, g1[0,1]=1, g1[1,0]=2, g1[1,1]=3, g2[0,1]=4, g2[1,0]=5,g2[1,1]=6" e_GCBellPol(c(1,1),2,cVal) # To recover which coefficients and variables are involved in the generalized complete # Bell polynomial, run the e_GCBellPol function without any assignment. # The error message prints which coefficients and variables are involved, that is # Error in e_GCBellPol(c(1, 1), 2) : # The third parameter must contain the 2 values of y: y1 y2. # The fourth parameter must contain the 6 values of g: # g1[0,1] g1[1,0] g1[1,1] g2[0,1] g2[1,0] g2[1,1] # To assign correctly the values to the coefficients and the variables: # 1) run e_GCBellPol(c(1, 1), 2) and get the errors with the indication of the involved # coefficients and variables, that is # The third parameter must contain the 2 values of y: y1 y2 # The fourth parameter must contain the 6 values of g: # g1[0,1] g1[1,0] g1[1,1] g2[0,1] g2[1,0] g2[1,1] # 2) initialize g1[0,1] g1[1,0] g1[1,1] g2[0,1] g2[1,0] g2[1,1] with - for example - the # first 6 integer numbers and do the same for y1 and y2, that is # e_GCBellPol(c(1,1),2, c(1,2), c(1,2,3,4,5,6), TRUE) # 3) trought the boolean value TRUE, recover the string y1=1, y2=1, g1[0,1]=1, g1[1,0]=2, # g1[1,1]=3, g2[0,1]=4, g2[1,0]=5, g2[1,1]=6 # 4) copy and past the string in place of "..." when run # e_GCBellPol(c(1,1),2,"...") # 5) change the assignments if necessary cVal<-"y1=10,y2=11,g1[0,1]=1.1,g1[1,0]=-2,g1[1,1]=3.2,g2[0,1]=-4,g2[1,0]=10,g2[1,1]=6" e_GCBellPol(c(1,1), 2,cVal)
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