search for: k_i

Dear R-list members, I've had a hard time trying to solve a non-linear system (nls) of equations which structure for the equation i, i=1,...,4, is as follows: f_i(d_1,d_2,d_3,d_4)-k_i(l,m,s) = 0 (1) In the expression above, both f_i and k_i are known functions and l, m and s are known constants. I would like to estimate the vector d=(d_1,d_2,d_3,d_4) which is solution of (1). Functions in R to estimate f_i-k_i are at the end of this message. Any help/suggestions/comments w...

...ents, also assuming this is not homework. In addition: Your use of "mid-point" is not a standard one (in my world), nor perhaps is that of "simulate". Let me attempt to re-state your problem: You wish to choose 10-tuples of integers 0 <= k <= 100 satisfying 1) 0 <= k_i <= 100 for i = 1:10; and 2) k_(i+1) - k_(i) >= 5 for i = 1:9. Finally, you'd like 1000 of those 10-tuples. [Here, "k_(i)" is the usual notation for order statistics.] Is that the task? If so, are there are other requirements on the k_i ? The word "simulate" sugg...

...In > addition: > > Your use of "mid-point" is not a standard one (in my world), nor perhaps > is that of "simulate". > > Let me attempt to re-state your problem: You wish to choose 10-tuples of > integers 0 <= k <= 100 satisfying > > 1) 0 <= k_i <= 100 for i = 1:10; > and > 2) k_(i+1) - k_(i) >= 5 for i = 1:9. > > Finally, you'd like 1000 of those 10-tuples. > [Here, "k_(i)" is the usual notation for order statistics.] > > Is that the task? > > If so, are there are other requirements on the...

...the archives but have not found anything. I need to solve a constrained optimisation problem for a nonlinear function (“maximum entropy formalism”). Specifically, Optimise: -1*SUM(p_ilog(p_i)) for a vector p_i of probabilities, conditional on a series of constraints of the form: SUM(T_i*p_i)=k_i for given values of T_i and k_i (these are constraints on expectations). Can this be done in R? Bill Shipley Associate Editor, Ecology North American Editor, Annals of Botany Département de biologie, Université de Sherbrooke, Sherbrooke (Québec) J1K 2R1 CANADA Bill.Shipley@USherbrook...

If this is a real problem and not homework, can you tell us the context? It is not at all clear (to me) what you mean by "simulate", i.e. what your target distribution is, which may depend on/be defined by the context. Bert "An educated person is one who can entertain new ideas, entertain others, and entertain herself." On Sat, May 31, 2025 at 11:52?AM Brian Smith

...;1" in the code above successively with the integers from 1 to 78, so that I get my 78 files. (equivalent to typing: k_1<-answer[class==1] write.table(k_1, "answer_1.txt") k_2<-answer[class==2] write.table(k_2, "answer_2.txt") etc.) I have tried for (i in 1:78) k_i<-answer[class==(i)] but this only generated the variable corresponding to the last value (78) of the counter i, and not the files in between. Thanks a lot for any help or pointers in the right direction. I am an R beginner and I studied the help files (they got me up to here), but I coul...

CRAN (and crantastic) updates this week New packages ------------ * disclapmix (0.1) Maintainer: Mikkel Meyer Andersen Author(s): Mikkel Meyer Andersen and Poul Svante Eriksen License: GPL-2 http://crantastic.org/packages/disclapmix disclapmix makes inference in a mixture of Discrete Laplace distributions using the EM algorithm. * EstSimPDMP (1.1) Maintainer: Unknown Author(s):