add HMC for β/ζ

Author: zhizuio

NEWS.md

@@ -4,8 +4,10 @@
 
 * Update survival curve's ylab in vignette
 * Add symmetric and MALA RW-MH for the gamma-beta move
+* Implement Hamiltonian proposal for MH gamma-beta move
 * TODO: ask chatGPT to check if all specified truncation with bounds are sufficient
 * TODO: update vignette
+* TODO: copy other every small piece of theory and corresponding code for GPT to review
 
 ### GPTCM 1.1.3 (2025-11-01)
 

R/GPTCM.R

@@ -29,7 +29,7 @@
 #' @param BVS logical value for implementing Bayesian variable selection
 #' @param RW.MH string indicating the type of random-walk variance in MH 
 #' sampling for gamma-beta move, one of 
-#' \code{c("fisher", "adaptive", "symmetric")}
+#' \code{c("fisher", "hamiltonian", "symmetric")}
 #' @param sigmaMH a vector of two factors for the random-walk moving step for 
 #' gamma-beta and eta-zeta move
 #' @param threads maximum threads used for parallelization. Default is 1