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graDiEnt 1.1.0

New features

• Box constraints: GetAlgoParams gains lower and upper parameters for per-parameter bounds. Enforced via bounds_type = "reflect" (default, mirrors proposals back across boundary) or "clip" (truncates to boundary).
• Warm start: optim_SQGDE gains warm_start parameter. Pass the output of a previous run to seed the population and continue optimization without re-initializing.
• Disk recovery: GetAlgoParams gains recovery_path (.rds file path) and recovery_freq (save interval in iterations). Partial results are written to disk periodically via saveRDS, surviving interrupts and OOM crashes. Load with readRDS(recovery_path).
• Progress message control: GetAlgoParams gains trace_print_freq. Set to an integer to print progress every N iterations, or Inf to suppress all iteration messages.
• Unified adaptation schemes: rand, current, and best DE schemes are now selected via adapt_scheme in GetAlgoParams rather than separate internal functions.
• crossover_rate = 0: Now accepted; selects exactly one random parameter to update per iteration.
• jitter_size = 0: Now accepted; disables jitter noise.
• Block coordinate updating: GetAlgoParams gains param_block_list, an optional list of integer vectors partitioning 1:n_params into blocks. The optimizer cycles through blocks in order across iterations, updating only the current block’s parameters instead of using random crossover selection. Useful for high-dimensional problems where updating parameter subsets per iteration is more efficient.

Bug fixes

• Fixed division-by-zero in grad_approx_fn when two particles are identical or have equal weights (zero-diff guard).
• Fixed rand scheme incorrectly sampling 2*n_diff parents instead of 2*n_diff + 1, causing out-of-bounds index access.
• Fixed runif jitter applied over n_params elements instead of length(param_indices) when crossover_rate < 1.
• Fixed GetAlgoParams validation for n_params, n_particles, and n_iter: finiteness is now checked before as.integer() coercion, preventing silent NA production and spurious “condition has length > 1” errors on vector inputs.
• Fixed early stopping crashing (and computing a wrong 'percent' metric) when thin > 1: the convergence-check window is now clamped to the iterations stored so far.

graDiEnt 1.0.1

• Package uses “message()” instead of “print()” to communicate with user.
• minor fix to documentation.

graDiEnt 1.0.0

• First public release of package.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.