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Replaces jax.tree_util.tree_map/flatten and jax.tree_map with the idiomatic jax.tree.map/flatten introduced in JAX 0.9.x. Also removes stale reference to jaxopt in pathfinder.md comment (replaced by optax.lbfgs in BlackJAX #817). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
blackjax.pathfinder(logdensity_fn) now returns a VIAlgorithm whose init/sample interface replaces the old approximate/sample interface. Update code and prose accordingly. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
sparse_regression.md: - Replace aesara/aeppl model definition with pure JAX log-density. aesara uses np.obj2sctype removed in NumPy 2.0 and the ecosystem is no longer maintained. - Fix deprecated pandas delim_whitespace=True -> sep=r"\s+" probabilistic_ode_solver_parameter_estimation.md: - Add jax.tree_map compatibility shim; probdiffeq 0.1.x uses the top-level jax.tree_map shorthand removed in JAX 0.9.0. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The 0.1.x API (solution_routines, solvers, implementations.recipes, strategies.filters) was completely replaced in 0.2+. New API uses ivpsolve / ivpsolvers / stats / taylor modules. Key changes: - solver built via prior_wiener_integrated + correction_ts0 + strategy_smoother - solve_fixed_grid / solve_adaptive_save_at replace old solution_routines - stats.log_marginal_likelihood_terminal_values replaces condition_on_qoi_observation + marginals.logpdf - ssm built once outside JIT; init_cond rebuilt per theta - plot_solution updated for sol.u list-of-coefficients layout - vmap solution_samples iterated by index (batched IVPSolution) - Drop probdiffeq<0.2.0 pin in requirements.txt Figure outputs verified within noise of MCMC stochasticity. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com