[Work Log] Sampling - birth/death
September 25, 2013
Coding swap and birth/death moves.
Lots of refactoring.
- new function
attachment/detach.m; moved some code from attach to detach function. - Reworked
kernel/directory.- added function:
kernel/get_base_covariance.m. Used to implement detach. - new function:
kernel/get_model_temporal_kernel.m. Returns ind, ou, or sqexp kernel - Eliminated
kernel/*_perturb_model.m.Get_model_kernelnow constructs these directly usingget_model_temporal_kernel. - Reworked
kernel/get_model_kernel.mto use get_model_temporal_kernel.
- added function:
Birth/Death Move
Implemented birth/death move. New concept: birth and death candidate sets; on birth, candidate is moved from one to the other.
Migrating legacy sampling code
Reworking old sampler code
- "sampling context" object; (see
inference/ctx_*) - offline construction of curve-pair (see
inference/offline_*);
Refactoring Tracks (previously Corrs)
Continuing to update the codebase to use the new "Tracks" structure instead of "Corrs".
- New function
correspondence/build_empty_curveset.m. This is useful in two ways: (a) constructing an initial object before sampling begins, and (b) constructing a single track, which is now defined as a trackset of length 1.
To be continued...
- need to test
mcmc_birth_death.m.- need to construct context
ctx_init.m- need to construct offline pair candidates:
offline_pair_candidates_2
- need to construct offline pair candidates:
- need to construct context
Current task: constructing offline pair candidates. Command:
data_2 = offline_pair_candidates_2(data_, params, 0, 1, 3);