What's Changed

Features

• feat: Switch to scalar code for unimplemented interactions in las simd code path. by @zwd-ms in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4487
• feat: support tags for options by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4507
• feat: [gd] persist ppw extra state by @lalo in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4023
• feat: [LAS] add example ft hash and cache and re-use rows of matrix if actions do not change by @olgavrou in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4509
• feat: [LAS] with CCB by @olgavrou in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4520

Fixes

• fix: move explore_eval above epsilon_decay by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4501
• fix: [epsilon_decay] output prob ACTION_PROBS, skip: 449 by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4502
• fix: skip compat tests by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4503
• fix: Fix model merging not reweighting input by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4508
• fix: [epsdecay] return champ prediction always by @lalo in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4518
• fix: cbzo ppw fix by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4519
• fix: multi-model state for cb_adf by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4513
• fix: [automl] avoid ccb pulling in generate_interactions by @lalo in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4524

Other Changes

• refactor: split out 400+ valgrind tests by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4482
• build: Don't add SSE flags when cross compiling to MacOS universal2 binary by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4489
• refactor: Migrate raw function pointers to std::function by @byronxu99 in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4461
• refactor: [all] remove cost_sensitive from workspace by @lalo in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4490
• refactor: [sd] move prog val config to sd by @lalo in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4491
• chore: update submodules by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4492
• ci: [epsilon_decay] benchmarks by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4494
• refactor: register additional metrics at start not at finish by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4499
• chore: force eigen submodule path to output a message if submodule mi… by @olgavrou in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4504
• refactor: allow any pointer in object_pool by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4473
• chore: [LAS] don't force mtr with LAS by @olgavrou in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4516
• test: fix pytype issue in test runner and utl by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4517
• refactor: make flat_example an implementation detail of ksvm by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4505
• refactor: automatically set label parser after stack created by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4471
• refactor: add api to set data object associated with learner by @jackgerrits in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4523
• refactor: dedup dict const by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4525
• refactor: rename wpp, ppw, ws, params_per_problem, problem_multiplier, num_learners, increment -> feature_width by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4521
• refactor: remove resize in gd setup by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4526
• chore: Update Version to 9.8.0 by @bassmang in https://github.com/VowpalWabbit/vowpal_wabbit/pull/4529

Full Changelog: https://github.com/VowpalWabbit/vowpal_wabbit/compare/9.7.0...9.8.0