Issues

• Fix unresolved nested choices in Apply estimator slices

  deem-data/stratum#245 · Filter by author e-strauss opened on Oct 6, 2026

• Fix unresolved nested choices in Apply column selectors

  deem-data/stratum#244 · Filter by author e-strauss opened on Oct 6, 2026

• [Rewrite] push down projections into read_parquet

  deem-data/stratum#243 · Filter by author e-strauss opened on Oct 6, 2026
  3

• [Optimizer] Lower VotingClassifier into predictors and a voting operator

  deem-data/stratum#240 · Filter by author ArthurPendragn opened on Oct 2, 2026
  1

• Memory management

  deem-data/stratum#238 · Filter by author phaniarnab opened on Sep 30, 2026
  5

• [Optimizer] Cost-based placement of backend conversions

  deem-data/stratum#228 · Filter by author e-strauss opened on Sep 28, 2026

• [Optimizer] Conversion operator and correctness-first implementation selection

  deem-data/stratum#227 · Filter by author e-strauss opened on Sep 28, 2026

• [Optimizer] Physical operators declare their data representation and expression support

  deem-data/stratum#226 · Filter by author e-strauss opened on Sep 28, 2026

• [FrameOperator] Polars column-method evaluators diverge from pandas

  bug
  deem-data/stratum#216 · Filter by author e-strauss opened on Sep 18, 2026

• backend coherence in implementation selection

  enhancement
  deem-data/stratum#204 · Filter by author e-strauss opened on Sep 15, 2026

• [FrameOperator] Pandas/Polars selection parameter and behavior mismatches

  deem-data/stratum#201 · Filter by author Aram164 opened on Sep 9, 2026

• [Benchmark] select workloads from PDS

  deem-data/stratum#198 · Filter by author e-strauss opened on Aug 25, 2026
  1

• [BufferPool] size estimation handling of unknown object

  deem-data/stratum#197 · Filter by author e-strauss opened on Aug 20, 2026

• Make the bounded rewrite loop cheap: fuse traversals, worklist

  enhancement
  deem-data/stratum#189 · Filter by author e-strauss opened on Aug 17, 2026

• Run algebraic rewrites in a bounded loop instead of a single linear pass

  bug
  deem-data/stratum#188 · Filter by author e-strauss opened on Aug 17, 2026

• Algebraic rewrites do not reach a fixpoint

  enhancement
  deem-data/stratum#187 · Filter by author e-strauss opened on Aug 17, 2026

• Error handling

  deem-data/stratum#185 · Filter by author e-strauss opened on Aug 11, 2026

• [Rewrite] Fuse sequential maps

  deem-data/stratum#180 · Filter by author ArthurPendragn opened on Jul 31, 2026

• [ColumnExpr] missing expr for square, sqrt, sin, cos

  deem-data/stratum#163 · Filter by author e-strauss opened on Jul 27, 2026

• [Rewrite] Eliminate self subtraction

  deem-data/stratum#160 · Filter by author matit02 opened on Jul 26, 2026

• Implement a baseline greedy operator selector

  deem-data/stratum#157 · Filter by author phaniarnab opened on Jul 24, 2026

• Implement a baseline default operator selector

  deem-data/stratum#156 · Filter by author phaniarnab opened on Jul 24, 2026

• [Rewrite] eliminate identity division

  deem-data/stratum#149 · Filter by author e-strauss opened on Jul 16, 2026

• [Rewrite] Constant folding

  deem-data/stratum#136 · Filter by author matit02 opened on Jul 12, 2026

• [Rewrite] Annihilator zero exponent

  deem-data/stratum#135 · Filter by author matit02 opened on Jul 12, 2026