feat: Add DataTransformers and update benchmarking and tests

.gitignore

@@ -170,3 +170,4 @@ cython_debug/
 *.jpeg
 
 assets/data
+benchmark_cache/

examples/noreset_shewhart.py

@@ -13,6 +13,7 @@
 from pysatl_cpd.benchmark.metrics.online.delay_metric import MeanDelayMetric, MedianDelayMetric
 from pysatl_cpd.benchmark.noreset.noreset_benchmark_runner import NoResetBenchmarkRunner
 from pysatl_cpd.benchmark.noreset.threshold_policy import EventBasedPolicy
+from pysatl_cpd.core.algorithm_entry import AlgorithmEntry
 from pysatl_cpd.core.online.online_cpd_solver import OnlineCpdSolver
 
 # ---------------------------------------------------------------------------
@@ -169,7 +170,7 @@ def main() -> None:
     print(f"Algorithm: ShewhartControlChart(learning_period={LEARNING_PERIOD}, window={WINDOW_SIZE})")
     print(
         f"Dataset (NoReset): {N_SERIES} series, length={SERIES_LENGTH}, change_point={CHANGE_POINT},"
-        "shift={MU_AFTER - MU_BEFORE:.1f}*sigma"
+        f"shift={MU_AFTER - MU_BEFORE:.1f}*sigma"
     )
     print(f"Dataset (ARL):     {N_SERIES} series, length={SERIES_LENGTH}, no change points")
     print(f"Error margin: {ERROR_MARGIN}")
@@ -192,7 +193,7 @@ def main() -> None:
     policy = EventBasedPolicy(ERROR_MARGIN[1], strict_edge=False)
 
     runner = NoResetBenchmarkRunner(
-        algorithms=[(algorithm, THRESHOLDS)],
+        entries=[AlgorithmEntry(algorithm, THRESHOLDS)],
         providers=providers,
         metrics=metrics,
         solver=solver,
@@ -206,7 +207,7 @@ def main() -> None:
     # RUN 2: Average Run Length (ARL)
     # ==========================================
     arl_runner = ARLBenchmarkRunner(
-        algorithms=[(algorithm, THRESHOLDS)],
+        entries=[AlgorithmEntry(algorithm, THRESHOLDS)],
         providers=arl_providers,
         solver=solver,
         mode="noreset",  # uses rapid point-based extraction behind the scenes

pysatl_cpd/benchmark/arl_benchmark_runner.py

@@ -22,7 +22,7 @@
 from pysatl_cpd.benchmark.noreset.threshold_policy import PointBasedPolicy
 from pysatl_cpd.benchmark.online_benchmark_runner import OnlineBenchmarkRunner
 from pysatl_cpd.benchmark.reset_benchmark_runner import ResetBenchmarkRunner
-from pysatl_cpd.core.online.ionline_algorithm import OnlineAlgorithm
+from pysatl_cpd.core.algorithm_entry import AlgorithmEntry
 from pysatl_cpd.core.online.online_cpd_solver import OnlineCpdSolver
 from pysatl_cpd.core.online.online_detection_trace import OnlineDetectionTrace
 
@@ -44,8 +44,9 @@ class ARLBenchmarkRunner[TraceT: OnlineDetectionTrace[Any], ProviderT: LabeledDa
 
     Parameters
     ----------
-    algorithms : Sequence[tuple[OnlineAlgorithm[Any, Any, Any], Sequence[float]]]
-        Sequence of (algorithm, thresholds) pairs to evaluate.
+    entries : Sequence[AlgorithmEntry]
+        Sequence of AlgorithmEntry objects containing algorithm, thresholds,
+        and an optional data transformer.
     providers : list[ProviderT]
         Labeled data providers to run against. Must have `change_points == []`.
     solver : OnlineCpdSolver
@@ -55,6 +56,8 @@ class ARLBenchmarkRunner[TraceT: OnlineDetectionTrace[Any], ProviderT: LabeledDa
     dump_dir : Path | str | None, optional
         Directory for caching results via BenchmarkExecutor.
         If None, caching is disabled. Default is None.
+    verbose : bool, default=False
+        If True, displays progress bars during execution.
 
     Raises
     ------
@@ -66,7 +69,7 @@ class ARLBenchmarkRunner[TraceT: OnlineDetectionTrace[Any], ProviderT: LabeledDa
 
     def __init__(
         self,
-        algorithms: Sequence[tuple[OnlineAlgorithm[Any, Any, Any], Sequence[float]]],
+        entries: Sequence[AlgorithmEntry[Any, Any, Any]],
         providers: list[ProviderT],
         solver: OnlineCpdSolver,
         mode: Literal["reset", "noreset"],
@@ -83,7 +86,7 @@ def __init__(
         metrics = {"arl": ARLMetric[TraceT, ProviderT]()}
 
         super().__init__(
-            algorithms=algorithms,
+            entries=entries,
             providers=providers,
             metrics=metrics,  # type: ignore[arg-type]
             solver=solver,
@@ -95,7 +98,7 @@ def __init__(
         if mode == "reset":
             # Delegate to standard ResetBenchmarkRunner
             self._inner_runner: OnlineBenchmarkRunner[Any, ProviderT] = ResetBenchmarkRunner(
-                algorithms=algorithms,
+                entries=entries,
                 providers=providers,
                 metrics=cast(Any, metrics),
                 solver=solver,
@@ -104,7 +107,7 @@ def __init__(
         elif mode == "noreset":
             # Delegate to optimized NoResetBenchmarkRunner with PointBased policy
             self._inner_runner = NoResetBenchmarkRunner(
-                algorithms=algorithms,
+                entries=entries,
                 providers=providers,
                 metrics=cast(Any, metrics),
                 solver=solver,
@@ -116,20 +119,20 @@ def __init__(
 
     def _collect_runs(
         self,
-        algorithm: OnlineAlgorithm[Any, Any, Any],
+        entry: AlgorithmEntry[Any, Any, Any],
         threshold: float,
         providers: Sequence[ProviderT],
     ) -> list[tuple[TraceT, ProviderT]]:
         """
-        Collect runs for a given algorithm and threshold using the configured mode.
+        Collect runs for a given algorithm entry and threshold using the configured mode.
 
         Delegates the collection to either ResetBenchmarkRunner or
         NoResetBenchmarkRunner depending on the initialized mode.
 
         Parameters
         ----------
-        algorithm : OnlineAlgorithm[Any, Any, Any]
-            The algorithm to evaluate.
+        entry : AlgorithmEntry
+            The algorithm configuration entry to evaluate.
         threshold : float
             The detection threshold.
         providers : Sequence[ProviderT]
@@ -140,5 +143,5 @@ def _collect_runs(
         list[tuple[TraceT, ProviderT]]
             Batch of (trace, provider) pairs.
         """
-        runs = self._inner_runner._collect_runs(algorithm, threshold, providers)
+        runs = self._inner_runner._collect_runs(entry, threshold, providers)
         return cast(list[tuple[TraceT, ProviderT]], runs)

pysatl_cpd/benchmark/core/benchmark_executor.py

@@ -20,8 +20,8 @@
 from pathlib import Path
 from typing import Any
 
+from pysatl_cpd.core.algorithm_entry import AlgorithmEntry
 from pysatl_cpd.core.data_providers.idata_provider import DataProvider
-from pysatl_cpd.core.online.ionline_algorithm import OnlineAlgorithm
 from pysatl_cpd.core.online.online_cpd_solver import OnlineCpdSolver
 from pysatl_cpd.core.online.online_detection_trace import OnlineDetectionTrace
 
@@ -37,7 +37,7 @@ class BenchmarkRecord:
     Parameters
     ----------
     algorithm : str
-        The string identifier or name of the online algorithm.
+        The string identifier or name of the online algorithm (and transformer).
     configuration_hash : str
         A hash string representing the algorithm's configuration.
     data : str
@@ -79,9 +79,9 @@ class BenchmarkExecutor[DataT]:
 
     Parameters
     ----------
-    algorithms : Sequence[tuple[OnlineAlgorithm[Any, Any, Any], Sequence[float]]]
-        A sequence of tuples, where each tuple contains an instantiated online
-        algorithm and a sequence of thresholds to test it against.
+    entries : Sequence[AlgorithmEntry]
+        A sequence of AlgorithmEntry objects, each grouping an algorithm,
+        its thresholds, and an optional data transformer.
     providers : Sequence[DataProvider[DataT]]
         A sequence of data providers to be fed into the algorithms.
     solver : OnlineCpdSolver
@@ -94,12 +94,12 @@ class BenchmarkExecutor[DataT]:
 
     def __init__(
         self,
-        algorithms: Sequence[tuple[OnlineAlgorithm[Any, Any, Any], Sequence[float]]],
+        entries: Sequence[AlgorithmEntry[Any, Any, Any]],
         providers: Sequence[DataProvider[DataT]],
         solver: OnlineCpdSolver,
         dump_dir: str | Path | None = None,
     ) -> None:
-        self.__algorithms = algorithms
+        self.__entries = entries
         self.__providers = providers
         self.__solver = solver
         self.__dump_dir = Path(dump_dir) if dump_dir is not None else None
@@ -141,12 +141,17 @@ def execute(self) -> list[tuple[BenchmarkRecord, OnlineDetectionTrace[Any]]]:
                         )
                         registry[record.key] = record
 
-        for (algorithm, thresholds), provider in itertools.product(self.__algorithms, self.__providers):
-            algo_name = str(algorithm)
-            config_hash = hash(algorithm.configuration)
+        for entry, provider in itertools.product(self.__entries, self.__providers):
+            algo_name = entry.full_name
+            config_hash = entry.full_hash
             data_name = provider.name
 
-            for threshold in thresholds:
+            # Apply data transformer if specified in the entry
+            active_provider = provider
+            if entry.transformer is not None:
+                active_provider = entry.transformer.transform(provider)
+
+            for threshold in entry.thresholds:
                 key = (algo_name, config_hash, data_name, float(threshold))
 
                 if key in registry:
@@ -159,7 +164,7 @@ def execute(self) -> list[tuple[BenchmarkRecord, OnlineDetectionTrace[Any]]]:
                             results.append((registry[key], trace))
                             continue
 
-                steps = list(self.__solver.run(algorithm, provider, threshold))
+                steps = list(self.__solver.run(entry.algorithm, active_provider, threshold))
                 trace = OnlineDetectionTrace.from_run(steps, algo_name, config_hash)
 
                 record = BenchmarkRecord(algo_name, config_hash, data_name, threshold, None)

pysatl_cpd/benchmark/core/benchmark_logger.py

@@ -6,7 +6,7 @@
 import logging
 from typing import Any
 
-__author__ = "PySATL contributors"
+__author__ = "Danil Totmyanin"
 __copyright__ = "Copyright (c) 2026 PySATL project"
 __license__ = "SPDX-License-Identifier: MIT"
 

pysatl_cpd/benchmark/noreset/noreset_benchmark_runner.py

@@ -13,6 +13,7 @@
 __copyright__ = "Copyright (c) 2026 PySATL project"
 __license__ = "SPDX-License-Identifier: MIT"
 
+import dataclasses
 from collections.abc import Sequence
 from pathlib import Path
 from typing import Any
@@ -23,7 +24,7 @@
 from pysatl_cpd.benchmark.noreset.noreset_detection_trace import NoResetDetectionTrace
 from pysatl_cpd.benchmark.noreset.threshold_policy import ThresholdPolicy
 from pysatl_cpd.benchmark.online_benchmark_runner import OnlineBenchmarkRunner
-from pysatl_cpd.core.online.ionline_algorithm import OnlineAlgorithm
+from pysatl_cpd.core.algorithm_entry import AlgorithmEntry
 from pysatl_cpd.core.online.online_cpd_solver import OnlineCpdSolver
 from pysatl_cpd.core.online.online_detection_trace import OnlineDetectionTrace
 
@@ -32,16 +33,17 @@ class NoResetBenchmarkRunner[ProviderT: LabeledData[Any]](OnlineBenchmarkRunner[
     """
     Optimised benchmark runner for series with a single change point.
 
-    For each (algorithm, provider) pair the solver is executed exactly
+    For each (algorithm entry, provider) pair the solver is executed exactly
     once with threshold=inf, producing a full detection function trace.
     All threshold evaluations are then simulated by applying a
     ThresholdPolicy to that cached trace, avoiding redundant solver runs.
     Caching is handled entirely by BenchmarkExecutor.
 
     Parameters
     ----------
-    algorithms : Sequence[tuple[OnlineAlgorithm[Any, Any, Any], Sequence[float]]]
-        Sequence of (algorithm, thresholds) pairs to evaluate.
+    entries : Sequence[AlgorithmEntry]
+        Sequence of AlgorithmEntry objects containing algorithm, thresholds,
+        and an optional data transformer.
     providers : Sequence[ProviderT]
         Labeled data providers to run against.
     metrics : dict[str, MultipleRunMetric[NoResetDetectionTrace[Any], ProviderT, Any]]
@@ -54,11 +56,13 @@ class NoResetBenchmarkRunner[ProviderT: LabeledData[Any]](OnlineBenchmarkRunner[
     dump_dir : Path | str | None, optional
         Directory for caching inf traces via BenchmarkExecutor.
         If None, caching is disabled. Default is None.
+    verbose : bool, default=False
+        If True, displays progress bars during execution.
     """
 
     def __init__(
         self,
-        algorithms: Sequence[tuple[OnlineAlgorithm[Any, Any, Any], Sequence[float]]],
+        entries: Sequence[AlgorithmEntry[Any, Any, Any]],
         providers: Sequence[ProviderT],
         metrics: dict[str, MultipleRunMetric[NoResetDetectionTrace[Any], ProviderT, Any]],
         solver: OnlineCpdSolver,
@@ -67,7 +71,7 @@ def __init__(
         verbose: bool = False,
     ) -> None:
         super().__init__(
-            algorithms=algorithms,
+            entries=entries,
             providers=providers,
             metrics=metrics,
             solver=solver,
@@ -76,8 +80,11 @@ def __init__(
         )
         self._policy = policy
 
+        # Replace all thresholds with inf for initial pre-caching run
+        inf_entries = [dataclasses.replace(entry, thresholds=[float("inf")]) for entry in entries]
+
         executor: BenchmarkExecutor[Any] = BenchmarkExecutor(
-            algorithms=[(algorithm, [float("inf")]) for algorithm, _ in algorithms],
+            entries=inf_entries,
             providers=list(providers),
             solver=self._solver,
             dump_dir=self._dump_dir,
@@ -86,26 +93,27 @@ def __init__(
         self._inf_trace_cache: dict[tuple[str, int, str], OnlineDetectionTrace[Any]] = {}
 
         for record, trace in executor.execute():
+            # record.algorithm maps to entry.full_name, hash maps to entry.full_hash
             key = (record.algorithm, record.configuration_hash, record.data)
             self._inf_trace_cache[key] = trace
 
     def _collect_runs(
         self,
-        algorithm: OnlineAlgorithm[Any, Any, Any],
+        entry: AlgorithmEntry[Any, Any, Any],
         threshold: float,
         providers: Sequence[ProviderT],
     ) -> list[tuple[NoResetDetectionTrace[Any], ProviderT]]:
         """
-        Collect NoReset runs for a given algorithm and threshold.
+        Collect NoReset runs for a given algorithm entry and threshold.
 
         For each provider, retrieves the inf trace via BenchmarkExecutor
         and applies the ThresholdPolicy to produce a lightweight
         NoResetDetectionTrace.
 
         Parameters
         ----------
-        algorithm : OnlineAlgorithm[Any, Any, Any]
-            The algorithm to evaluate.
+        entry : AlgorithmEntry
+            The algorithm configuration entry to evaluate.
         threshold : float
             The detection threshold to simulate.
         providers : Sequence[ProviderT]
@@ -119,8 +127,8 @@ def _collect_runs(
         if not providers:
             return []
 
-        algo_name = str(algorithm)
-        config_hash = hash(algorithm.configuration)
+        algo_name = entry.full_name
+        config_hash = entry.full_hash
         runs: list[tuple[NoResetDetectionTrace[Any], ProviderT]] = []
 
         for provider in providers: