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from __future__ import annotations |
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from dataclasses import dataclass |
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from pathlib import Path |
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import json |
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import shutil |
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import datasets as hfd |
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import h5py |
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import pgzip as gzip |
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import pyarrow as pa |
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@dataclass |
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class CaseSizes: |
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n_bus: int |
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n_load: int |
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n_gen: int |
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n_branch: int |
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CASENAME = "2869_pegase" |
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SIZES = CaseSizes(n_bus=2869, n_load=1491, n_gen=510, n_branch=4582) |
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NUM_TRAIN = 188545 |
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NUM_TEST = 47137 |
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NUM_INFEASIBLE = 14322 |
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SPLITFILES = { |
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"train/SOCOPF/dual.h5.gz": ["train/SOCOPF/dual/xaa", "train/SOCOPF/dual/xab", "train/SOCOPF/dual/xac"], |
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} |
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URL = "https://huggingface.co/datasets/PGLearn/PGLearn-Medium-2869_pegase" |
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DESCRIPTION = """\ |
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The 2869_pegase PGLearn optimal power flow dataset, part of the PGLearn-Medium collection. \ |
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""" |
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VERSION = hfd.Version("1.0.0") |
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DEFAULT_CONFIG_DESCRIPTION="""\ |
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This configuration contains feasible input, primal solution, and dual solution data \ |
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for the ACOPF, DCOPF, and SOCOPF formulations on the {case} system. For case data, \ |
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download the case.json.gz file from the `script` branch of the repository. \ |
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https://huggingface.co/datasets/PGLearn/PGLearn-Medium-2869_pegase/blob/script/case.json.gz |
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""" |
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USE_ML4OPF_WARNING = """ |
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================================================================================================ |
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Loading PGLearn-Medium-2869_pegase through the `datasets.load_dataset` function may be slow. |
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Consider using ML4OPF to directly convert to `torch.Tensor`; for more info see: |
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https://github.com/AI4OPT/ML4OPF?tab=readme-ov-file#manually-loading-data |
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Or, use `huggingface_hub.snapshot_download` and an HDF5 reader; for more info see: |
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https://huggingface.co/datasets/PGLearn/PGLearn-Medium-2869_pegase#downloading-individual-files |
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================================================================================================ |
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""" |
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CITATION = """\ |
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@article{klamkinpglearn, |
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title={{PGLearn - An Open-Source Learning Toolkit for Optimal Power Flow}}, |
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author={Klamkin, Michael and Tanneau, Mathieu and Van Hentenryck, Pascal}, |
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year={2025}, |
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}\ |
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""" |
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IS_COMPRESSED = True |
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def acopf_features(sizes: CaseSizes, primal: bool, dual: bool, meta: bool): |
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features = {} |
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if primal: features.update(acopf_primal_features(sizes)) |
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if dual: features.update(acopf_dual_features(sizes)) |
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if meta: features.update({f"ACOPF/{k}": v for k, v in META_FEATURES.items()}) |
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return features |
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def dcopf_features(sizes: CaseSizes, primal: bool, dual: bool, meta: bool): |
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features = {} |
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if primal: features.update(dcopf_primal_features(sizes)) |
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if dual: features.update(dcopf_dual_features(sizes)) |
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if meta: features.update({f"DCOPF/{k}": v for k, v in META_FEATURES.items()}) |
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return features |
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def socopf_features(sizes: CaseSizes, primal: bool, dual: bool, meta: bool): |
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features = {} |
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if primal: features.update(socopf_primal_features(sizes)) |
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if dual: features.update(socopf_dual_features(sizes)) |
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if meta: features.update({f"SOCOPF/{k}": v for k, v in META_FEATURES.items()}) |
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return features |
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FORMULATIONS_TO_FEATURES = { |
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"ACOPF": acopf_features, |
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"DCOPF": dcopf_features, |
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"SOCOPF": socopf_features, |
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} |
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class PGLearnMedium2869_pegaseConfig(hfd.BuilderConfig): |
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"""BuilderConfig for PGLearn-Medium-2869_pegase. |
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By default, primal solution data, metadata, input, casejson, are included for the train and test splits. |
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To modify the default configuration, pass attributes of this class to `datasets.load_dataset`: |
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Attributes: |
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formulations (list[str]): The formulation(s) to include, e.g. ["ACOPF", "DCOPF"] |
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primal (bool, optional): Include primal solution data. Defaults to True. |
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dual (bool, optional): Include dual solution data. Defaults to False. |
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meta (bool, optional): Include metadata. Defaults to True. |
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input (bool, optional): Include input data. Defaults to True. |
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casejson (bool, optional): Include case.json data. Defaults to True. |
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train (bool, optional): Include training samples. Defaults to True. |
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test (bool, optional): Include testing samples. Defaults to True. |
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infeasible (bool, optional): Include infeasible samples. Defaults to False. |
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""" |
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def __init__(self, |
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formulations: list[str], |
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primal: bool=True, dual: bool=False, meta: bool=True, input: bool = True, casejson: bool=True, |
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train: bool=True, test: bool=True, infeasible: bool=False, |
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compressed: bool=IS_COMPRESSED, **kwargs |
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): |
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super(PGLearnMedium2869_pegaseConfig, self).__init__(version=VERSION, **kwargs) |
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self.case = CASENAME |
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self.formulations = formulations |
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self.primal = primal |
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self.dual = dual |
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self.meta = meta |
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self.input = input |
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self.casejson = casejson |
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self.train = train |
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self.test = test |
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self.infeasible = infeasible |
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self.gz_ext = ".gz" if compressed else "" |
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@property |
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def size(self): |
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return SIZES |
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@property |
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def features(self): |
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features = {} |
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if self.casejson: features.update(case_features()) |
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if self.input: features.update(input_features(SIZES)) |
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for formulation in self.formulations: |
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features.update(FORMULATIONS_TO_FEATURES[formulation](SIZES, self.primal, self.dual, self.meta)) |
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return hfd.Features(features) |
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@property |
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def splits(self): |
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splits: dict[hfd.Split, dict[str, str | int]] = {} |
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if self.train: |
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splits[hfd.Split.TRAIN] = { |
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"name": "train", |
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"num_examples": NUM_TRAIN |
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} |
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if self.test: |
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splits[hfd.Split.TEST] = { |
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"name": "test", |
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"num_examples": NUM_TEST |
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} |
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if self.infeasible: |
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splits[hfd.Split("infeasible")] = { |
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"name": "infeasible", |
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"num_examples": NUM_INFEASIBLE |
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} |
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return splits |
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@property |
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def urls(self): |
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urls: dict[str, None | str | list] = { |
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"case": None, "train": [], "test": [], "infeasible": [], |
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} |
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if self.casejson: |
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urls["case"] = f"case.json" + self.gz_ext |
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else: |
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urls.pop("case") |
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split_names = [] |
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if self.train: split_names.append("train") |
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if self.test: split_names.append("test") |
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if self.infeasible: split_names.append("infeasible") |
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for split in split_names: |
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if self.input: urls[split].append(f"{split}/input.h5" + self.gz_ext) |
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for formulation in self.formulations: |
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if self.primal: |
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filename = f"{split}/{formulation}/primal.h5" + self.gz_ext |
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if filename in SPLITFILES: urls[split].append(SPLITFILES[filename]) |
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else: urls[split].append(filename) |
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if self.dual: |
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filename = f"{split}/{formulation}/dual.h5" + self.gz_ext |
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if filename in SPLITFILES: urls[split].append(SPLITFILES[filename]) |
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else: urls[split].append(filename) |
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if self.meta: |
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filename = f"{split}/{formulation}/meta.h5" + self.gz_ext |
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if filename in SPLITFILES: urls[split].append(SPLITFILES[filename]) |
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else: urls[split].append(filename) |
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return urls |
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class PGLearnMedium2869_pegase(hfd.ArrowBasedBuilder): |
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"""DatasetBuilder for PGLearn-Medium-2869_pegase. |
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The main interface is `datasets.load_dataset` with `trust_remote_code=True`, e.g. |
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```python |
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from datasets import load_dataset |
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ds = load_dataset("PGLearn/PGLearn-Medium-2869_pegase", trust_remote_code=True, |
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# modify the default configuration by passing kwargs |
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formulations=["DCOPF"], |
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dual=False, |
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meta=False, |
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) |
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``` |
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""" |
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DEFAULT_WRITER_BATCH_SIZE = 10000 |
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BUILDER_CONFIG_CLASS = PGLearnMedium2869_pegaseConfig |
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DEFAULT_CONFIG_NAME=CASENAME |
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BUILDER_CONFIGS = [ |
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PGLearnMedium2869_pegaseConfig( |
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name=CASENAME, description=DEFAULT_CONFIG_DESCRIPTION.format(case=CASENAME), |
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formulations=list(FORMULATIONS_TO_FEATURES.keys()), |
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primal=True, dual=True, meta=True, input=True, casejson=False, |
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train=True, test=True, infeasible=False, |
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) |
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] |
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def _info(self): |
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return hfd.DatasetInfo( |
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features=self.config.features, splits=self.config.splits, |
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description=DESCRIPTION + self.config.description, |
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homepage=URL, citation=CITATION, |
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) |
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def _split_generators(self, dl_manager: hfd.DownloadManager): |
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hfd.logging.get_logger().warning(USE_ML4OPF_WARNING) |
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filepaths = dl_manager.download_and_extract(self.config.urls) |
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splits: list[hfd.SplitGenerator] = [] |
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if self.config.train: |
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splits.append(hfd.SplitGenerator( |
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name=hfd.Split.TRAIN, |
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gen_kwargs=dict(case_file=filepaths.get("case", None), data_files=tuple(filepaths["train"]), n_samples=NUM_TRAIN), |
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)) |
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if self.config.test: |
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splits.append(hfd.SplitGenerator( |
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name=hfd.Split.TEST, |
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gen_kwargs=dict(case_file=filepaths.get("case", None), data_files=tuple(filepaths["test"]), n_samples=NUM_TEST), |
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)) |
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if self.config.infeasible: |
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splits.append(hfd.SplitGenerator( |
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name=hfd.Split("infeasible"), |
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gen_kwargs=dict(case_file=filepaths.get("case", None), data_files=tuple(filepaths["infeasible"]), n_samples=NUM_INFEASIBLE), |
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)) |
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return splits |
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def _generate_tables(self, case_file: str | None, data_files: tuple[hfd.utils.track.tracked_str | list[hfd.utils.track.tracked_str]], n_samples: int): |
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case_data: str | None = json.dumps(json.load(open_maybe_gzip_cat(case_file))) if case_file is not None else None |
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data: dict[str, h5py.File] = {} |
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for file in data_files: |
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v = h5py.File(open_maybe_gzip_cat(file), "r") |
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if isinstance(file, list): |
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k = "/".join(Path(file[0].get_origin()).parts[-3:-1]).split(".")[0] |
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else: |
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k = "/".join(Path(file.get_origin()).parts[-2:]).split(".")[0] |
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data[k] = v |
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for k in list(data.keys()): |
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if "/input" in k: data[k.split("/", 1)[1]] = data.pop(k) |
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batch_size = self._writer_batch_size or self.DEFAULT_WRITER_BATCH_SIZE |
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for i in range(0, n_samples, batch_size): |
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effective_batch_size = min(batch_size, n_samples - i) |
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sample_data = { |
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f"{dk}/{k}": |
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hfd.features.features.numpy_to_pyarrow_listarray(v[i:i + effective_batch_size, ...]) |
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for dk, d in data.items() for k, v in d.items() if f"{dk}/{k}" in self.config.features |
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} |
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if case_data is not None: |
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sample_data["case/json"] = pa.array([case_data] * effective_batch_size) |
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yield i, pa.Table.from_pydict(sample_data) |
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for f in data.values(): |
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f.close() |
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FLOAT_TYPE = "float32" |
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INT_TYPE = "int64" |
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BOOL_TYPE = "bool" |
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STRING_TYPE = "string" |
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def case_features(): |
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return { |
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"case/json": hfd.Value(STRING_TYPE), |
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} |
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META_FEATURES = { |
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"meta/seed": hfd.Value(dtype=INT_TYPE), |
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"meta/formulation": hfd.Value(dtype=STRING_TYPE), |
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"meta/primal_objective_value": hfd.Value(dtype=FLOAT_TYPE), |
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"meta/dual_objective_value": hfd.Value(dtype=FLOAT_TYPE), |
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"meta/primal_status": hfd.Value(dtype=STRING_TYPE), |
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"meta/dual_status": hfd.Value(dtype=STRING_TYPE), |
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"meta/termination_status": hfd.Value(dtype=STRING_TYPE), |
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"meta/build_time": hfd.Value(dtype=FLOAT_TYPE), |
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"meta/extract_time": hfd.Value(dtype=FLOAT_TYPE), |
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"meta/solve_time": hfd.Value(dtype=FLOAT_TYPE), |
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} |
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def input_features(sizes: CaseSizes): |
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return { |
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"input/pd": hfd.Sequence(length=sizes.n_load, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"input/qd": hfd.Sequence(length=sizes.n_load, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"input/gen_status": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=BOOL_TYPE)), |
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"input/branch_status": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=BOOL_TYPE)), |
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"input/seed": hfd.Value(dtype=INT_TYPE), |
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} |
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def acopf_primal_features(sizes: CaseSizes): |
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return { |
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"ACOPF/primal/vm": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/primal/va": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/primal/pg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/primal/qg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/primal/pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/primal/pt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/primal/qf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/primal/qt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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} |
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def acopf_dual_features(sizes: CaseSizes): |
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return { |
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"ACOPF/dual/kcl_p": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/kcl_q": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/vm": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/pg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/qg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/ohm_pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/ohm_pt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/ohm_qf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/ohm_qt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/pt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/qf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/qt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/va_diff": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/sm_fr": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/sm_to": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"ACOPF/dual/slack_bus": hfd.Value(dtype=FLOAT_TYPE), |
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} |
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def dcopf_primal_features(sizes: CaseSizes): |
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return { |
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"DCOPF/primal/va": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"DCOPF/primal/pg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"DCOPF/primal/pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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} |
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def dcopf_dual_features(sizes: CaseSizes): |
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return { |
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"DCOPF/dual/kcl_p": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"DCOPF/dual/pg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"DCOPF/dual/ohm_pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"DCOPF/dual/pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"DCOPF/dual/va_diff": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
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"DCOPF/dual/slack_bus": hfd.Value(dtype=FLOAT_TYPE), |
|
|
} |
|
|
def socopf_primal_features(sizes: CaseSizes): |
|
|
return { |
|
|
"SOCOPF/primal/w": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/primal/pg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/primal/qg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/primal/pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/primal/pt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/primal/qf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/primal/qt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/primal/wr": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/primal/wi": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
} |
|
|
def socopf_dual_features(sizes: CaseSizes): |
|
|
return { |
|
|
"SOCOPF/dual/kcl_p": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/kcl_q": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/w": hfd.Sequence(length=sizes.n_bus, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/pg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/qg": hfd.Sequence(length=sizes.n_gen, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/ohm_pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/ohm_pt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/ohm_qf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/ohm_qt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/jabr": hfd.Array2D(shape=(sizes.n_branch, 4), dtype=FLOAT_TYPE), |
|
|
"SOCOPF/dual/sm_fr": hfd.Array2D(shape=(sizes.n_branch, 3), dtype=FLOAT_TYPE), |
|
|
"SOCOPF/dual/sm_to": hfd.Array2D(shape=(sizes.n_branch, 3), dtype=FLOAT_TYPE), |
|
|
"SOCOPF/dual/va_diff": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/wr": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/wi": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/pf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/pt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/qf": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
"SOCOPF/dual/qt": hfd.Sequence(length=sizes.n_branch, feature=hfd.Value(dtype=FLOAT_TYPE)), |
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
def open_maybe_gzip_cat(path: str | list): |
|
|
if isinstance(path, list): |
|
|
dest = Path(path[0]).parent.with_suffix(".h5") |
|
|
if not dest.exists(): |
|
|
with open(dest, "wb") as dest_f: |
|
|
for piece in path: |
|
|
with open(piece, "rb") as piece_f: |
|
|
shutil.copyfileobj(piece_f, dest_f) |
|
|
shutil.rmtree(Path(piece).parent) |
|
|
path = dest.as_posix() |
|
|
return gzip.open(path, "rb") if path.endswith(".gz") else open(path, "rb") |
|
|
|
