Source code for immuneML.data_model.dataset.SequenceDataset

import copy
import logging
import math
import pickle
from pathlib import Path
from typing import List

import pandas as pd

from immuneML.data_model.dataset.ElementDataset import ElementDataset
from immuneML.data_model.receptor.receptor_sequence.ReceptorSequence import ReceptorSequence

[docs]class SequenceDataset(ElementDataset): """A dataset class for sequence datasets (single chain). All the functionality is implemented in ElementDataset class, except creating a new dataset and obtaining metadata."""
[docs] @classmethod def build_from_objects(cls, sequences: List[ReceptorSequence], file_size: int, path: Path, name: str = None): file_count = math.ceil(len(sequences) / file_size) file_names = [path / f"batch{''.join(['0' for i in range(1, len(str(file_count)) - len(str(index)) + 1)])}{index}.pickle" for index in range(1, file_count+1)] for index in range(file_count): with file_names[index].open("wb") as file: pickle.dump(sequences[index*file_size:(index+1)*file_size], file) return SequenceDataset(filenames=file_names, file_size=file_size, name=name)
[docs] def get_metadata(self, field_names: list, return_df: bool = False): """Returns a dict or an equivalent pandas DataFrame with metadata information under 'custom_params' attribute in SequenceMetadata object for every sequence for provided field names""" result = {field: [] for field in field_names} for sequence in self.get_data(): for field in field_names: result[field].append(sequence.metadata.get_attribute(field)) for field in field_names: if all(item is None for item in result[field]): logging.warning(f"{SequenceDataset.__name__}: none of the sequences in the dataset {} have metadata field '{field}'. " f"Returning 'None' instead...") result[field] = None return pd.DataFrame(result) if return_df else result
[docs] def clone(self): return SequenceDataset(self.labels, copy.deepcopy(self.encoded_data), copy.deepcopy(self._filenames), file_size=self.file_size,