Source code for torch_geometric.datasets.icews

import torch
from torch_geometric.data import InMemoryDataset, download_url, Data
from torch_geometric.io import read_txt_array


class EventDataset(InMemoryDataset):
    def __init__(self, root, transform=None, pre_transform=None,
                 pre_filter=None):
        super(EventDataset, self).__init__(root, transform, pre_transform,
                                           pre_filter)

    @property
    def num_nodes(self):
        raise NotImplementedError

    @property
    def num_rels(self):
        raise NotImplementedError

    def process_events(self):
        raise NotImplementedError

    def process(self):
        events = self.process_events()
        events = events - events.min(dim=0, keepdim=True)[0]

        data_list = []
        for (sub, rel, obj, t) in events.tolist():
            data = Data(sub=sub, rel=rel, obj=obj, t=t)
            if self.pre_filter is not None and not self.pre_filter(data):
                continue
            if self.pre_transform is not None:
                data = self.pre_transform(data)
            data_list.append(data)

        return data_list


[docs]class ICEWS18(EventDataset): r"""The Integrated Crisis Early Warning System (ICEWS) dataset used in the, *e.g.*, `"Recurrent Event Network for Reasoning over Temporal Knowledge Graphs" <https://arxiv.org/abs/1904.05530>`_ paper, consisting of events collected from 1/1/2018 to 10/31/2018 (24 hours time granularity). Args: root (string): Root directory where the dataset should be saved. split (string): If :obj:`"train"`, loads the training dataset. If :obj:`"val"`, loads the validation dataset. If :obj:`"test"`, loads the test dataset. (default: :obj:`"train"`) transform (callable, optional): A function/transform that takes in an :obj:`torch_geometric.data.Data` object and returns a transformed version. The data object will be transformed before every access. (default: :obj:`None`) pre_transform (callable, optional): A function/transform that takes in an :obj:`torch_geometric.data.Data` object and returns a transformed version. The data object will be transformed before being saved to disk. (default: :obj:`None`) pre_filter (callable, optional): A function that takes in an :obj:`torch_geometric.data.Data` object and returns a boolean value, indicating whether the data object should be included in the final dataset. (default: :obj:`None`) """ url = 'https://github.com/INK-USC/RENet/raw/master/data/ICEWS18' splits = [0, 373018, 419013, 468558] # Train/Val/Test splits. def __init__(self, root, split='train', transform=None, pre_transform=None, pre_filter=None): assert split in ['train', 'val', 'test'] super(ICEWS18, self).__init__(root, transform, pre_transform, pre_filter) idx = self.processed_file_names.index('{}.pt'.format(split)) self.data, self.slices = torch.load(self.processed_paths[idx]) @property def num_nodes(self): return 23033 @property def num_rels(self): return 256 @property def raw_file_names(self): return ['{}.txt'.format(name) for name in ['train', 'valid', 'test']] @property def processed_file_names(self): return ['train.pt', 'val.pt', 'test.pt'] def download(self): for filename in self.raw_file_names: download_url('{}/{}'.format(self.url, filename), self.raw_dir) def process_events(self): events = [] for path in self.raw_paths: data = read_txt_array(path, sep='\t', end=4, dtype=torch.long) data[:, 3] = data[:, 3] // 24 events += [data] return torch.cat(events, dim=0) def process(self): s = self.splits data_list = super(ICEWS18, self).process() torch.save(self.collate(data_list[s[0]:s[1]]), self.processed_paths[0]) torch.save(self.collate(data_list[s[1]:s[2]]), self.processed_paths[1]) torch.save(self.collate(data_list[s[2]:s[3]]), self.processed_paths[2])