MalNetTiny dataset

torch_geometric/datasets/__init__.py

@@ -64,6 +64,7 @@
 from .twitch import Twitch
 from .airports import Airports
 from .ba_shapes import BAShapes
+from .malnet_tiny import MalNetTiny
 
 __all__ = [
     'KarateClub',
@@ -134,6 +135,7 @@
     'Twitch',
     'Airports',
     'BAShapes',
+    'MalNetTiny',
 ]
 
 classes = __all__

torch_geometric/datasets/hgb_dataset.py

@@ -49,8 +49,7 @@ class HGBDataset(InMemoryDataset):
 
     def __init__(self, root: str, name: str,
                  transform: Optional[Callable] = None,
-                 pre_transform: Optional[Callable] = None,
-                 pre_filter: Optional[Callable] = None):
+                 pre_transform: Optional[Callable] = None):
         self.name = name.lower()
         assert self.name in set(self.names.keys())
         super().__init__(root, transform, pre_transform)
@@ -114,7 +113,7 @@ def process(self):
                 src, dst = n_types[int(src)], n_types[int(dst)]
                 rel = rel.split('-')[1]
                 e_types[key] = (src, rel, dst)
-        else:
+        else:  # Link prediction:
             raise NotImplementedError
 
         # Extract node information:
@@ -180,9 +179,12 @@ def process(self):
                 n_id, n_type = mapping_dict[int(y[0])], n_types[int(y[2])]
                 data[n_type].test_mask[n_id] = True
 
-        else:
+        else:  # Link prediction:
             raise NotImplementedError
 
+        if self.pre_transform is not None:
+            data = self.pre_transform(data)
+
         torch.save(self.collate([data]), self.processed_paths[0])
 
     def __repr__(self) -> str:

torch_geometric/datasets/malnet_tiny.py

@@ -0,0 +1,79 @@
+from typing import Optional, Callable, List
+
+import os
+import glob
+import os.path as osp
+
+import torch
+from torch_geometric.data import (InMemoryDataset, Data, download_url,
+                                  extract_tar)
+
+
+class MalNetTiny(InMemoryDataset):
+    r"""The MalNet Tiny dataset from the
+    `"A Large-Scale Database for Graph Representation Learning"
+    <https://openreview.net/pdf?id=1xDTDk3XPW>`_ paper.
+    :class:`MalNetTiny` contains 5,000 malicious and benign software function
+    call graphs across 5 different types.
+
+    Args:
+        root (string): Root directory where the dataset should be saved.
+        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 = 'http://malnet.cc.gatech.edu/graph-data/malnet-graphs-tiny.tar.gz'
+
+    def __init__(self, root: str, transform: Optional[Callable] = None,
+                 pre_transform: Optional[Callable] = None,
+                 pre_filter: Optional[Callable] = None):
+        super().__init__(root, transform, pre_transform, pre_filter)
+        self.data, self.slices = torch.load(self.processed_paths[0])
+
+    @property
+    def raw_file_names(self) -> List[str]:
+        folders = ['addisplay', 'adware', 'benign', 'downloader', 'trojan']
+        return [osp.join('malnet-graphs-tiny', folder) for folder in folders]
+
+    @property
+    def processed_file_names(self) -> str:
+        return 'data.pt'
+
+    def download(self):
+        path = download_url(self.url, self.raw_dir)
+        extract_tar(path, self.raw_dir)
+        os.unlink(path)
+
+    def process(self):
+        data_list = []
+
+        for y, raw_path in enumerate(self.raw_paths):
+            raw_path = osp.join(raw_path, os.listdir(raw_path)[0])
+            filenames = glob.glob(osp.join(raw_path, '*.edgelist'))
+
+            for filename in filenames:
+                with open(filename, 'r') as f:
+                    edges = f.read().split('\n')[5:-1]
+                edge_index = [[int(edge[0]), int(edge[-1])] for edge in edges]
+                edge_index = torch.tensor(edge_index).t().contiguous()
+                num_nodes = int(edge_index.max()) + 1
+                data = Data(edge_index=edge_index, y=y, num_nodes=num_nodes)
+                data_list.append(data)
+
+        if self.pre_filter is not None:
+            data_list = [data for data in data_list if self.pre_filter(data)]
+
+        if self.pre_transform is not None:
+            data_list = [self.pre_transform(data) for data in data_list]
+
+        torch.save(self.collate(data_list), self.processed_paths[0])