def attackPerApproach(self, approach: Approach) -> Tuple[torch.Tensor]:
"""
information at the generic base class oneGNNSAttack
"""
results, _, _ = attackSet(self, approach=approach, trainset=False)
mean_results = getDefenceResultsMean(attack=self, approach=approach, attack_results=results)
return mean_results[0], mean_results[1]
def attackOneApproachAndSetAttackEpochs(self, approach, Ktest):
self.setAttackEpochs(Ktest)
results, _, _ = attackSet(self,
approach=approach,
print_answer=self.print_answer,
trainset=False)
return results[0]
def attackOneApproachAndSetAttackEpochs(self, approach: Approach, Ktest: int) -> Tuple[torch.Tensor]:
"""
sets the requested Ktest before
executing the requested attack for a specific approach on a specific gnn_type
Parameters
----------
approach: Approach - the type of attack approach
more information at classes.approach_classes.Approach
Ktest: int - number of attack epochs for the test
Returns
-------
defence: torch.Tensor - the defence %
"""
self.setAttackEpochs(Ktest)
results, _, _ = attackSet(self, approach=approach, trainset=False)
mean_results = getDefenceResultsMean(attack=self, approach=approach, attack_results=results)
return mean_results[0]
def attackPerGNN(self) -> Tuple[torch.Tensor]:
"""
executes the requested attack for the requested attribute ratios on a specific gnn_type
"""
max_attributes = self.getDataset().data.x.shape[1] * self.num_of_attackers
defence = torch.zeros(len(self.l_0_list)).to(self.device)
attributes = torch.zeros(len(self.l_0_list)).to(self.device)
self.setAttributeRatio(1.0)
results, _, _ = attackSet(self, approach=self.approaches[0], trainset=False)
results = results.type(torch.FloatTensor)
for l_0_idx, l_0 in enumerate(self.l_0_list):
self.setAttributeRatio(l_0)
attribute_mask = (results[:, 1] <= l_0 * max_attributes)
mask = torch.logical_and(attribute_mask, results[:, 0])
defence[l_0_idx] = 1 - (mask.sum().type(torch.FloatTensor) / results.shape[0])
attributes[l_0_idx] = results[mask, 1].mean(dim=0) / max_attributes
return defence.unsqueeze(0), attributes.unsqueeze(0)
def getTheMostHarmfulInput(attack, approach: Approach) -> Tuple[torch.Tensor]:
"""
attacks the model and extract the attacked feature matrix
Parameters
----------
attack: oneGNNAttack
approach: torch_geometric.data.Data
Returns
-------
attacked_nodes: torch.Tensor - the victim nodes
attacked_x: torch.Tensor - the feature matrices after the attack
y_targets: torch.Tensor - the target labels of the attack
"""
attack.print_answer = Print.NO
_, attacked_nodes, y_targets = attackSet(attack=attack,
approach=approach,
trainset=True)
attacked_x = attack.model_wrapper.model.getInput().clone().detach()
return attacked_x, attacked_nodes, y_targets
def attackPerGNNDiscrete(self) -> Tuple[torch.Tensor]:
"""
attackPerGNN for DISCRETE datasets
"""
max_attributes = self.getDataset().data.x.shape[1]
defence = torch.zeros(len(self.l_0_list)).to(self.device)
attributes = torch.zeros(len(self.l_0_list)).to(self.device)
self.setL0(1.0)
results, _, _ = attackSet(self,
approach=NodeApproach.SINGLE,
trainset=False)
results = results.type(torch.FloatTensor)
for l_0_idx, l_0 in enumerate(self.l_0_list):
self.setL0(l_0)
attribute_mask = (results[:, 1] <= l_0 * max_attributes)
mask = torch.logical_and(attribute_mask, results[:, 0])
defence[l_0_idx] = 1 - (mask.sum().type(torch.FloatTensor) /
results.shape[0])
attributes[l_0_idx] = results[mask, 1].mean(dim=0) / max_attributes
return defence.unsqueeze(0), attributes.unsqueeze(0)
def getTheMostHarmfulInput(attack, approach):
_, attacked_nodes, y_targets = attackSet(attack=attack, approach=approach, print_answer=Print.NO, trainset=True)
attacked_x = attack.model_wrapper.model.getInput().clone().detach()
return attacked_x, attacked_nodes, y_targets
def attackOneApproach(self, approach):
results, _, _ = attackSet(self,
approach=approach,
print_answer=self.print_answer,
trainset=False)
return results[0]
