ERMLP¶
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class
ERMLP
(triples_factory, embedding_dim=50, loss=None, preferred_device=None, random_seed=None, hidden_dim=None, regularizer=None, entity_initializer=<function uniform_>, relation_initializer=<function uniform_>)[source]¶ Bases:
pykeen.models.base.EntityRelationEmbeddingModel
An implementation of ERMLP from [dong2014].
ERMLP is a multi-layer perceptron based approach that uses a single hidden layer and represents entities and relations as vectors. In the input-layer, for each triple the embeddings of head, relation, and tail are concatenated and passed to the hidden layer. The output-layer consists of a single neuron that computes the plausibility score of the triple:
\[f(h,r,t) = \textbf{w}^{T} g(\textbf{W} [\textbf{h}; \textbf{r}; \textbf{t}]),\]where \(\textbf{W} \in \mathbb{R}^{k \times 3d}\) represents the weight matrix of the hidden layer, \(\textbf{w} \in \mathbb{R}^{k}\), the weights of the output layer, and \(g\) denotes an activation function such as the hyperbolic tangent.
Initialize the model.
Attributes Summary
The default strategy for optimizing the model’s hyper-parameters
Methods Summary
score_h
(rt_batch)Forward pass using left side (head) prediction.
score_hrt
(hrt_batch)Forward pass.
score_t
(hr_batch)Forward pass using right side (tail) prediction.
Attributes Documentation
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hpo_default
: ClassVar[Mapping[str, Any]] = {'embedding_dim': {'high': 256, 'low': 16, 'q': 16, 'type': <class 'int'>}}¶ The default strategy for optimizing the model’s hyper-parameters
Methods Documentation
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score_h
(rt_batch)[source]¶ Forward pass using left side (head) prediction.
This method calculates the score for all possible heads for each (relation, tail) pair.
- Parameters
rt_batch (
LongTensor
) – shape: (batch_size, 2), dtype: long The indices of (relation, tail) pairs.- Return type
FloatTensor
- Returns
shape: (batch_size, num_entities), dtype: float For each r-t pair, the scores for all possible heads.
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score_hrt
(hrt_batch)[source]¶ Forward pass.
This method takes head, relation and tail of each triple and calculates the corresponding score.
- Parameters
hrt_batch (
LongTensor
) – shape: (batch_size, 3), dtype: long The indices of (head, relation, tail) triples.- Raises
NotImplementedError – If the method was not implemented for this class.
- Return type
FloatTensor
- Returns
shape: (batch_size, 1), dtype: float The score for each triple.
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score_t
(hr_batch)[source]¶ Forward pass using right side (tail) prediction.
This method calculates the score for all possible tails for each (head, relation) pair.
- Parameters
hr_batch (
LongTensor
) – shape: (batch_size, 2), dtype: long The indices of (head, relation) pairs.- Return type
FloatTensor
- Returns
shape: (batch_size, num_entities), dtype: float For each h-r pair, the scores for all possible tails.
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