ConcatVisualBPR

class openrec.legacy.recommenders.ConcatVisualBPR(batch_size, max_user, max_item, dim_embed, dim_ve, item_f_source, item_serving_size=None, l2_reg=None, sess_config=None)

_build_default_fusions(train=True)

Build default fusion modules (may be overriden).

Parameters:train (bool) – An indicator for training or servining phase.

_build_item_extractions(train=True)

Build extraction modules for items’ data sources (should be overriden)

Parameters:train (bool) – An indicator for training or servining phase.

_build_item_inputs(train=True)

Build inputs for items’ data sources (should be overriden)

Parameters:train (bool) – An indicator for training or servining phase.

_grad_post_processing(grad_var_list)

Post-process gradients before updating variables.

Parameters:grad_var_list (list) – A list of tuples (gradients, variable). Returns:A list of updated tuples (updated gradients, variables). Return type:list

_input_mappings(batch_data, train)

Define mappings from input training batch to defined inputs.

Parameters:

• batch_data (dict) – A training batch.
• train (bool) – An indicator for training or servining phase.

Returns:

The mapping where a key corresponds to an input object, and a value corresponds to a batch_data value.

Return type:

dict