ex=[2779], item_availability=[], session_income=[2779, 1], itemsession_cost=[2779, 4, 1], itemsession_freq=[2779, 4, 1], itemsession_ovt=[2779, 4, 1], itemsession_ivt=[2779, 4, 1], device=cpu)
==================== training the model ====================
Epoch 500: Log-likelihood=-1980.04736328125
Epoch 1000: Log-likelihood=-1883.31298828125
Epoch 1500: Log-likelihood=-1878.42333984375
Epoch 2000: Log-likelihood=-1878.1141357421875
Epoch 2500: Log-likelihood=-1879.6005859375
Epoch 3000: Log-likelihood=-1881.