why `calculate_loss` of ItemKNNCBF is return `torch.tensor(0.0)`

[zhongshsh]

https://github.com/enoche/MMRec/blob/master/src/models/itemknncbf.py#L67-L69

    def calculate_loss(self, interaction):
        tmp_v = torch.tensor(0.0)
        return tmp_v

ItemKNNCBF	Are We Really Making Much Progress? A Worrying Analysis of Recent Neural Recommendation Approaches

[enoche]

Thanks for your feedback. calculate_loss is a dummy function. ItemKNNCBF has no parameters to learn. Please check the paper.