Research Article

Deep Interest-Shifting Network with Meta-Embeddings for Fresh Item Recommendation

Table 2

The statistics of the datasets.

Datasets users items interactions (M) auxiliary (M) warm-start (M) cold-start

Book-Crossing0.28 M0.27 M1.150.750.1948,434
MovieLens6,0403,7061.000.760.1930,645
Taobao-Fresh4.78 M1.61 M207.54203.134.090.31 M

The first three columns list the number of users, items, and data examples of the whole dataset. The second three columns report the number of data examples of the preprocessed datasets after splitting.