Table 1 Key notations and descriptions.
From: Explicit intent enhanced contrastive learning with denoising networks for sequential recommendation
Notation | Description |
|---|---|
U, I, O, C | Set of users, items, categories, implicit intents |
\(S_u\) | User u’s interaction sequence |
\(S_u^i\) | User u’s item sequence |
\(S_u^o\) | User u’s item category sequence |
t | The time step in the sequence of user sequence |
n | The number of user interaction items |
\(F^q\) | The time domain signal representation at the denoising network q-th layer |
\(X^q\) | The frequency domain signal representation at the denoising network q-th layer |
\(R^i\) | Representation of item sequences |
\(R^o\) | Representation of item category sequences |
V | Group of users with different intents from the specified user |
Q(C) | The implicit intent C distribution function |
