谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》( 二 )


PSCD 和 PSID 的处理过程如 Figure 3 :

谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图
2.4 Rumor Prediction我们在 post  $c$ 的传播表示 $g$ 的基础上建立了一个谣言检测器模型:$p(c)=\sigma(\mathbf{W} \mathbf{g}+\mathbf{b})\quad\quad\quad(13)$
采用交叉熵做分类损失:$\mathcal{L}_{\text {main }}=-\sum\limits_{c \in C} y \log (p(c))\quad\quad\quad(14)$总损失:$\mathcal{L}=\mathcal{L}_{\text {main }}+\lambda \mathcal{L}_{\text {ssl }}\quad\quad\quad(15)$算法流程 如 Algorithm 1 所示:
谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图
3 Experiments and Analyses3.1 Dataset
谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图
3.2 Result
谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图

谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图

谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图
3.3 Ablation Analysis
谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图

谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图

谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图

谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图

谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》

文章插图
【谣言检测《Rumor Detection with Self-supervised Learning on Texts and Social Graph》】

推荐阅读