diff --git a/README.md b/README.md
index 64ff631..824a344 100644
--- a/README.md
+++ b/README.md
@@ -60,18 +60,18 @@
 | 8月30日 (周日) 10:30AM | (直播-Lecture15)   <br> 信息抽取(2)|利用深度学习解决命名实体识别,实体统一,实体消歧,关系抽取问题|[Lecture15](http://47.94.6.102/NLP7/course-info/blob/master/%E8%AF%BE%E4%BB%B6/0830%E4%BF%A1%E6%81%AF%E6%8A%BD%E5%8F%96(2).pptx)||||
 | 8月30日 (周日) 7:00PM  | (直播-Discussion)  <br> 依存文法分析(Dependency Parsing)<br> homework讲解||[课件](http://47.94.6.102/NLP7/course-info/blob/master/%E8%AF%BE%E4%BB%B6/0830%E4%BE%9D%E5%AD%98%E6%96%87%E6%B3%95%E5%88%86%E6%9E%90+%20homework%E8%AE%B2%E8%A7%A3.7z)|||
 | TBD   | (直播-Discussion)  <br> 句法分析(Parsing)和CKY算法 |||||
-| 9月6日 (周日) 10:30AM  | (直播-Lecture16)   <br> 知识图谱 |知识图的概念,搭建,应用场景||||
+|  TBD   | (直播-Lecture16)   <br> 知识图谱 |知识图的概念,搭建,应用场景||||
 | TBD  | (直播-Paper)       <br>K-BERT: Enabling Language Representation with Knowledge Graph |||[K-BERT: Enabling Language Representation with Knowledge Graph](https://arxiv.org/abs/1909.07606)|||
 | TBD   | (直播-Discussion)  <br> 知识图谱在推荐系统中的应用 |||||
 | TBD  | (直播-Discussion)  <br> 项目三讲解 |||||
-| 9月12日 (周六) 10:30AM  | (直播-Lecture17)   <br> 图神经网络 |图卷积神经网络,GraphSage, GAT||||
+| TBD | (直播-Lecture17)   <br> 图神经网络 |图卷积神经网络,GraphSage, GAT||||
 | TBD  | (直播-Discussion)  <br> 项目四讲解 |||||
 | PART 4  概率图模型|
-| 9月20日 (周日) 10:30AM  | (直播-Lecture18)   <br> 概率图模型-1 |贝叶斯推理,LDA模型||||
+|  TBD   | (直播-Lecture18)   <br> 概率图模型-1 |贝叶斯推理,LDA模型||||
 | TBD | (直播-Discussion)   <br> MCMC之Metroplis Hasting算法 |||||
 | TBD | (直播-Discussion)   <br> Bayesian Neural Network |||||
 | TBD | (直播-Paper)   <br>  |||[Dropout as a Bayesian Approximation:Representing Model Uncertainty in Deep Learning](https://arxiv.org/pdf/1506.02142.pdf)||
-| 9月26日 (周六) 10:30AM  | (直播-Lecture19)   <br> 概率图模型-2 |吉布斯采样、变分法||||
-| 9月26日 (周六) 8:00PM   | (直播-Lecture20)   <br> 概率图模型-3 |||||
+|  TBD   | (直播-Lecture19)   <br> 概率图模型-2 |吉布斯采样、变分法||||
+| TBD    | (直播-Lecture20)   <br> 概率图模型-3 |||||
 | TBD  | (直播-Discussion)  <br> 项目五讲解 |||||