update README

Author: orion-orion

README.md

@@ -35,10 +35,14 @@
 - 矩阵计算
     - Matrix Decomposition
 - 数值优化
+  - 同步算法 
     - Synchronous Stochastic Gradient Descent (SSGD) [[explanation]](https://www.cnblogs.com/orion-orion/p/16413182.html) [[paper]](https://proceedings.neurips.cc/paper/2010/file/abea47ba24142ed16b7d8fbf2c740e0d-Paper.pdf)
       -  SSGD in Pytorch [[explanation]](https://www.cnblogs.com/orion-orion/p/16413182.html) [[paper]](https://proceedings.neurips.cc/paper/2010/file/abea47ba24142ed16b7d8fbf2c740e0d-Paper.pdf)
     - Model Average (MA) [[explanation]](https://www.cnblogs.com/orion-orion/p/16426982.html) [[paper]](https://aclanthology.org/N10-1069.pdf)
     - Block-wise Model Update Filtering (BMUF) [[explanation]](https://www.cnblogs.com/orion-orion/p/16426982.html) [[paper]](https://www.microsoft.com/en-us/research/wp-content/uploads/2016/08/0005880.pdf)
     - Elastic Averaging Stochastic Gradient Descent  (EASGD) [[explanation]](https://www.cnblogs.com/orion-orion/p/16426982.html) [[paper]](https://proceedings.neurips.cc/paper/2015/file/d18f655c3fce66ca401d5f38b48c89af-Paper.pdf)
+  - 异步算法
+    - Synchronous Stochastic Gradient Descent (ASGD)[[explanation]](https://www.cnblogs.com/orion-orion/p/17118029.html) [[paper]](https://proceedings.neurips.cc/paper/2011/file/f0e52b27a7a5d6a1a87373dffa53dbe5-Paper.pdf)
+    - Hogwild! [[explanation]](https://www.cnblogs.com/orion-orion/p/17118029.html) [[paper]](https://proceedings.neurips.cc/paper/2011/file/218a0aefd1d1a4be65601cc6ddc1520e-Paper.pdf)
 - 随机算法
     - Monte Carlo Method