From 99841b9dd2e42121b159d87fe7d434b0346a0e34 Mon Sep 17 00:00:00 2001
From: HuangJiameng <105633685+HuangJiameng@users.noreply.github.com>
Date: Mon, 29 Aug 2022 15:43:55 +0800
Subject: [PATCH 1/2] add introduction to simplify demo

---
 .../Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md  | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md b/source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md
index d04eead..7703732 100644
--- a/source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md
+++ b/source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md
@@ -706,6 +706,22 @@ To verify the accuracy of the DP model, users  can calculate a simple set of pro
 
 - 05.surf: the surface formation energy.
 
+### Simplify
+When you have a dataset containing lots of repeated data, this step will help you simplify your dataset.Since `dpgen simplify` is proformed on a large dataset, only a simple demo will be provided in this part. 
+
+To learn more about simplify, you can refer to [DPGEN's Document](https://docs.deepmodeling.com/projects/dpgen/en/latest/)
+[Document of dpgen simplify parameters](https://docs.deepmodeling.com/projects/dpgen/en/latest/simplify/simplify-jdata.html)
+[Document of dpgen simplify machine parameters](https://docs.deepmodeling.com/projects/dpgen/en/latest/simplify/simplify-mdata.html)
+
+This demo can be download from dpgen/examples/simplify-MAPbI3-scan-lebesgue. You can find more example in [dpgen.examples](https://github.com/deepmodeling/dpgen/tree/master/examples)
+
+In the example, `data` contains a simplistic data set based on MAPbI3-scan case. Since it has been greatly reduced, do not take it seriously. It is just a demo. 
+`simplify_example` is the work path, which contains `INCAR` and templates for `simplify.json` and `machine.json`. You can use the command `nohup dpgen simplify simplify.json machine.json 1>log 2>err &` here to test if `dpgen simplify` can run normally. 
+
+Kindly reminder: 
+1. `machine.json` is supported by `dpdispatcher 0.4.15`, please check https://docs.deepmodeling.com/projects/dpdispatcher/en/latest/ to update the parameters according to your `dpdispatcher` version.
+2. `POTCAR` should be prepared by the user. 
+3. Please check the path and files name and make sure they are correct. 
 
 ## Summary
 Now, users have learned the basic usage of the DP-GEN.  For further information, please refer to the recommended links.

From aa0a7512af6833e8119b0b8e55886d6a2da170fc Mon Sep 17 00:00:00 2001
From: HuangJiameng <105633685+HuangJiameng@users.noreply.github.com>
Date: Mon, 29 Aug 2022 15:48:09 +0800
Subject: [PATCH 2/2] add Tranfer Learning

---
 source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md b/source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md
index 7703732..b385934 100644
--- a/source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md
+++ b/source/Tutorials/DP-GEN/learnDoc/DP-GEN_handson.md
@@ -723,6 +723,8 @@ Kindly reminder:
 2. `POTCAR` should be prepared by the user. 
 3. Please check the path and files name and make sure they are correct. 
 
+Simplify can be used in Transfer Learning, see [CaseStudies: Transfer-learning](../../../CaseStudies/Transfer-learning/index.html)
+
 ## Summary
 Now, users have learned the basic usage of the DP-GEN.  For further information, please refer to the recommended links.