[iotdb] 26/28: add readme

[le...@apache.org]

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leirui pushed a commit to branch research/M4-visualization
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit 600c122717017eb652a9389a1377626da8714e02
Author: Lei Rui <10...@qq.com>
AuthorDate: Fri Feb 3 22:51:05 2023 +0800

    add readme
---
 README.md | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 41b866327c..683200e96e 100644
--- a/README.md
+++ b/README.md
@@ -21,9 +21,8 @@
 
 # M4-LSM 
 - The code of two M4-LSM deployments, M4-UDF and M4-LSM, is available in this repository.
-    - M4-UDF: `org.apache.iotdb.db.query.udf.builtin.UDTFM4MAC`. The document of the M4 function is available on the product [website](https://iotdb.apache.org/UserGuide/Master/Operators-Functions/Sample.html#m4-function) of Apache IoTDB.
-    - M4-LSM: `org.apache.iotdb.db.query.dataset.groupby.LocalGroupByExecutor4CPV`
-        - Step regression index implementation: `org.apache.iotdb.tsfile.file.metadata.statistics.StepRegress`.
+    - M4-UDF: `server/src/main/java/org/apache/iotdb/db/query/udf/builtin/UDTFM4MAC.java`. The document of the M4 function is available on the product [website](https://iotdb.apache.org/UserGuide/Master/Operators-Functions/Sample.html#m4-function) of Apache IoTDB.
+    - M4-LSM: `server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/LocalGroupByExecutor4CPV.java`. The step regression index implementation: `tsfile/src/main/java/org/apache/iotdb/tsfile/file/metadata/statistics/StepRegress.java`.
     - Some integration tests for correctness are in `org.apache.iotdb.db.integration.m4.MyTest1/2/3/4`.
 - The experiment-related code, data and scripts are in [another GitHub repository](https://github.com/LeiRui/M4-visualization-exp.git) for easier reproducibility.
 - For the README of Apache IoTDB itself, please see [README_IOTDB.md](README_IOTDB.md).