diff --git a/readme.md b/readme.md
index 0746f27..992c70f 100644
--- a/readme.md
+++ b/readme.md
@@ -12,3 +12,16 @@ The code has been tested running under python 3.10.13, with the following packag
 
 Please run the 'example.py'.
 
+## Recommended parameters setting range
+
+Please refer to the relevant descriptions provided in the manuscript for a comprehensive understanding of the total parameters. Below are the suggested ranges of values for the user-defined parameters:
+
+| parameter                                                    | range of values   |
+| ------------------------------------------------------------ | ----------------- |
+| changing Intensity for $\phi$: $\mathcal{I}_{\phi}$          | $[0,1]$           |
+| the number of randomly selected points in $D_2$: $\|\varLambda\|$ | $[[0.1T],T]$      |
+| offset of the noise in $D_5$                                 | $[0.1,0.5]$       |
+| change rate in F2: $r_c$                                     | $[0.1,1]$         |
+| recurrent period: $P$                                        | $[[0.1T],[0.5T]]$ |
+
+Where $T$ denotes the maximum change time. 
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index f06d2ba..0000000
Binary files a/requirements.txt and /dev/null differ