--- a
+++ b/inst/md/requirements.md
@@ -0,0 +1,61 @@
+### About requirements 
+
+Our pipeline sucefully run under the following version of the dependencies:
+
+
+talos==0.4.8
+
+seaborn==0.9.0
+
+wrangle==0.6.7
+
+scipy==1.2.0
+
+matplotlib==2.2.3
+
+numpy==1.16.4
+
+pandas==0.24.2
+
+Keras==2.2.4
+
+scikit_learn==0.21.3 
+
+Note that talos versions higher than 0.4.8 have some modifications of key functions, e.g. `fmeasure_acc` and `talos.model.layers` have been changed in the new talos version. The  `live` in callbacks does not works for newest talos version either. Please make sure you have the right versions before run the examples. 
+
+You can install these versions by typing in bash:
+
+`python3 -m pip install -r requirements.txt` 
+
+probably as sudoer. 
+
+
+### Can you use the newest talos version? 
+
+Of course, you  still could use a newest version, but to succefully run the examples, you have change some key commands, e.g.  
+
+Please replace 
+
+```python
+import talos as ta
+import wrangle as wr
+from talos.metrics.keras_metrics import fmeasure_acc
+from talos.model.layers import hidden_layers
+from talos import live
+from talos.model import lr_normalizer, early_stopper, hidden_layers
+```
+
+by 
+
+```python
+import keras
+import talos as ta
+import wrangle as wr
+from talos.utils import hidden_layers
+from talos.model import lr_normalizer, early_stopper
+```
+`f_measure_acc` is just `acc` from keras. Then, you have to replace  `f_measure_acc` by `acc` in the code since you already imported keras. Talos also have other metrics as options, please check https://github.com/autonomio/talos/blob/master/docs/Metrics.md. The hidden_layers command is now in talos.utils, whereas live is not requested. 
+
+The PDL_talos_3.6.ipynb  contains the example that run with talos==0.3.6
+
+