error with crf layer

[yassmine-lam]

hi,

I got this error when trying to use the crf layer from keras_contrib

AttributeError: module 'tensorflow.keras.backend' has no attribute 'slice'

Could someone help plz

thank u

[IS5882]

Hi Yassmine, I was able to solve it, by using an older version of tensor flow and keras try that

!pip uninstall tensorflow -y
!pip install tensorflow==2.2.0

!pip install git+https://www.github.com/keras-team/keras-contrib.git
from keras_contrib.layers import CRF

from subprocess import check_output

from subprocess import check_output

but you will still get errors, open the file in lib (that has the errors) and add those
import tensorflow.compat.v1 as tf

tf.disable_v2_behavior()

tf.compat.v1.train.Optimizer
I think its called tensorflow.py