diff --git a/cellx/networks/classifier.py b/cellx/networks/classifier.py
index da745d1..7079051 100644
--- a/cellx/networks/classifier.py
+++ b/cellx/networks/classifier.py
@@ -1 +1,13 @@
-# this will be the classifier
+# Building the CNN classifier:
+
+import tensorflow as tf
+from tensorflow import keras as K
+
+from ..layers import Encoder2D
+
+input = K.Input(shape=(2,))
+encoder = layers.Encoder2D()(input)
+dense = K.layers.Dense(512, activation="relu")(encoder)
+output = K.layers.Dense(4, activation=tf.nn.softmax)(dense)
+
+classifier_model = K.Model(inputs=input, outputs=output)