Do not raise an exception when projection dim in the Cross layer is too large.

Work around pypa/pip#9835.

PiperOrigin-RevId: 370560208

Author: maciejkula

tensorflow_recommenders/layers/feature_interaction/dcn.py

@@ -122,12 +122,6 @@ def build(self, input_shape):
           use_bias=self._use_bias,
       )
     else:
-      if self._projection_dim < 0 or self._projection_dim > last_dim / 2:
-        raise ValueError(
-            "`projection_dim` should be smaller than last_dim / 2 to improve "
-            "the model efficiency, and should be positive. Got "
-            "`projection_dim` {}, and last dimension of input {}".format(
-                self._projection_dim, last_dim))
       self._dense_u = tf.keras.layers.Dense(
           self._projection_dim,
           kernel_initializer=self._kernel_initializer,

tensorflow_recommenders/layers/feature_interaction/dcn_test.py

@@ -49,14 +49,6 @@ def test_one_input(self):
     self.evaluate(tf.compat.v1.global_variables_initializer())
     self.assertAllClose(np.asarray([[0.16, 0.32, 0.48]]), output)
 
-  def test_invalid_proj_dim(self):
-    with self.assertRaisesRegexp(ValueError,
-                                 r"should be smaller than last_dim / 2"):
-      x0 = np.random.random((12, 5))
-      x = np.random.random((12, 5))
-      layer = Cross(projection_dim=6)
-      layer(x0, x)
-
   def test_unsupported_input_dim(self):
     with self.assertRaisesRegexp(ValueError,
                                  r"dimension mismatch"):

tools/build_scripts/utils.sh

@@ -10,9 +10,14 @@ function create_virtualenv() {
   mkdir -p ~/virtualenv
   pushd ~/virtualenv
   rm -rf $env_name
-  virtualenv -p $env_python $env_name
+  virtualenv --no-pip -p $env_python $env_name
   source $env_name/bin/activate
-  pip install --upgrade pip
+  # Keep using an old version of pip to work around
+  # https://github.com/pypa/pip/blob/6d636902d7712f77abdb4428c290ba9bdbe70d9c/news/9831.bugfix.rst
+  python -m ensurepip
+  python -m pip install -U pip==21.0.1
+  pip install "pip==21.0.1"
+  pip --version
   popd
 }