#-------------------------------------------------------------
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
#-------------------------------------------------------------

X = rbind(read($in_X1), read($in_X2));
U = read($in_U);
V = read($in_V);

UV = -(U %*% t(V));
Z1 = X * log(1 / (1 + exp(-UV)));

U = X[ , 1:ncol(U)];

UV = -(U %*% t(V));
Z2 = X * log(1 / (1 + exp(-UV)));

X = t(X);

UV = -(V %*% t(U));
Z3 = X * log(1 / (1 + exp(-UV)));

Z = as.matrix(sum(Z1) - sum(Z2) + sum(Z3));

write(Z, $out_Z);
