Initial checkin of sequence_projection (#9153)

* Initial checkin of sequence_projection

* Fix the path

* Fix paths and deps

* Fix path and deps
Co-authored-by: Learn2Compress <expander-robot@google.com>

research/sequence_projection/tflite_ops/BUILD

+# TFLite ops for sequence string projection.
+load("@org_tensorflow//tensorflow/lite:build_def.bzl", "tflite_copts")
+
+licenses(["notice"])
+
+package(
+    default_visibility = [
+        "//:__subpackages__",  # sequence projection
+    ],
+)
+
+cc_library(
+    name = "sequence_string_projection",
+    srcs = ["sequence_string_projection.cc"],
+    hdrs = ["sequence_string_projection.h"],
+    copts = tflite_copts(),
+    deps = [
+        ":quantization_util",
+        "@org_tensorflow//tensorflow/lite:string_util",
+        "@org_tensorflow//tensorflow/lite/kernels:builtin_ops",
+        "///tf_ops:projection_normalizer_util",  # sequence projection
+        "///tf_ops:projection_util",  # sequence projection
+        "@flatbuffers",
+    ],
+    alwayslink = 1,
+)
+
+cc_test(
+    name = "sequence_string_projection_test",
+    size = "small",
+    srcs = ["sequence_string_projection_test.cc"],
+    deps = [
+        ":sequence_string_projection",
+        ":tf_tflite_diff_test_util",
+        "@org_tensorflow//tensorflow/lite:framework",
+        "@org_tensorflow//tensorflow/lite:string_util",
+        "@org_tensorflow//tensorflow/lite/core/api",
+        "@org_tensorflow//tensorflow/lite/kernels:builtin_ops",
+        "@org_tensorflow//tensorflow/lite/kernels:test_util",
+        "///tf_ops:sequence_string_projection_op",  # sequence projection
+        "///tf_ops:sequence_string_projection_op_v2",  # sequence projection
+        "@flatbuffers",
+    ],
+)
+
+cc_library(
+    name = "tf_tflite_diff_test_util",
+    testonly = 1,
+    srcs = ["tf_tflite_diff_test_util.cc"],
+    hdrs = ["tf_tflite_diff_test_util.h"],
+    deps = [
+        "@org_tensorflow//tensorflow/core:framework",
+        "@org_tensorflow//tensorflow/core:lib",
+        "@org_tensorflow//tensorflow/core:test",
+        "@org_tensorflow//tensorflow/core/kernels:ops_testutil",
+        "@org_tensorflow//tensorflow/lite/kernels:test_util",
+        "@com_google_absl//absl/container:flat_hash_map",
+        "@flatbuffers",
+    ],
+)
+
+cc_library(
+    name = "quantization_util",
+    hdrs = ["quantization_util.h"],
+    deps = ["@org_tensorflow//tensorflow/lite:context"],
+)
+
+cc_library(
+    name = "expected_value",
+    srcs = ["expected_value.cc"],
+    hdrs = ["expected_value.h"],
+    copts = tflite_copts(),
+    deps = [
+        ":quantization_util",
+        "@org_tensorflow//tensorflow/lite/kernels:builtin_ops",
+    ],
+    alwayslink = 1,
+)

research/sequence_projection/tflite_ops/expected_value.h

+/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
+
+Licensed 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.
+==============================================================================*/
+#ifndef TENSORFLOW_MODELS_SEQUENCE_PROJECTION_TFLITE_OPS_EXPECTED_VALUE_H_
+#define TENSORFLOW_MODELS_SEQUENCE_PROJECTION_TFLITE_OPS_EXPECTED_VALUE_H_
+
+#include "tensorflow/lite/kernels/register.h"
+
+namespace tflite {
+namespace ops {
+namespace custom {
+
+TfLiteRegistration* Register_EXPECTED_VALUE();
+
+}  // namespace custom
+}  // namespace ops
+}  // namespace tflite
+
+#endif  // TENSORFLOW_MODELS_SEQUENCE_PROJECTION_TFLITE_OPS_EXPECTED_VALUE_H_

research/sequence_projection/tflite_ops/sequence_string_projection.h

+/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
+
+Licensed 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.
+==============================================================================*/
+#ifndef TENSORFLOW_MODELS_SEQUENCE_PROJECTION_TFLITE_OPS_SEQUENCE_STRING_PROJECTION_H_
+#define TENSORFLOW_MODELS_SEQUENCE_PROJECTION_TFLITE_OPS_SEQUENCE_STRING_PROJECTION_H_
+#include "tensorflow/lite/kernels/register.h"
+
+namespace tflite {
+namespace ops {
+namespace custom {
+
+extern const char kSequenceStringProjection[];
+
+TfLiteRegistration* Register_SEQUENCE_STRING_PROJECTION();
+
+extern const char kSequenceStringProjectionV2[];
+
+TfLiteRegistration* Register_SEQUENCE_STRING_PROJECTION_V2();
+}  // namespace custom
+}  // namespace ops
+}  // namespace tflite
+
+#endif  // TENSORFLOW_MODELS_SEQUENCE_PROJECTION_TFLITE_OPS_SEQUENCE_STRING_PROJECTION_H_

research/sequence_projection/third_party/BUILD

+licenses(["notice"])

research/sequence_projection/third_party/android/BUILD

+# Placeholder to make bazel treat it as a package.

research/sequence_projection/third_party/android/android.bzl.tpl

+"""Set up configurable Android SDK and NDK dependencies."""
+
+def android_workspace():
+  # String for replacement in Bazel template.
+  # These will either be replaced by android_sdk_repository if various ENV
+  # variables are set when `local_config_android` repo_rule is run, or they
+  # will be replaced by noops otherwise.
+  MAYBE_ANDROID_SDK_REPOSITORY
+  MAYBE_ANDROID_NDK_REPOSITORY

research/sequence_projection/third_party/flatbuffers/BUILD

+# This empty BUILD file is required to make Bazel treat this directory as a package.