diff --git a/speechx/speechx/base/basic_types.h b/speechx/speechx/base/basic_types.h
index 206b7be67548b4d84655df882d4392367832f40a..3a648649f5f8873dc8944a4d10776f616a8d4a0b 100644
--- a/speechx/speechx/base/basic_types.h
+++ b/speechx/speechx/base/basic_types.h
@@ -14,10 +14,10 @@
 
 #pragma once
 
-#include "kaldi/base/kaldi-types.h"
-
 #include <limits>
 
+#include "kaldi/base/kaldi-types.h"
+
 typedef float BaseFloat;
 typedef double double64;
 
diff --git a/speechx/speechx/base/common.h b/speechx/speechx/base/common.h
index b470b9de5e9219276a9f2bba33769fbb472c7b87..97bff96620e45eaf5b3e591b65ec31007e0dbce8 100644
--- a/speechx/speechx/base/common.h
+++ b/speechx/speechx/base/common.h
@@ -47,6 +47,5 @@
 #include "base/flags.h"
 #include "base/log.h"
 #include "base/macros.h"
-
 #include "utils/file_utils.h"
 #include "utils/math.h"
\ No newline at end of file
diff --git a/speechx/speechx/decoder/ctc_prefix_beam_search_decoder.h b/speechx/speechx/decoder/ctc_prefix_beam_search_decoder.h
index 2c28bee1b663999204b69133fb3247e3a32d57d1..eef8823da4aa2522cdf36521b3deb134a1e9c7f5 100644
--- a/speechx/speechx/decoder/ctc_prefix_beam_search_decoder.h
+++ b/speechx/speechx/decoder/ctc_prefix_beam_search_decoder.h
@@ -17,7 +17,6 @@
 #include "decoder/ctc_beam_search_opt.h"
 #include "decoder/ctc_prefix_beam_search_score.h"
 #include "decoder/decoder_itf.h"
-
 #include "fst/symbol-table.h"
 
 namespace ppspeech {
diff --git a/speechx/speechx/decoder/ctc_tlg_decoder.h b/speechx/speechx/decoder/ctc_tlg_decoder.h
index 76bbcf42d2c7f67b929d2a37cf16b42221af83a4..cf8a9b7303a48b276f5f6eef5ea1a0d2a970eecf 100644
--- a/speechx/speechx/decoder/ctc_tlg_decoder.h
+++ b/speechx/speechx/decoder/ctc_tlg_decoder.h
@@ -16,7 +16,6 @@
 
 #include "base/common.h"
 #include "decoder/decoder_itf.h"
-
 #include "kaldi/decoder/lattice-faster-online-decoder.h"
 #include "util/parse-options.h"
 
@@ -35,7 +34,7 @@ struct TLGDecoderOptions {
     std::string word_symbol_table{};
     std::string fst_path{};
 
-    static TLGDecoderOptions InitFromFlags(){
+    static TLGDecoderOptions InitFromFlags() {
         TLGDecoderOptions decoder_opts;
         decoder_opts.word_symbol_table = FLAGS_word_symbol_table;
         decoder_opts.fst_path = FLAGS_graph_path;
@@ -45,9 +44,11 @@ struct TLGDecoderOptions {
         decoder_opts.opts.max_active = FLAGS_max_active;
         decoder_opts.opts.beam = FLAGS_beam;
         decoder_opts.opts.lattice_beam = FLAGS_lattice_beam;
-        LOG(INFO) << "LatticeFasterDecoder max active: " <<  decoder_opts.opts.max_active ;
-        LOG(INFO) << "LatticeFasterDecoder beam: " <<  decoder_opts.opts.beam ;
-        LOG(INFO) << "LatticeFasterDecoder lattice_beam: " <<  decoder_opts.opts.lattice_beam ;
+        LOG(INFO) << "LatticeFasterDecoder max active: "
+                  << decoder_opts.opts.max_active;
+        LOG(INFO) << "LatticeFasterDecoder beam: " << decoder_opts.opts.beam;
+        LOG(INFO) << "LatticeFasterDecoder lattice_beam: "
+                  << decoder_opts.opts.lattice_beam;
 
         return decoder_opts;
     }
diff --git a/speechx/speechx/decoder/param.h b/speechx/speechx/decoder/param.h
index 5e1120ad8feab482035d5d7d8e581b42bf993c48..1f13bbc0e468c97e7206006a9087a93dfa4e6600 100644
--- a/speechx/speechx/decoder/param.h
+++ b/speechx/speechx/decoder/param.h
@@ -30,7 +30,7 @@ DEFINE_int32(receptive_field_length,
              7,
              "receptive field of two CNN(kernel=3) downsampling module.");
 DEFINE_int32(subsampling_rate,
-             4, 
+             4,
              "two CNN(kernel=3) module downsampling rate.");
 DEFINE_int32(nnet_decoder_chunk, 1, "paddle nnet forward chunk");
 
@@ -62,7 +62,6 @@ DEFINE_double(beam, 15.0, "decoder beam");
 DEFINE_double(lattice_beam, 7.5, "decoder beam");
 
 
-
 // DecodeOptions flags
 // DEFINE_int32(chunk_size, -1, "decoding chunk size");
 DEFINE_int32(num_left_chunks, -1, "left chunks in decoding");
diff --git a/speechx/speechx/decoder/recognizer.h b/speechx/speechx/decoder/recognizer.h
index 51b6667393aaebf7846a542c4f8102af00f4c73b..0402bcd3ccd5582b4b248c44a309c978046fad16 100644
--- a/speechx/speechx/decoder/recognizer.h
+++ b/speechx/speechx/decoder/recognizer.h
@@ -32,15 +32,15 @@ struct RecognizerResource {
     ModelOptions model_opts{};
     TLGDecoderOptions tlg_opts{};
     //    CTCBeamSearchOptions beam_search_opts;
- 
-    static RecognizerResource InitFromFlags(){
+
+    static RecognizerResource InitFromFlags() {
         RecognizerResource resource;
         resource.acoustic_scale = FLAGS_acoustic_scale;
-        resource.feature_pipeline_opts = FeaturePipelineOptions::InitFromFlags();
+        resource.feature_pipeline_opts =
+            FeaturePipelineOptions::InitFromFlags();
         resource.model_opts = ModelOptions::InitFromFlags();
-        resource.tlg_opts =  TLGDecoderOptions::InitFromFlags();
-      return resource;
-
+        resource.tlg_opts = TLGDecoderOptions::InitFromFlags();
+        return resource;
     }
 };
 
diff --git a/speechx/speechx/decoder/u2_recognizer.h b/speechx/speechx/decoder/u2_recognizer.h
index 86bd482164dbeebe85c9842c6ee332a5250547de..f4e91b18f966e7ad7dc69507d1868cac230335ff 100644
--- a/speechx/speechx/decoder/u2_recognizer.h
+++ b/speechx/speechx/decoder/u2_recognizer.h
@@ -21,10 +21,9 @@
 #include "decoder/ctc_prefix_beam_search_decoder.h"
 #include "decoder/decoder_itf.h"
 #include "frontend/audio/feature_pipeline.h"
-#include "nnet/decodable.h"
-
 #include "fst/fstlib.h"
 #include "fst/symbol-table.h"
+#include "nnet/decodable.h"
 
 DECLARE_int32(nnet_decoder_chunk);
 DECLARE_int32(num_left_chunks);
@@ -63,9 +62,9 @@ struct DecodeOptions {
     // CtcEndpointConfig ctc_endpoint_opts;
     CTCBeamSearchOptions ctc_prefix_search_opts{};
 
-    static DecodeOptions InitFromFlags(){
+    static DecodeOptions InitFromFlags() {
         DecodeOptions decoder_opts;
-        decoder_opts.chunk_size=FLAGS_nnet_decoder_chunk;
+        decoder_opts.chunk_size = FLAGS_nnet_decoder_chunk;
         decoder_opts.num_left_chunks = FLAGS_num_left_chunks;
         decoder_opts.ctc_weight = FLAGS_ctc_weight;
         decoder_opts.rescoring_weight = FLAGS_rescoring_weight;
@@ -86,15 +85,16 @@ struct U2RecognizerResource {
     DecodeOptions decoder_opts{};
 
     static U2RecognizerResource InitFromFlags() {
-    U2RecognizerResource resource;
-    resource.vocab_path = FLAGS_vocab_path;
-    resource.acoustic_scale = FLAGS_acoustic_scale;
-
-    resource.feature_pipeline_opts = ppspeech::FeaturePipelineOptions::InitFromFlags();
-    resource.model_opts = ppspeech::ModelOptions::InitFromFlags();
-    resource.decoder_opts = ppspeech::DecodeOptions::InitFromFlags();
-    return resource;
-}
+        U2RecognizerResource resource;
+        resource.vocab_path = FLAGS_vocab_path;
+        resource.acoustic_scale = FLAGS_acoustic_scale;
+
+        resource.feature_pipeline_opts =
+            ppspeech::FeaturePipelineOptions::InitFromFlags();
+        resource.model_opts = ppspeech::ModelOptions::InitFromFlags();
+        resource.decoder_opts = ppspeech::DecodeOptions::InitFromFlags();
+        return resource;
+    }
 };
 
 
diff --git a/speechx/speechx/frontend/audio/data_cache.h b/speechx/speechx/frontend/audio/data_cache.h
index 64e9db860ec7fd978e2623de453d8be6d622640c..5fafdeb285aa16714b5c779b53a68b2b3046801e 100644
--- a/speechx/speechx/frontend/audio/data_cache.h
+++ b/speechx/speechx/frontend/audio/data_cache.h
@@ -56,4 +56,4 @@ class DataCache : public FrontendInterface {
 
     DISALLOW_COPY_AND_ASSIGN(DataCache);
 };
-}
\ No newline at end of file
+}  // namespace ppspeech
\ No newline at end of file
diff --git a/speechx/speechx/frontend/audio/feature_pipeline.h b/speechx/speechx/frontend/audio/feature_pipeline.h
index 38a47433ffa3b3e7d2accf9459cd006454a286cf..d91a70e352ffe85689e666b37d1b6e2d8f971e81 100644
--- a/speechx/speechx/frontend/audio/feature_pipeline.h
+++ b/speechx/speechx/frontend/audio/feature_pipeline.h
@@ -46,17 +46,17 @@ struct FeaturePipelineOptions {
     FeatureCacheOptions feature_cache_opts{};
     AssemblerOptions assembler_opts{};
 
-    static FeaturePipelineOptions InitFromFlags(){
+    static FeaturePipelineOptions InitFromFlags() {
         FeaturePipelineOptions opts;
         opts.cmvn_file = FLAGS_cmvn_file;
-        LOG(INFO) << "cmvn file: " <<  opts.cmvn_file;
+        LOG(INFO) << "cmvn file: " << opts.cmvn_file;
 
         // frame options
         kaldi::FrameExtractionOptions frame_opts;
         frame_opts.dither = 0.0;
-        LOG(INFO) << "dither: " <<  frame_opts.dither;
+        LOG(INFO) << "dither: " << frame_opts.dither;
         frame_opts.frame_shift_ms = 10;
-        LOG(INFO) << "frame shift ms: " <<  frame_opts.frame_shift_ms;
+        LOG(INFO) << "frame shift ms: " << frame_opts.frame_shift_ms;
         opts.use_fbank = FLAGS_use_fbank;
         LOG(INFO) << "feature type: " << (opts.use_fbank ? "fbank" : "linear");
         if (opts.use_fbank) {
@@ -76,15 +76,19 @@ struct FeaturePipelineOptions {
 
             opts.linear_spectrogram_opts.frame_opts = frame_opts;
         }
-        LOG(INFO) << "frame length ms: " <<  frame_opts.frame_length_ms;
+        LOG(INFO) << "frame length ms: " << frame_opts.frame_length_ms;
 
         // assembler opts
         opts.assembler_opts.subsampling_rate = FLAGS_subsampling_rate;
-        LOG(INFO) << "subsampling rate: " << opts.assembler_opts.subsampling_rate;
-        opts.assembler_opts.receptive_filed_length = FLAGS_receptive_field_length;
-        LOG(INFO) << "nnet receptive filed length: " <<  opts.assembler_opts.receptive_filed_length;
+        LOG(INFO) << "subsampling rate: "
+                  << opts.assembler_opts.subsampling_rate;
+        opts.assembler_opts.receptive_filed_length =
+            FLAGS_receptive_field_length;
+        LOG(INFO) << "nnet receptive filed length: "
+                  << opts.assembler_opts.receptive_filed_length;
         opts.assembler_opts.nnet_decoder_chunk = FLAGS_nnet_decoder_chunk;
-        LOG(INFO) << "nnet chunk size: " <<  opts.assembler_opts.nnet_decoder_chunk;
+        LOG(INFO) << "nnet chunk size: "
+                  << opts.assembler_opts.nnet_decoder_chunk;
         return opts;
     }
 };
diff --git a/speechx/speechx/frontend/audio/mfcc.h b/speechx/speechx/frontend/audio/mfcc.h
index 62b0078c7d4fe3f1509a72318470fc23b53bc1b1..6c1c2f7dfb6bfbfd3451a07cef6272bcca2d32dd 100644
--- a/speechx/speechx/frontend/audio/mfcc.h
+++ b/speechx/speechx/frontend/audio/mfcc.h
@@ -14,7 +14,6 @@
 
 #pragma once
 
-#include "kaldi/feat/feature-mfcc.h"
 #include "kaldi/feat/feature-mfcc.h"
 #include "kaldi/matrix/kaldi-vector.h"
 
diff --git a/speechx/speechx/nnet/ds2_nnet.h b/speechx/speechx/nnet/ds2_nnet.h
index 2a53e5f7e341e12585a9bf253d2a3112cf6f8c49..4aeec32f388164460f47cf6bb733bab7851abae6 100644
--- a/speechx/speechx/nnet/ds2_nnet.h
+++ b/speechx/speechx/nnet/ds2_nnet.h
@@ -13,6 +13,7 @@
 // limitations under the License.
 #pragma once
 #include <numeric>
+
 #include "base/common.h"
 #include "kaldi/matrix/kaldi-matrix.h"
 #include "nnet/nnet_itf.h"
diff --git a/speechx/speechx/nnet/nnet_itf.h b/speechx/speechx/nnet/nnet_itf.h
index f8105b7f077cf55d1d7398e362bdb30b20e3012a..cc737ce054b084259bee23b3f9e8123f34dac7b7 100644
--- a/speechx/speechx/nnet/nnet_itf.h
+++ b/speechx/speechx/nnet/nnet_itf.h
@@ -48,25 +48,25 @@ struct ModelOptions {
     bool enable_fc_padding{false};
     bool enable_profile{false};
 
-    static ModelOptions InitFromFlags(){
+    static ModelOptions InitFromFlags() {
         ModelOptions opts;
         opts.subsample_rate = FLAGS_subsampling_rate;
-        LOG(INFO) << "subsampling rate: " <<  opts.subsample_rate;
+        LOG(INFO) << "subsampling rate: " << opts.subsample_rate;
         opts.model_path = FLAGS_model_path;
-        LOG(INFO) << "model path: " << opts.model_path ;
+        LOG(INFO) << "model path: " << opts.model_path;
 
         opts.param_path = FLAGS_param_path;
-        LOG(INFO) << "param path: " << opts.param_path ;
+        LOG(INFO) << "param path: " << opts.param_path;
 
         LOG(INFO) << "DS2 param: ";
         opts.cache_names = FLAGS_model_cache_names;
-        LOG(INFO) << "  cache names: " <<    opts.cache_names;
+        LOG(INFO) << "  cache names: " << opts.cache_names;
         opts.cache_shape = FLAGS_model_cache_shapes;
-        LOG(INFO) << "  cache shape: " <<  opts.cache_shape;
+        LOG(INFO) << "  cache shape: " << opts.cache_shape;
         opts.input_names = FLAGS_model_input_names;
-        LOG(INFO) << "  input names: " <<  opts.input_names;
+        LOG(INFO) << "  input names: " << opts.input_names;
         opts.output_names = FLAGS_model_output_names;
-        LOG(INFO) << "  output names: " <<  opts.output_names;
+        LOG(INFO) << "  output names: " << opts.output_names;
         return opts;
     }
 };
diff --git a/speechx/speechx/nnet/u2_nnet.h b/speechx/speechx/nnet/u2_nnet.h
index 697ac20c83682f7681be286a2a24166677a7f0fc..3435bca8ba0dfbdeafe915ac8fc4fda18924a83b 100644
--- a/speechx/speechx/nnet/u2_nnet.h
+++ b/speechx/speechx/nnet/u2_nnet.h
@@ -16,7 +16,6 @@
 
 #include "base/common.h"
 #include "kaldi/matrix/kaldi-matrix.h"
-
 #include "nnet/nnet_itf.h"
 #include "paddle/extension.h"
 #include "paddle/jit/all.h"
diff --git a/speechx/speechx/protocol/websocket/websocket_client.h b/speechx/speechx/protocol/websocket/websocket_client.h
index 886da29295c5cdac19e4ffa91328c2b8291378a6..7ae6d98d5155d50f6389489328da32ea9e5e6022 100644
--- a/speechx/speechx/protocol/websocket/websocket_client.h
+++ b/speechx/speechx/protocol/websocket/websocket_client.h
@@ -13,7 +13,6 @@
 // limitations under the License.
 
 #include "base/common.h"
-
 #include "boost/asio/connect.hpp"
 #include "boost/asio/ip/tcp.hpp"
 #include "boost/beast/core.hpp"
@@ -54,4 +53,4 @@ class WebSocketClient {
     websocket::stream<tcp::socket> ws_{ioc_};
     std::unique_ptr<std::thread> t_{nullptr};
 };
-}
\ No newline at end of file
+}  // namespace ppspeech
\ No newline at end of file
diff --git a/speechx/speechx/protocol/websocket/websocket_server.h b/speechx/speechx/protocol/websocket/websocket_server.h
index 009fc42ed827fed1258f241a3e48936bf71a7daf..8f3360e40ba0b74cc8282f00afc49663cb19bab7 100644
--- a/speechx/speechx/protocol/websocket/websocket_server.h
+++ b/speechx/speechx/protocol/websocket/websocket_server.h
@@ -15,12 +15,10 @@
 #pragma once
 
 #include "base/common.h"
-
 #include "boost/asio/connect.hpp"
 #include "boost/asio/ip/tcp.hpp"
 #include "boost/beast/core.hpp"
 #include "boost/beast/websocket.hpp"
-
 #include "decoder/recognizer.h"
 #include "frontend/audio/feature_pipeline.h"
 
diff --git a/speechx/speechx/utils/file_utils.h b/speechx/speechx/utils/file_utils.h
index 8c56c02eba5fb65c2069d69a78d238fda4fac1c3..a471e024e4844a14e83170be7a3d3e23935415a8 100644
--- a/speechx/speechx/utils/file_utils.h
+++ b/speechx/speechx/utils/file_utils.h
@@ -20,4 +20,4 @@ bool ReadFileToVector(const std::string& filename,
                       std::vector<std::string>* data);
 
 std::string ReadFile2String(const std::string& path);
-}
+}  // namespace ppspeech