fix typos and comments (#326)

include/LightGBM/application.h

@@ -19,8 +19,8 @@ class Metric;
 * \brief The main entrance of LightGBM. this application has two tasks:
 *        Train and Predict.
 *        Train task will train a new model
-*        Predict task will predicting the scores of test data using exsiting model,
-*        and saving the score to disk.
+*        Predict task will predict the scores of test data using exsisting model,
+*        and save the score to disk.
 */
 class Application {
 public:
@@ -41,7 +41,7 @@ private:
   template<typename T>
   T GlobalSyncUpByMin(T& local);
 
-  /*! \brief Load parametes from command line and config file*/
+  /*! \brief Load parameters from command line and config file*/
   void LoadParameters(int argc, char** argv);
 
   /*! \brief Load data, including training data and validation data*/

src/application/predictor.hpp

@@ -19,7 +19,7 @@
 namespace LightGBM {
 
 /*!
-* \brief Used to prediction data with input model
+* \brief Used to predict data with input model
 */
 class Predictor {
 public:
@@ -27,7 +27,7 @@ public:
   * \brief Constructor
   * \param boosting Input boosting model
   * \param is_raw_score True if need to predict result with raw score
-  * \param predict_leaf_index True if output leaf index instead of prediction score
+  * \param is_predict_leaf_index True if output leaf index instead of prediction score
   */
   Predictor(const Boosting* boosting, bool is_raw_score, bool is_predict_leaf_index) {
     boosting_ = boosting;
@@ -69,14 +69,13 @@ public:
   ~Predictor() {
   }
 
-  inline const PredictFunction& GetPredictFunction() {
+  inline const PredictFunction& GetPredictFunction() const {
     return predict_fun_;
   }
 
   /*!
   * \brief predicting on data, then saving result to disk
   * \param data_filename Filename of data
-  * \param has_label True if this data contains label
   * \param result_filename Filename of output result
   */
   void Predict(const char* data_filename, const char* result_filename, bool has_header) {

src/io/dataset.cpp

@@ -4,6 +4,7 @@
 #include <LightGBM/utils/threading.h>
 #include <LightGBM/utils/array_args.h>
 
+#include <chrono>
 #include <cstdio>
 #include <unordered_map>
 #include <limits>