Merge pull request #576 from JiabinYang/book01_refine

Refine the comments and the inference result format for "01.fit_a_line"

01.fit_a_line/README.cn.md

@@ -100,6 +100,7 @@ $$MSE=\frac{1}{n}\sum_{i=1}^{n}{(\hat{Y_i}-Y_i)}^2$$
 import paddle
 import paddle.fluid as fluid
 import numpy
+from __future__ import print_function
 ```
 
 我们通过uci_housing模块引入了数据集合[UCI Housing Data Set](https://archive.ics.uci.edu/ml/datasets/Housing)
@@ -179,7 +180,7 @@ feed_order=['x', 'y']
 除此之外，可以定义一个事件相应器来处理类似`打印训练进程`的事件：
 
 ```python
-# Specify the directory path to save the parameters
+# Specify the directory to save the parameters
 params_dirname = "fit_a_line.inference.model"
 
 # Plot data
@@ -190,11 +191,11 @@ plot_cost = Ploter(train_title, test_title)
 
 step = 0
 
-# event_handler to print training and testing info
+# event_handler prints training and testing info
 def event_handler_plot(event):
     global step
     if isinstance(event, fluid.EndStepEvent):
-        if event.step % 10 == 0: # every 10 batches, record a test cost
+        if event.step % 10 == 0: # record the test cost every 10 seconds
             test_metrics = trainer.test(
                 reader=test_reader, feed_order=feed_order)
 
@@ -251,10 +252,20 @@ inferencer = fluid.Inferencer(
     infer_func=inference_program, param_path=params_dirname, place=place)
 
 batch_size = 10
-tensor_x = numpy.random.uniform(0, 10, [batch_size, 13]).astype("float32")
+test_reader = paddle.batch(paddle.dataset.uci_housing.test(),batch_size=batch_size)
+test_data = test_reader().next()
+test_feat = numpy.array([data[0] for data in test_data]).astype("float32")
+test_label = numpy.array([data[1] for data in test_data]).astype("float32")
 
-results = inferencer.infer({'x': tensor_x})
-print("infer results: ", results[0])
+results = inferencer.infer({'x': test_feat})
+
+print("infer results: (House Price)")
+for k in range(0, batch_size-1):
+    print("%d. %f" % (k, results[0][k]))
+
+print("\nground truth:")
+for k in range(0, batch_size-1):
+    print("%d. %f" % (k, test_label[k]))
 ```
 
 ## 总结

01.fit_a_line/README.md

@@ -108,6 +108,7 @@ Our program starts with importing necessary packages:
 import paddle
 import paddle.fluid as fluid
 import numpy
+from __future__ import print_function
 ```
 
 We encapsulated the [UCI Housing Data Set](https://archive.ics.uci.edu/ml/datasets/Housing) in our Python module `uci_housing`.  This module can
@@ -189,7 +190,7 @@ feed_order=['x', 'y']
 Moreover, an event handler is provided to print the training progress:
 
 ```python
-# Specify the directory path to save the parameters
+# Specify the directory to save the parameters
 params_dirname = "fit_a_line.inference.model"
 
 # Plot data
@@ -200,11 +201,11 @@ plot_cost = Ploter(train_title, test_title)
 
 step = 0
 
-# event_handler to print training and testing info
+# event_handler prints training and testing info
 def event_handler_plot(event):
     global step
     if isinstance(event, fluid.EndStepEvent):
-        if event.step % 10 == 0: # every 10 batches, record a test cost
+        if event.step % 10 == 0: #record a test cost every 10 batches
             test_metrics = trainer.test(
                 reader=test_reader, feed_order=feed_order)
 
@@ -263,10 +264,20 @@ inferencer = fluid.Inferencer(
     infer_func=inference_program, param_path=params_dirname, place=place)
 
 batch_size = 10
-tensor_x = numpy.random.uniform(0, 10, [batch_size, 13]).astype("float32")
+test_reader = paddle.batch(paddle.dataset.uci_housing.test(),batch_size=batch_size)
+test_data = test_reader().next()
+test_feat = numpy.array([data[0] for data in test_data]).astype("float32")
+test_label = numpy.array([data[1] for data in test_data]).astype("float32")
 
-results = inferencer.infer({'x': tensor_x})
-print("infer results: ", results[0])
+results = inferencer.infer({'x': test_feat})
+
+print("infer results: (House Price)")
+for k in range(0, batch_size-1):
+    print("%d. %f" % (k, results[0][k]))
+
+print("\nground truth:")
+for k in range(0, batch_size-1):
+    print("%d. %f" % (k, test_label[k]))
 ```
 
 ## Summary

01.fit_a_line/index.cn.html

@@ -142,6 +142,7 @@ $$MSE=\frac{1}{n}\sum_{i=1}^{n}{(\hat{Y_i}-Y_i)}^2$$
 import paddle
 import paddle.fluid as fluid
 import numpy
+from __future__ import print_function
 ```
 
 我们通过uci_housing模块引入了数据集合[UCI Housing Data Set](https://archive.ics.uci.edu/ml/datasets/Housing)
@@ -221,7 +222,7 @@ feed_order=['x', 'y']
 除此之外，可以定义一个事件相应器来处理类似`打印训练进程`的事件：
 
 ```python
-# Specify the directory path to save the parameters
+# Specify the directory to save the parameters
 params_dirname = "fit_a_line.inference.model"
 
 # Plot data
@@ -232,11 +233,11 @@ plot_cost = Ploter(train_title, test_title)
 
 step = 0
 
-# event_handler to print training and testing info
+# event_handler prints training and testing info
 def event_handler_plot(event):
     global step
     if isinstance(event, fluid.EndStepEvent):
-        if event.step % 10 == 0: # every 10 batches, record a test cost
+        if event.step % 10 == 0: # record the test cost every 10 seconds
             test_metrics = trainer.test(
                 reader=test_reader, feed_order=feed_order)
 
@@ -293,10 +294,20 @@ inferencer = fluid.Inferencer(
     infer_func=inference_program, param_path=params_dirname, place=place)
 
 batch_size = 10
-tensor_x = numpy.random.uniform(0, 10, [batch_size, 13]).astype("float32")
+test_reader = paddle.batch(paddle.dataset.uci_housing.test(),batch_size=batch_size)
+test_data = test_reader().next()
+test_feat = numpy.array([data[0] for data in test_data]).astype("float32")
+test_label = numpy.array([data[1] for data in test_data]).astype("float32")
 
-results = inferencer.infer({'x': tensor_x})
-print("infer results: ", results[0])
+results = inferencer.infer({'x': test_feat})
+
+print("infer results: (House Price)")
+for k in range(0, batch_size-1):
+    print("%d. %f" % (k, results[0][k]))
+
+print("\nground truth:")
+for k in range(0, batch_size-1):
+    print("%d. %f" % (k, test_label[k]))
 ```
 
 ## 总结

01.fit_a_line/index.html

@@ -150,6 +150,7 @@ Our program starts with importing necessary packages:
 import paddle
 import paddle.fluid as fluid
 import numpy
+from __future__ import print_function
 ```
 
 We encapsulated the [UCI Housing Data Set](https://archive.ics.uci.edu/ml/datasets/Housing) in our Python module `uci_housing`.  This module can
@@ -231,7 +232,7 @@ feed_order=['x', 'y']
 Moreover, an event handler is provided to print the training progress:
 
 ```python
-# Specify the directory path to save the parameters
+# Specify the directory to save the parameters
 params_dirname = "fit_a_line.inference.model"
 
 # Plot data
@@ -242,11 +243,11 @@ plot_cost = Ploter(train_title, test_title)
 
 step = 0
 
-# event_handler to print training and testing info
+# event_handler prints training and testing info
 def event_handler_plot(event):
     global step
     if isinstance(event, fluid.EndStepEvent):
-        if event.step % 10 == 0: # every 10 batches, record a test cost
+        if event.step % 10 == 0: #record a test cost every 10 batches
             test_metrics = trainer.test(
                 reader=test_reader, feed_order=feed_order)
 
@@ -305,10 +306,20 @@ inferencer = fluid.Inferencer(
     infer_func=inference_program, param_path=params_dirname, place=place)
 
 batch_size = 10
-tensor_x = numpy.random.uniform(0, 10, [batch_size, 13]).astype("float32")
+test_reader = paddle.batch(paddle.dataset.uci_housing.test(),batch_size=batch_size)
+test_data = test_reader().next()
+test_feat = numpy.array([data[0] for data in test_data]).astype("float32")
+test_label = numpy.array([data[1] for data in test_data]).astype("float32")
 
-results = inferencer.infer({'x': tensor_x})
-print("infer results: ", results[0])
+results = inferencer.infer({'x': test_feat})
+
+print("infer results: (House Price)")
+for k in range(0, batch_size-1):
+    print("%d. %f" % (k, results[0][k]))
+
+print("\nground truth:")
+for k in range(0, batch_size-1):
+    print("%d. %f" % (k, test_label[k]))
 ```
 
 ## Summary