diff --git a/paddle/fluid/API.spec b/paddle/fluid/API.spec
index 51eda469b773a3..d10ff999f6eb2d 100644
--- a/paddle/fluid/API.spec
+++ b/paddle/fluid/API.spec
@@ -1,6 +1,6 @@
-paddle.base.optimizer.PipelineOptimizer (paddle.base.optimizer.PipelineOptimizer, ('document', '2e55a29dbeb874934f7a1a1af3a22b8c'))
-paddle.base.optimizer.PipelineOptimizer.__init__ (ArgSpec(args=['self', 'optimizer', 'num_microbatches', 'start_cpu_core_id'], varargs=None, keywords=None, defaults=(1, 0)), ('document', '6adf97f83acf6453d4a6a4b1070f3754'))
-paddle.base.optimizer.PipelineOptimizer.minimize (ArgSpec(args=['self', 'loss', 'startup_program', 'parameter_list', 'no_grad_set'], varargs=None, keywords=None, defaults=(None, None, None)), ('document', '6adf97f83acf6453d4a6a4b1070f3754'))
+paddle.incubate.optimizer.PipelineOptimizer (paddle.incubate.optimizer.PipelineOptimizer, ('document', '2e55a29dbeb874934f7a1a1af3a22b8c'))
+paddle.incubate.optimizer.PipelineOptimizer.__init__ (ArgSpec(args=['self', 'optimizer', 'num_microbatches', 'start_cpu_core_id'], varargs=None, keywords=None, defaults=(1, 0)), ('document', '6adf97f83acf6453d4a6a4b1070f3754'))
+paddle.incubate.optimizer.PipelineOptimizer.minimize (ArgSpec(args=['self', 'loss', 'startup_program', 'parameter_list', 'no_grad_set'], varargs=None, keywords=None, defaults=(None, None, None)), ('document', '6adf97f83acf6453d4a6a4b1070f3754'))
 paddle.audio.features (ArgSpec(), ('document', 'd41d8cd98f00b204e9800998ecf8427e'))
 paddle.audio.features.layers.LogMelSpectrogram (ArgSpec(), ('document', 'c38b53606aa89215c4f00d3833e158b8'))
 paddle.audio.features.layers.LogMelSpectrogram.forward (ArgSpec(args=['self', 'x'], varargs=None, varkw=None, defaults=None, kwonlyargs=[], kwonlydefaults=None, annotations={'return': <class 'paddle.Tensor'>, 'x': <class 'paddle.Tensor'>}), ('document', '6c14f6f78dc697a6981cf90412e2f1ea'))
diff --git a/python/paddle/dataset/uci_housing.py b/python/paddle/dataset/uci_housing.py
index e834e2526318a8..d5e68db9d69547 100644
--- a/python/paddle/dataset/uci_housing.py
+++ b/python/paddle/dataset/uci_housing.py
@@ -51,7 +51,7 @@
 UCI_TRAIN_DATA = None
 UCI_TEST_DATA = None
 
-FLUID_URL_MODEL = 'https://github.com/PaddlePaddle/book/raw/develop/01.fit_a_line/base/fit_a_line.fluid.tar'
+FLUID_URL_MODEL = 'https://github.com/PaddlePaddle/book/raw/develop/01.fit_a_line/fluid/fit_a_line.fluid.tar'
 FLUID_MD5_MODEL = '6e6dd637ccd5993961f68bfbde46090b'
 
 
@@ -150,7 +150,7 @@ def reader():
     return reader
 
 
-def base_model():
+def fluid_model():
     parameter_tar = paddle.dataset.common.download(
         FLUID_URL_MODEL, 'uci_housing', FLUID_MD5_MODEL, 'fit_a_line.fluid.tar'
     )