diff --git a/doc/fluid/design/algorithm/parameter_average.md b/doc/fluid/design/algorithm/parameter_average.md
index 53d601d3a9..70c5cdecad 100644
--- a/doc/fluid/design/algorithm/parameter_average.md
+++ b/doc/fluid/design/algorithm/parameter_average.md
@@ -7,7 +7,9 @@ Polyak and Juditsky (1992) showed that the test performance of simple average of
Hence, to accelerate the speed of Stochastic Gradient Descent, Averaged Stochastic Gradient Descent (ASGD) was proposed in Polyak and Juditsky (1992). For ASGD, the running average of parameters obtained by SGD, is used as the estimator for 
. The averaging is done as follows:
-
+
+
+
We propose averaging for any optimizer similar to how ASGD performs it, as mentioned above.
diff --git a/doc/fluid/images/2_level_rnn.dot b/doc/fluid/images/2_level_rnn.dot
new file mode 100644
index 0000000000..5d77865061
--- /dev/null
+++ b/doc/fluid/images/2_level_rnn.dot
@@ -0,0 +1,56 @@
+digraph G {
+
+ rnn [label="1st level RNN" shape=box]
+
+ subgraph cluster0 {
+ label = "time step 0"
+
+ sent0 [label="sentence"]
+ sent1 [label="sentence"]
+
+ rnn1 [label="2nd level RNN" shape=box]
+
+ sent0 -> rnn1
+ sent1 -> rnn1
+ }
+
+ subgraph cluster1 {
+ label = "time step 1"
+
+ sent2 [label="sentence"]
+ sent3 [label="sentence"]
+
+ rnn2 [label="2nd level RNN" shape=box]
+
+ sent2 -> rnn2
+ sent3 -> rnn2
+ }
+
+ subgraph cluster2 {
+ label = "time step 2"
+
+ sent4 [label="sentence"]
+ sent5 [label="sentence"]
+
+ rnn3 [label="2nd level RNN" shape=box]
+
+ sent4 -> rnn3
+ sent5 -> rnn3
+ }
+
+
+ para0 [label="paragraph info 0"]
+ para1 [label="paragraph info 1"]
+ para2 [label="paragraph info 2"]
+
+ rnn1 -> para0
+ rnn2 -> para1
+ rnn3 -> para2
+
+ para0 -> rnn
+ para1 -> rnn
+ para2 -> rnn
+
+ chapter [label="chapter info"]
+ rnn -> chapter
+}
diff --git a/doc/fluid/images/2_level_rnn.png b/doc/fluid/images/2_level_rnn.png
new file mode 100644
index 0000000000..0537a75beb
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diff --git a/doc/fluid/images/LOD-and-shape-changes-during-decoding.jpg b/doc/fluid/images/LOD-and-shape-changes-during-decoding.jpg
new file mode 100644
index 0000000000..8b0d90f7b9
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diff --git a/doc/fluid/images/asgd.gif b/doc/fluid/images/asgd.gif
new file mode 100644
index 0000000000..4a0da7bf6d
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diff --git a/doc/fluid/images/batch_norm_fork.dot b/doc/fluid/images/batch_norm_fork.dot
new file mode 100644
index 0000000000..4bc47713cb
--- /dev/null
+++ b/doc/fluid/images/batch_norm_fork.dot
@@ -0,0 +1,25 @@
+digraph ImageBatchNormForkGragh {
+ subgraph cluster_before {
+ Prev [label="...", shape=plaintext];
+ Rnn [label="rnn_op", shape=box];
+ BatchNorm [label="batch_norm_op", shape=box];
+ Fc [label="fc_op", shape=box];
+ After [label="...", shape=plaintext];
+ Prev -> Rnn -> BatchNorm -> Fc -> After;
+ label="original";
+ }
+
+ subgraph cluster_after {
+ Prev2 [label="...", shape=plaintext];
+ Rnn2 [label="rnn_op", shape=box];
+ BatchNorm2_1 [label="train_batch_norm_op", shape=box];
+ BatchNorm2_2 [label="infer_batch_norm_op", shape=box];
+ Fc2_1 [label="fc_op", shape=box];
+ Fc2_2 [label="fc_op", shape=box];
+ After2_1 [label="...", shape=plaintext];
+ After2_2 [label="...", shape=plaintext];
+ Prev2 -> Rnn2 -> BatchNorm2_1 -> Fc2_1 -> After2_1;
+ Rnn2 -> BatchNorm2_2 ->Fc2_2 ->After2_2
+ label="forked";
+ }
+}
diff --git a/doc/fluid/images/batch_norm_fork.png b/doc/fluid/images/batch_norm_fork.png
new file mode 100644
index 0000000000..aded62bce5
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diff --git a/doc/fluid/images/batch_norm_op_kernel.png b/doc/fluid/images/batch_norm_op_kernel.png
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index 0000000000..a99ce81ff3
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diff --git a/doc/fluid/images/beam_search.png b/doc/fluid/images/beam_search.png
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index 0000000000..7f7e35f342
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diff --git a/doc/fluid/images/ci_build_whl.png b/doc/fluid/images/ci_build_whl.png
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index 0000000000..232762b82a
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diff --git a/doc/fluid/images/compiler.graffle b/doc/fluid/images/compiler.graffle
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diff --git a/doc/fluid/images/compiler.png b/doc/fluid/images/compiler.png
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index 0000000000..65d34f841a
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diff --git a/doc/fluid/images/control_flow_graph.png b/doc/fluid/images/control_flow_graph.png
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index 0000000000..3579998e58
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diff --git a/doc/fluid/images/dataflow_equations.png b/doc/fluid/images/dataflow_equations.png
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index 0000000000..c10f7f69f4
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diff --git a/doc/fluid/images/dcgan.png b/doc/fluid/images/dcgan.png
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index 0000000000..15e8e290a1
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index 0000000000..026becc4d9
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diff --git a/doc/fluid/images/dist-graph.graffle b/doc/fluid/images/dist-graph.graffle
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index 0000000000..941399c6ce
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diff --git a/doc/fluid/images/dist-graph.png b/doc/fluid/images/dist-graph.png
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diff --git a/doc/fluid/images/distributed_architecture.graffle b/doc/fluid/images/distributed_architecture.graffle
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index 0000000000..d1b6014134
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diff --git a/doc/fluid/images/distributed_architecture.png b/doc/fluid/images/distributed_architecture.png
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index 0000000000..29c7b0c078
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diff --git a/doc/fluid/images/ds2_network.png b/doc/fluid/images/ds2_network.png
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index 0000000000..1a5b2184d4
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diff --git a/doc/fluid/images/feed_forward.png b/doc/fluid/images/feed_forward.png
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index 0000000000..d312371a04
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diff --git a/doc/fluid/images/feed_forward_regularized.png b/doc/fluid/images/feed_forward_regularized.png
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index 0000000000..677e99bfd9
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diff --git a/doc/fluid/images/fluid-compiler.graffle b/doc/fluid/images/fluid-compiler.graffle
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index 0000000000..c933df2cb8
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diff --git a/doc/fluid/images/fluid-compiler.png b/doc/fluid/images/fluid-compiler.png
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index 0000000000..1b0ffed203
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diff --git a/doc/fluid/images/graph_construction_example.bash b/doc/fluid/images/graph_construction_example.bash
new file mode 100755
index 0000000000..35e6997abd
--- /dev/null
+++ b/doc/fluid/images/graph_construction_example.bash
@@ -0,0 +1,11 @@
+cat ./graph_construction_example.dot | \
+ sed 's/color=red/color=red, style=invis/g' | \
+ sed 's/color=green/color=green, style=invis/g' | \
+ dot -Tpng > graph_construction_example_forward_only.png
+
+cat ./graph_construction_example.dot | \
+ sed 's/color=green/color=green, style=invis/g' | \
+ dot -Tpng > graph_construction_example_forward_backward.png
+
+cat ./graph_construction_example.dot | \
+ dot -Tpng > graph_construction_example_all.png
diff --git a/doc/fluid/images/graph_construction_example.dot b/doc/fluid/images/graph_construction_example.dot
new file mode 100644
index 0000000000..e115f9844b
--- /dev/null
+++ b/doc/fluid/images/graph_construction_example.dot
@@ -0,0 +1,68 @@
+digraph ImageClassificationGraph {
+ ///////// The forward part /////////
+ FeedX [label="Feed", color=blue, shape=box];
+ FeedY [label="Feed", color=blue, shape=box];
+ InitW [label="Init", color=blue, shape=diamond];
+ Initb [label="Init", color=blue, shape=diamond];
+ FC [label="FC", color=blue, shape=box];
+ MSE [label="MSE", color=blue, shape=box];
+
+ x [label="x", color=blue, shape=oval];
+ l [label="l", color=blue, shape=oval];
+ y [label="y", color=blue, shape=oval];
+ W [label="W", color=blue, shape=doublecircle];
+ b [label="b", color=blue, shape=doublecircle];
+ cost [label="cost", color=blue, shape=oval];
+
+ FeedX -> x -> FC -> y -> MSE -> cost [color=blue];
+ FeedY -> l [color=blue];
+ InitW -> W [color=blue];
+ Initb -> b [color=blue];
+ W -> FC [color=blue];
+ b -> FC [color=blue];
+ l -> MSE [color=blue];
+
+ ////////// The backward part /////////
+ MSE_Grad [label="MSE_grad", color=red, shape=box];
+ FC_Grad [label="FC_grad", color=red, shape=box];
+
+ d_cost [label="d cost", color=red, shape=oval];
+ d_y [label="d y", color=red, shape=oval];
+ d_b [label="d b", color=red, shape=oval];
+ d_W [label="d W", color=red, shape=oval];
+
+ cost -> MSE_Grad [color=red];
+ d_cost -> MSE_Grad [color=red];
+ l -> MSE_Grad [color=red];
+ y -> MSE_Grad -> d_y [color=red];
+
+ x -> FC_Grad [color=red];
+ y -> FC_Grad [color=red];
+ d_y -> FC_Grad [color=red];
+ W -> FC_Grad -> d_W [color=red];
+ b -> FC_Grad -> d_b [color=red];
+
+ ////////// The optimizaiton part //////////
+
+ OPT_W [label="SGD", color=green, shape=box];
+ OPT_b [label="SGD", color=green, shape=box];
+
+ W -> OPT_W [color=green];
+ b -> OPT_b [color=green];
+ d_W -> OPT_W -> W [color=green];
+ d_b -> OPT_b -> b [color=green];
+
+ ////////// Groupings //////////
+
+ subgraph clusterMSE {
+ style=invis;
+ MSE;
+ MSE_Grad;
+ }
+
+ subgraph clusterFC {
+ style=invis;
+ FC;
+ FC_Grad;
+ }
+}
diff --git a/doc/fluid/images/graph_construction_example_all.png b/doc/fluid/images/graph_construction_example_all.png
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index 0000000000..261611a572
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diff --git a/doc/fluid/images/graph_construction_example_forward_backward.png b/doc/fluid/images/graph_construction_example_forward_backward.png
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index 0000000000..4c69687f4a
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index 0000000000..e668c16e0c
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diff --git a/doc/fluid/images/l1_regularization.png b/doc/fluid/images/l1_regularization.png
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diff --git a/doc/fluid/images/local-graph.graffle b/doc/fluid/images/local-graph.graffle
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diff --git a/doc/fluid/images/profiler.png b/doc/fluid/images/profiler.png
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index 0000000000..d57b71ca88
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diff --git a/doc/fluid/images/readers.png b/doc/fluid/images/readers.png
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index 0000000000..fd59168ce1
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diff --git a/doc/fluid/images/remote_executor.graffle b/doc/fluid/images/remote_executor.graffle
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index 0000000000..41b2067311
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diff --git a/doc/fluid/images/remote_executor.png b/doc/fluid/images/remote_executor.png
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index 0000000000..744e2fb2e0
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diff --git a/doc/fluid/images/rnn.dot b/doc/fluid/images/rnn.dot
new file mode 100644
index 0000000000..c1141cd9c9
--- /dev/null
+++ b/doc/fluid/images/rnn.dot
@@ -0,0 +1,87 @@
+digraph G {
+ label = "simple RNN implementation"
+
+ ranksep=2;
+
+ //graph [nodesep=1, ranksep=1];
+
+ node[nodesep=1]
+
+ subgraph cluster0 {
+ label = "global scope"
+ rankdir = TB
+ W
+ boot_memory
+ input
+ output
+ }
+
+ subgraph cluster1 {
+ label = "step-scope 0"
+ rankdir = TB
+ memory0[label="memory"]
+ prememory0[label="pre-memory"]
+ step_input0[label="step input"]
+ step_output0[label="step output"]
+ }
+
+ subgraph cluster2 {
+ label = "step-scope 1"
+ rankdir = TB
+ memory1[label="memory"]
+ prememory1[label="pre-memory"]
+ step_input1[label="step input"]
+ step_output1[label="step output"]
+ }
+
+ subgraph cluster3 {
+ label = "step-scope 2"
+ rankdir = TB
+ memory2[label="memory"]
+ prememory2[label="pre-memory"]
+ step_input2[label="step input"]
+ step_output2[label="step output"]
+ }
+
+ stepnet [shape=box]
+ stepnet0 [shape=box, style=dashed]
+ stepnet1 [shape=box, style=dashed]
+ stepnet2 [shape=box, style=dashed]
+
+
+ edge[color=blue]
+ boot_memory -> prememory0 [label="init" color="blue"]
+ memory0 -> prememory1 [label="copy/reference" color="blue"]
+ memory1 -> prememory2 [label="copy/reference" color="blue"]
+
+ edge[color=black]
+ W -> stepnet0[constraint=false, style=dashed]
+ W -> stepnet1[constraint=false, style=dashed]
+ W -> stepnet2[constraint=false, style=dashed]
+
+ memory0 -> stepnet0[style=dashed]
+ prememory0 -> stepnet0 -> step_output0[style=dashed]
+
+ memory1 -> stepnet1[style=dashed]
+ prememory1 -> stepnet1 -> step_output1[style=dashed]
+
+ memory2 -> stepnet2[style=dashed]
+ prememory2 -> stepnet2 -> step_output2[style=dashed]
+
+ input -> step_input0
+ input -> step_input1
+ input -> step_input2
+
+ step_input0 -> stepnet0 [style=dashed]
+ step_input1 -> stepnet1[style=dashed]
+ step_input2 -> stepnet2[style=dashed]
+
+ step_output0 -> output
+ step_output1 -> output
+ step_output2 -> output
+
+ stepnet0 -> stepnet[style=dashed]
+ stepnet1 -> stepnet[style=dashed]
+ stepnet2 -> stepnet[style=dashed]
+
+}
diff --git a/doc/fluid/images/rnn.jpg b/doc/fluid/images/rnn.jpg
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index 0000000000..9867e404cf
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index 0000000000..e139e373fe
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diff --git a/doc/fluid/images/rnn_2level_data.dot b/doc/fluid/images/rnn_2level_data.dot
new file mode 100644
index 0000000000..1d85ae2617
--- /dev/null
+++ b/doc/fluid/images/rnn_2level_data.dot
@@ -0,0 +1,75 @@
+digraph G {
+ chapter [label="chapter"]
+
+ subgraph cluster0 {
+ label = "paragraph 0"
+
+ top_rnn0[label="top rnn step 0" shape=box]
+
+ p0 [label="paragraph 0"]
+ p1 [label="paragraph 1"]
+ }
+
+ subgraph cluster1{
+ label = "paragraph 1"
+
+ top_rnn1[label="top rnn step 1" shape=box]
+
+ p2 [label="paragraph 0"]
+ p3 [label="paragraph 1"]
+ }
+
+ subgraph cluster_p0 {
+ label = "sentence 0"
+
+ low_rnn0 [label="low rnn step 0" shape=box]
+ s00 [label="sentence 0"]
+ s01 [label="sentence 1"]
+
+ low_rnn0 -> s00
+ low_rnn0 -> s01
+ }
+
+ subgraph cluster_p1 {
+ label = "sentence 1"
+ low_rnn1 [label="low rnn step 1" shape=box]
+ s10 [label="sentence 0"]
+ s11 [label="sentence 1"]
+ low_rnn1 -> s10
+ low_rnn1 -> s11
+ }
+
+ subgraph cluster_p2 {
+ label = "sentence 1"
+ low_rnn2 [label="low rnn step 0" shape=box]
+ s20 [label="sentence 0"]
+ s21 [label="sentence 1"]
+ low_rnn2 -> s20
+ low_rnn2 -> s21
+ }
+
+ subgraph cluster_p3 {
+ label = "sentence 1"
+ low_rnn3 [label="low rnn step 1" shape=box]
+ s30 [label="sentence 0"]
+ s31 [label="sentence 1"]
+ low_rnn3 -> s30
+ low_rnn3 -> s31
+ }
+
+
+ chapter -> top_rnn0
+ chapter -> top_rnn1
+
+ top_rnn0 -> p0
+ top_rnn0 -> p1
+ top_rnn1 -> p2
+ top_rnn1 -> p3
+
+
+ p0 -> low_rnn0
+ p1 -> low_rnn1
+ p2 -> low_rnn2
+ p3 -> low_rnn3
+
+}
diff --git a/doc/fluid/images/rnn_2level_data.png b/doc/fluid/images/rnn_2level_data.png
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index 0000000000..4be81b2430
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diff --git a/doc/fluid/images/single-thread@3x.png b/doc/fluid/images/single-thread@3x.png
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index 0000000000..4083aebfdd
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diff --git a/doc/fluid/images/sparse_update.graffle b/doc/fluid/images/sparse_update.graffle
new file mode 100644
index 0000000000..08d689a58f
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diff --git a/doc/fluid/images/sparse_update.png b/doc/fluid/images/sparse_update.png
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index 0000000000..8c872e6ac4
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diff --git a/doc/fluid/images/test.dot b/doc/fluid/images/test.dot
new file mode 100644
index 0000000000..62c69b8fc8
--- /dev/null
+++ b/doc/fluid/images/test.dot
@@ -0,0 +1,35 @@
+
+digraph Test {
+ z -> generator -> G_img;
+ G_img -> discriminator -> D_f -> d_loss_f;
+ label0 -> d_loss_f -> d_loss;
+
+ img -> discriminator -> D_t -> d_loss_t;
+ label1 -> d_loss_t -> d_loss;
+
+ d_loss -> d_loss_t[color=red, style=dashed];
+ d_loss -> d_loss_f[color=red, style=dashed];
+ d_loss_t -> D_t[color=red, style=dashed];
+ d_loss_f -> D_f[color=red, style=dashed];
+ D_t -> discriminator[color=red, style=dashed];
+ D_f -> discriminator[color=red, style=dashed];
+
+ D_f -> g_loss;
+ label2 -> g_loss;
+
+ g_loss -> D_f[color=green, style=dashed];
+ D_f -> discriminator[color=green, style=dashed];
+ discriminator -> G_img[color=green, style=dashed];
+ G_img -> generator[color=green, style=dashed];
+
+ discriminator [color=red, shape=box];
+ generator [color=green, shape=box];
+ z [shape=diamond];
+ img [shape=diamond];
+ label0 [shape=diamond];
+ label1 [shape=diamond];
+ label2 [shape=diamond];
+
+ d_loss [color=red];
+ g_loss [color=green];
+}
diff --git a/doc/fluid/images/test.dot.png b/doc/fluid/images/test.dot.png
new file mode 100644
index 0000000000..4e121a40b9
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diff --git a/doc/fluid/images/theta_star.gif b/doc/fluid/images/theta_star.gif
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diff --git a/doc/fluid/images/timeline.jpeg b/doc/fluid/images/timeline.jpeg
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diff --git a/doc/fluid/images/tracing.jpeg b/doc/fluid/images/tracing.jpeg
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