diff --git a/.gitignore b/.gitignore
index 8d5cec0..fb991bc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -129,3 +129,4 @@ TEMP-L.sh
 # Visual Studio Code
 .vscode
 mlruns
+outputs
diff --git a/exps/trading/workflow_test.py b/exps/trading/workflow_test.py
deleted file mode 100644
index e9f98e0..0000000
--- a/exps/trading/workflow_test.py
+++ /dev/null
@@ -1,94 +0,0 @@
-#####################################################
-# Copyright (c) Xuanyi Dong [GitHub D-X-Y], 2019.01 #
-#####################################################
-# Refer to:
-# - https://github.com/microsoft/qlib/blob/main/examples/workflow_by_code.ipynb
-# - https://github.com/microsoft/qlib/blob/main/examples/workflow_by_code.py
-# python exps/trading/workflow_test.py
-#####################################################
-import sys, site
-from pathlib import Path
-
-lib_dir = (Path(__file__).parent / '..' / '..' / 'lib').resolve()
-if str(lib_dir) not in sys.path: sys.path.insert(0, str(lib_dir))
-
-import qlib
-import pandas as pd
-from qlib.config import REG_CN
-from qlib.contrib.model.gbdt import LGBModel
-from qlib.contrib.data.handler import Alpha158
-from qlib.contrib.strategy.strategy import TopkDropoutStrategy
-from qlib.contrib.evaluate import (
-    backtest as normal_backtest,
-    risk_analysis,
-)
-from qlib.utils import exists_qlib_data, init_instance_by_config
-from qlib.workflow import R
-from qlib.workflow.record_temp import SignalRecord, PortAnaRecord
-from qlib.utils import flatten_dict
-
-
-# use default data
-# NOTE: need to download data from remote: python scripts/get_data.py qlib_data_cn --target_dir ~/.qlib/qlib_data/cn_data
-provider_uri = "~/.qlib/qlib_data/cn_data"  # target_dir
-if not exists_qlib_data(provider_uri):
-    print(f"Qlib data is not found in {provider_uri}")
-    sys.path.append(str(scripts_dir))
-    from get_data import GetData
-    GetData().qlib_data(target_dir=provider_uri, region=REG_CN)
-qlib.init(provider_uri=provider_uri, region=REG_CN)
-
-
-market = "csi300"
-benchmark = "SH000300"
-
-
-###################################
-# train model
-###################################
-data_handler_config = {
-    "start_time": "2008-01-01",
-    "end_time": "2020-08-01",
-    "fit_start_time": "2008-01-01",
-    "fit_end_time": "2014-12-31",
-    "instruments": market,
-}
-
-task = {
-    "model": {
-        "class": "QuantTransformer",
-        "module_path": "trade_models",
-        "kwargs": {
-            "loss": "mse",
-            "GPU": "0",
-            "metric": "loss",
-        },
-    },
-    "dataset": {
-        "class": "DatasetH",
-        "module_path": "qlib.data.dataset",
-        "kwargs": {
-            "handler": {
-                "class": "Alpha158",
-                "module_path": "qlib.contrib.data.handler",
-                "kwargs": data_handler_config,
-            },
-            "segments": {
-                "train": ("2008-01-01", "2014-12-31"),
-                "valid": ("2015-01-01", "2016-12-31"),
-                "test": ("2017-01-01", "2020-08-01"),
-            },
-        },
-    },
-}
-
-# model initiaiton
-model = init_instance_by_config(task["model"])
-dataset = init_instance_by_config(task["dataset"])
-
-# start exp to train model
-with R.start(experiment_name="train_model"):
-    R.log_params(**flatten_dict(task))
-    model.fit(dataset)
-    R.save_objects(trained_model=model)
-    rid = R.get_recorder().id
diff --git a/exps/trading/workflow_tt.py b/exps/trading/workflow_tt.py
new file mode 100644
index 0000000..d033dae
--- /dev/null
+++ b/exps/trading/workflow_tt.py
@@ -0,0 +1,100 @@
+#####################################################
+# Copyright (c) Xuanyi Dong [GitHub D-X-Y], 2019.01 #
+#####################################################
+# Refer to:
+# - https://github.com/microsoft/qlib/blob/main/examples/workflow_by_code.ipynb
+# - https://github.com/microsoft/qlib/blob/main/examples/workflow_by_code.py
+# python exps/trading/workflow_tt.py
+#####################################################
+import sys, site, argparse
+from pathlib import Path
+
+lib_dir = (Path(__file__).parent / ".." / ".." / "lib").resolve()
+if str(lib_dir) not in sys.path:
+    sys.path.insert(0, str(lib_dir))
+
+import qlib
+from qlib.config import C
+import pandas as pd
+from qlib.config import REG_CN
+from qlib.contrib.model.gbdt import LGBModel
+from qlib.contrib.data.handler import Alpha158
+from qlib.contrib.strategy.strategy import TopkDropoutStrategy
+from qlib.contrib.evaluate import (
+    backtest as normal_backtest,
+    risk_analysis,
+)
+from qlib.utils import exists_qlib_data, init_instance_by_config
+from qlib.workflow import R
+from qlib.workflow.record_temp import SignalRecord, PortAnaRecord
+from qlib.utils import flatten_dict
+
+
+def main(xargs):
+    dataset_config = {
+        "class": "DatasetH",
+        "module_path": "qlib.data.dataset",
+        "kwargs": {
+            "handler": {
+                "class": "Alpha360",
+                "module_path": "qlib.contrib.data.handler",
+                "kwargs": {
+                    "start_time": "2008-01-01",
+                    "end_time": "2020-08-01",
+                    "fit_start_time": "2008-01-01",
+                    "fit_end_time": "2014-12-31",
+                    "instruments": xargs.market,
+                    "infer_processors": [
+                        {"class": "RobustZScoreNorm", "kwargs": {"fields_group": "feature", "clip_outlier": True}},
+                        {"class": "Fillna", "kwargs": {"fields_group": "feature"}},
+                    ],
+                    "learn_processors": [
+                        {"class": "DropnaLabel"},
+                        {"class": "CSRankNorm", "kwargs": {"fields_group": "label"}},
+                    ],
+                    "label": ["Ref($close, -2) / Ref($close, -1) - 1"],
+                },
+            },
+            "segments": {
+                "train": ("2008-01-01", "2014-12-31"),
+                "valid": ("2015-01-01", "2016-12-31"),
+                "test": ("2017-01-01", "2020-08-01"),
+            },
+        },
+    }
+
+    model_config = {
+        "class": "QuantTransformer",
+        "module_path": "trade_models",
+        "kwargs": {
+            "loss": "mse",
+            "GPU": "0",
+            "metric": "loss",
+        },
+    }
+
+    task = {"model": model_config, "dataset": dataset_config}
+
+    model = init_instance_by_config(model_config)
+    dataset = init_instance_by_config(dataset_config)
+
+    # start exp to train model
+    with R.start(experiment_name="train_tt_model"):
+        R.log_params(**flatten_dict(task))
+        model.fit(dataset)
+        R.save_objects(trained_model=model)
+        rid = R.get_recorder().id
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser("Vanilla Transformable Transformer")
+    parser.add_argument("--save_dir", type=str, default="./outputs/tt-ml-runs", help="The checkpoint directory.")
+    parser.add_argument("--market", type=str, default="csi300", help="The market indicator.")
+    args = parser.parse_args()
+
+    provider_uri = "~/.qlib/qlib_data/cn_data"  # target_dir
+    exp_manager = C.exp_manager
+    exp_manager["kwargs"]["uri"] = "file:{:}".format(Path(args.save_dir).resolve())
+    qlib.init(provider_uri=provider_uri, region=REG_CN, exp_manager=exp_manager)
+
+    main(args)
diff --git a/lib/layers/__init__.py b/lib/layers/__init__.py
index 21bca49..49b1db3 100644
--- a/lib/layers/__init__.py
+++ b/lib/layers/__init__.py
@@ -1,2 +1,4 @@
 from .drop import DropBlock2d, DropPath
 from .weight_init import trunc_normal_
+
+from .positional_embedding import PositionalEncoder
diff --git a/lib/layers/positional_embedding.py b/lib/layers/positional_embedding.py
new file mode 100644
index 0000000..78cdd44
--- /dev/null
+++ b/lib/layers/positional_embedding.py
@@ -0,0 +1,29 @@
+import torch
+import torch.nn as nn
+import math
+
+class PositionalEncoder(nn.Module):
+  # Attention Is All You Need: https://arxiv.org/pdf/1706.03762.pdf
+
+  def __init__(self, d_model, max_seq_len):
+    super(PositionalEncoder, self).__init__()
+    self.d_model = d_model
+    # create constant 'pe' matrix with values dependant on 
+    # pos and i
+    pe = torch.zeros(max_seq_len, d_model)
+    for pos in range(max_seq_len):
+      for i in range(0, d_model):
+        div = 10000 ** ((i // 2) * 2 / d_model)
+        value = pos / div
+        if i % 2 == 0:
+          pe[pos, i] = math.sin(value)
+        else:
+          pe[pos, i] = math.cos(value)
+    pe = pe.unsqueeze(0)
+    self.register_buffer('pe', pe)
+ 
+  
+  def forward(self, x):
+    batch, seq, fdim = x.shape[:3]
+    embeddings = self.pe[:, :seq, :fdim]
+    return x + embeddings
diff --git a/lib/trade_models/quant_transformer.py b/lib/trade_models/quant_transformer.py
index fb0c43c..a86dbbd 100755
--- a/lib/trade_models/quant_transformer.py
+++ b/lib/trade_models/quant_transformer.py
@@ -1,7 +1,6 @@
-# Copyright (c) Microsoft Corporation.
-# Licensed under the MIT License.
-
-
+##################################################
+# Copyright (c) Xuanyi Dong [GitHub D-X-Y], 2021 #
+##################################################
 from __future__ import division
 from __future__ import print_function
 
@@ -26,7 +25,7 @@ import torch
 import torch.nn as nn
 import torch.optim as optim
 
-from layers import DropPath, trunc_normal_
+import layers as xlayers
 
 from qlib.model.base import Model
 from qlib.data.dataset import DatasetH
@@ -182,7 +181,6 @@ class QuantTransformer(Model):
     losses = []
 
     indices = np.arange(len(x_values))
-    import pdb; pdb.set_trace()
 
     for i in range(len(indices))[:: self.batch_size]:
 
@@ -261,6 +259,7 @@ class QuantTransformer(Model):
       torch.cuda.empty_cache()
 
   def predict(self, dataset):
+
     if not self.fitted:
       raise ValueError("model is not fitted yet!")
 
@@ -294,9 +293,9 @@ class QuantTransformer(Model):
 # Real Model
 
 
-class Mlp(nn.Module):
+class MLP(nn.Module):
   def __init__(self, in_features, hidden_features=None, out_features=None, act_layer=nn.GELU, drop=0.):
-    super().__init__()
+    super(MLP, self).__init__()
     out_features = out_features or in_features
     hidden_features = hidden_features or in_features
     self.fc1 = nn.Linear(in_features, hidden_features)
@@ -314,8 +313,9 @@ class Mlp(nn.Module):
 
 
 class Attention(nn.Module):
+
   def __init__(self, dim, num_heads=8, qkv_bias=False, qk_scale=None, attn_drop=0., proj_drop=0.):
-    super().__init__()
+    super(Attention, self).__init__()
     self.num_heads = num_heads
     head_dim = dim // num_heads
     # NOTE scale factor was wrong in my original version, can set manually to be compat with prev weights
@@ -345,15 +345,15 @@ class Block(nn.Module):
 
   def __init__(self, dim, num_heads, mlp_ratio=4., qkv_bias=False, qk_scale=None, drop=0., attn_drop=0.,
          drop_path=0., act_layer=nn.GELU, norm_layer=nn.LayerNorm):
-    super().__init__()
+    super(Block, self).__init__()
     self.norm1 = norm_layer(dim)
     self.attn = Attention(
       dim, num_heads=num_heads, qkv_bias=qkv_bias, qk_scale=qk_scale, attn_drop=attn_drop, proj_drop=drop)
     # NOTE: drop path for stochastic depth, we shall see if this is better than dropout here
-    self.drop_path = DropPath(drop_path) if drop_path > 0. else nn.Identity()
+    self.drop_path = xlayers.DropPath(drop_path) if drop_path > 0. else nn.Identity()
     self.norm2 = norm_layer(dim)
     mlp_hidden_dim = int(dim * mlp_ratio)
-    self.mlp = Mlp(in_features=dim, hidden_features=mlp_hidden_dim, act_layer=act_layer, drop=drop)
+    self.mlp = MLP(in_features=dim, hidden_features=mlp_hidden_dim, act_layer=act_layer, drop=drop)
 
   def forward(self, x):
     x = x + self.drop_path(self.attn(self.norm1(x)))
@@ -365,19 +365,18 @@ class SimpleEmbed(nn.Module):
 
   def __init__(self, d_feat, embed_dim):
     super(SimpleEmbed, self).__init__()
+    self.d_feat = d_feat
     self.proj = nn.Linear(d_feat, embed_dim)
 
   def forward(self, x):
-    import pdb; pdb.set_trace()
-    B, C, H, W = x.shape
-    # FIXME look at relaxing size constraints
-    assert H == self.img_size[0] and W == self.img_size[1], \
-      f"Input image size ({H}*{W}) doesn't match model ({self.img_size[0]}*{self.img_size[1]})."
-    x = self.proj(x).flatten(2).transpose(1, 2)
-    return x
+    x = x.reshape(len(x), self.d_feat, -1)  # [N, F*T] -> [N, F, T]
+    x = x.permute(0, 2, 1)                  # [N, F, T] -> [N, T, F]
+    out = self.proj(x)
+    return out
 
 
 class TransformerModel(nn.Module):
+
   def __init__(self,
          d_feat: int,
          embed_dim: int = 64,
@@ -408,11 +407,9 @@ class TransformerModel(nn.Module):
 
     self.input_embed = SimpleEmbed(d_feat, embed_dim=embed_dim)
 
-    """
     self.cls_token = nn.Parameter(torch.zeros(1, 1, embed_dim))
-    self.pos_embed = nn.Parameter(torch.zeros(1, num_patches + 1, embed_dim))
+    self.pos_embed = xlayers.PositionalEncoder(d_model=embed_dim, max_seq_len=65)
     self.pos_drop = nn.Dropout(p=drop_rate)
-    """
 
     dpr = [x.item() for x in torch.linspace(0, drop_path_rate, depth)]  # stochastic depth decay rule
     self.blocks = nn.ModuleList([
@@ -425,15 +422,12 @@ class TransformerModel(nn.Module):
     # regression head
     self.head = nn.Linear(self.num_features, 1)
 
-    """
-    trunc_normal_(self.pos_embed, std=.02)
-    trunc_normal_(self.cls_token, std=.02)
-    """
+    xlayers.trunc_normal_(self.cls_token, std=.02)
     self.apply(self._init_weights)
 
   def _init_weights(self, m):
     if isinstance(m, nn.Linear):
-      trunc_normal_(m.weight, std=.02)
+      xlayers.trunc_normal_(m.weight, std=.02)
       if isinstance(m, nn.Linear) and m.bias is not None:
         nn.init.constant_(m.bias, 0)
     elif isinstance(m, nn.LayerNorm):
@@ -441,21 +435,22 @@ class TransformerModel(nn.Module):
       nn.init.constant_(m.weight, 1.0)
 
   def forward_features(self, x):
-    B = x.shape[0]
-    x = self.input_embed(x)
+    batch, flatten_size = x.shape
+    feats = self.input_embed(x)  # batch * 60 * 64
 
-    cls_tokens = self.cls_token.expand(B, -1, -1)  # stole cls_tokens impl from Phil Wang, thanks
-    x = torch.cat((cls_tokens, x), dim=1)
-    x = x + self.pos_embed
-    x = self.pos_drop(x)
+    cls_tokens = self.cls_token.expand(batch, -1, -1)  # stole cls_tokens impl from Phil Wang, thanks
+    feats_w_ct = torch.cat((cls_tokens, feats), dim=1)
+    feats_w_tp = self.pos_embed(feats_w_ct)
+    feats_w_tp = self.pos_drop(feats_w_tp)
 
-    for blk in self.blocks:
-      x = blk(x)
+    xfeats = feats_w_tp
+    for block in self.blocks:
+      xfeats = block(xfeats)
 
-    x = self.norm(x)[:, 0]
-    return x
+    xfeats = self.norm(xfeats)[:, 0]
+    return xfeats
 
   def forward(self, x):
-    x = self.forward_features(x)
-    x = self.head(x)
-    return x
+    feats = self.forward_features(x)
+    predicts = self.head(feats).squeeze(-1)
+    return predicts
diff --git a/notebooks/Q/workflow-demo.py b/notebooks/Q/workflow-demo.py
index 06fcd73..8492a7a 100644
--- a/notebooks/Q/workflow-demo.py
+++ b/notebooks/Q/workflow-demo.py
@@ -1,41 +1,75 @@
 import os
 import sys
-import qlib
+import ruamel.yaml as yaml
 import pprint
 import numpy as np
 import pandas as pd
+from pathlib import Path
 
+import qlib
 from qlib import config as qconfig
 from qlib.utils import init_instance_by_config
+from qlib.workflow import R
+from qlib.data.dataset import DatasetH
+from qlib.data.dataset.handler import DataHandlerLP
 
-qlib.init(provider_uri='~/.qlib/qlib_data/cn_data', region=qconfig.REG_CN)
+qlib.init(provider_uri="~/.qlib/qlib_data/cn_data", region=qconfig.REG_CN)
 
 dataset_config = {
-            "class": "DatasetH",
-            "module_path": "qlib.data.dataset",
+    "class": "DatasetH",
+    "module_path": "qlib.data.dataset",
+    "kwargs": {
+        "handler": {
+            "class": "Alpha360",
+            "module_path": "qlib.contrib.data.handler",
             "kwargs": {
-                "handler": {
-                    "class": "Alpha158",
-                    "module_path": "qlib.contrib.data.handler",
-                    "kwargs": {
-                        "start_time": "2008-01-01",
-                        "end_time": "2020-08-01",
-                        "fit_start_time": "2008-01-01",
-                        "fit_end_time": "2014-12-31",
-                        "instruments": "csi300",
-                    },
-                },
-                "segments": {
-                    "train": ("2008-01-01", "2014-12-31"),
-                    "valid": ("2015-01-01", "2016-12-31"),
-                    "test": ("2017-01-01", "2020-08-01"),
-                },
+                "start_time": "2008-01-01",
+                "end_time": "2020-08-01",
+                "fit_start_time": "2008-01-01",
+                "fit_end_time": "2014-12-31",
+                "instruments": "csi300",
+                "infer_processors": [
+                    {"class": "RobustZScoreNorm", "kwargs": {"fields_group": "feature", "clip_outlier": True}},
+                    {"class": "Fillna", "kwargs": {"fields_group": "feature"}},
+                ],
+                "learn_processors": [
+                    {"class": "DropnaLabel"},
+                    {"class": "CSRankNorm", "kwargs": {"fields_group": "label"}},
+                ],
+               "label": ["Ref($close, -2) / Ref($close, -1) - 1"]
             },
-        }
+        },
+        "segments": {
+            "train": ("2008-01-01", "2014-12-31"),
+            "valid": ("2015-01-01", "2016-12-31"),
+            "test": ("2017-01-01", "2020-08-01"),
+        },
+    },
+}
 
 if __name__ == "__main__":
-  dataset = init_instance_by_config(dataset_config)
-  pprint.pprint(dataset_config)
-  pprint.pprint(dataset)
-  import pdb; pdb.set_trace()
-  print('Complete')
+
+    qlib_root_dir = (Path(__file__).parent / '..' / '..' / '.latent-data' / 'qlib').resolve()
+    demo_yaml_path = qlib_root_dir / 'examples' / 'benchmarks' / 'GRU' / 'workflow_config_gru_Alpha360.yaml'
+    print('Demo-workflow-yaml: {:}'.format(demo_yaml_path))
+    with open(demo_yaml_path, 'r') as fp:
+      config = yaml.safe_load(fp)
+    pprint.pprint(config['task']['dataset'])
+    
+    dataset = init_instance_by_config(dataset_config)
+    pprint.pprint(dataset_config)
+    pprint.pprint(dataset)
+
+    df_train, df_valid, df_test = dataset.prepare(
+        ["train", "valid", "test"],
+        col_set=["feature", "label"],
+        data_key=DataHandlerLP.DK_L,
+    )
+
+    x_train, y_train = df_train["feature"], df_train["label"]
+
+    import pdb
+
+    pdb.set_trace()
+    print("Complete")
+