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Adjust rolling api (#1594)

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* Intermediate version

* Fix yaml template & Successfully run rolling

* Be compatible with benchmark

* Get same results with previous linear model

* Black formatting

* Update black

* Update the placeholder mechanism

* Update CI

* Update CI

* Upgrade Black

* Fix CI and simplify code

* Fix CI

* Move the data processing caching mechanism into utils.

* Adjusting DDG-DA

* Organize import
This commit is contained in:
you-n-g
2023-07-14 12:16:12 +08:00
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parent 8d3adf34ac
commit be4646b4b7
148 changed files with 1035 additions and 1028 deletions
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307
examples/benchmarks_dynamic/DDG-DA/workflow.py
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@@ -1,305 +1,40 @@
# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.
from pathlib import Path
from qlib.model.meta.task import MetaTask
from qlib.contrib.meta.data_selection.model import MetaModelDS
from qlib.contrib.meta.data_selection.dataset import InternalData, MetaDatasetDS
from qlib.data.dataset.handler import DataHandlerLP
from typing import Union
import pandas as pd
import fire
import sys
import pickle
from typing import Optional
from qlib import auto_init
from qlib.model.trainer import TrainerR
from qlib.typehint import Literal
from qlib.utils import init_instance_by_config
from qlib.workflow import R
from qlib.contrib.rolling.ddgda import DDGDA
from qlib.tests.data import GetData
DIRNAME = Path(__file__).absolute().resolve().parent
sys.path.append(str(DIRNAME.parent / "baseline"))
from rolling_benchmark import RollingBenchmark # NOTE: sys.path is changed for import RollingBenchmark
BENCH_DIR = DIRNAME.parent / "baseline"
class DDGDA:
"""
please run `python workflow.py run_all` to run the full workflow of the experiment
class DDGDABench(DDGDA):
# The config in the README.md
CONF_LIST = [
BENCH_DIR / "workflow_config_linear_Alpha158.yaml",
BENCH_DIR / "workflow_config_lightgbm_Alpha158.yaml",
]
**NOTE**
before running the example, please clean your previous results with following command
- `rm -r mlruns`
"""
DEFAULT_CONF = CONF_LIST[0] # Linear by default due to efficiency
def __init__(
self,
sim_task_model: Literal["linear", "gbdt"] = "gbdt",
forecast_model: Literal["linear", "gbdt"] = "linear",
h_path: Optional[str] = None,
test_end: Optional[str] = None,
train_start: Optional[str] = None,
meta_1st_train_end: Optional[str] = None,
task_ext_conf: Optional[dict] = None,
alpha: float = 0.01,
proxy_hd: str = "handler_proxy.pkl",
):
"""
def __init__(self, conf_path: Union[str, Path] = DEFAULT_CONF, horizon=20, **kwargs) -> None:
# This code is for being compatible with the previous old code
conf_path = Path(conf_path)
super().__init__(conf_path=conf_path, horizon=horizon, working_dir=DIRNAME, **kwargs)
Parameters
----------
train_start: Optional[str]
the start datetime for data. It is used in training start time (for both tasks & meta learing)
test_end: Optional[str]
the end datetime for data. It is used in test end time
meta_1st_train_end: Optional[str]
the datetime of training end of the first meta_task
alpha: float
Setting the L2 regularization for ridge
The `alpha` is only passed to MetaModelDS (it is not passed to sim_task_model currently..)
"""
self.step = 20
# NOTE:
# the horizon must match the meaning in the base task template
self.horizon = 20
self.meta_exp_name = "DDG-DA"
self.sim_task_model = sim_task_model # The model to capture the distribution of data.
self.forecast_model = forecast_model # downstream forecasting models' type
self.rb_kwargs = {
"h_path": h_path,
"test_end": test_end,
"train_start": train_start,
"task_ext_conf": task_ext_conf,
}
self.alpha = alpha
self.meta_1st_train_end = meta_1st_train_end
self.proxy_hd = proxy_hd
def get_feature_importance(self):
# this must be lightGBM, because it needs to get the feature importance
rb = RollingBenchmark(model_type="gbdt", **self.rb_kwargs)
task = rb.basic_task()
with R.start(experiment_name="feature_importance"):
model = init_instance_by_config(task["model"])
dataset = init_instance_by_config(task["dataset"])
model.fit(dataset)
fi = model.get_feature_importance()
# Because the model use numpy instead of dataframe for training lightgbm
# So the we must use following extra steps to get the right feature importance
df = dataset.prepare(segments=slice(None), col_set="feature", data_key=DataHandlerLP.DK_R)
cols = df.columns
fi_named = {cols[int(k.split("_")[1])]: imp for k, imp in fi.to_dict().items()}
return pd.Series(fi_named)
def dump_data_for_proxy_model(self):
"""
Dump data for training meta model.
The meta model will be trained upon the proxy forecasting model.
This dataset is for the proxy forecasting model.
"""
topk = 30
fi = self.get_feature_importance()
col_selected = fi.nlargest(topk)
rb = RollingBenchmark(model_type=self.sim_task_model, **self.rb_kwargs)
task = rb.basic_task()
dataset = init_instance_by_config(task["dataset"])
prep_ds = dataset.prepare(slice(None), col_set=["feature", "label"], data_key=DataHandlerLP.DK_L)
feature_df = prep_ds["feature"]
label_df = prep_ds["label"]
feature_selected = feature_df.loc[:, col_selected.index]
feature_selected = feature_selected.groupby("datetime", group_keys=False).apply(
lambda df: (df - df.mean()).div(df.std())
)
feature_selected = feature_selected.fillna(0.0)
df_all = {
"label": label_df.reindex(feature_selected.index),
"feature": feature_selected,
}
df_all = pd.concat(df_all, axis=1)
df_all.to_pickle(DIRNAME / "fea_label_df.pkl")
# dump data in handler format for aligning the interface
handler = DataHandlerLP(
data_loader={
"class": "qlib.data.dataset.loader.StaticDataLoader",
"kwargs": {"config": DIRNAME / "fea_label_df.pkl"},
}
)
handler.to_pickle(DIRNAME / self.proxy_hd, dump_all=True)
@property
def _internal_data_path(self):
return DIRNAME / f"internal_data_s{self.step}.pkl"
def dump_meta_ipt(self):
"""
Dump data for training meta model.
This function will dump the input data for meta model
"""
# According to the experiments, the choice of the model type is very important for achieving good results
rb = RollingBenchmark(model_type=self.sim_task_model, **self.rb_kwargs)
sim_task = rb.basic_task()
if self.sim_task_model == "gbdt":
sim_task["model"].setdefault("kwargs", {}).update({"early_stopping_rounds": None, "num_boost_round": 150})
exp_name_sim = f"data_sim_s{self.step}"
internal_data = InternalData(sim_task, self.step, exp_name=exp_name_sim)
internal_data.setup(trainer=TrainerR)
with self._internal_data_path.open("wb") as f:
pickle.dump(internal_data, f)
def train_meta_model(self, fill_method="max"):
"""
training a meta model based on a simplified linear proxy model;
"""
# 1) leverage the simplified proxy forecasting model to train meta model.
# - Only the dataset part is important, in current version of meta model will integrate the
rb = RollingBenchmark(model_type=self.sim_task_model, **self.rb_kwargs)
sim_task = rb.basic_task()
# the train_start for training meta model does not necessarily align with final rolling
train_start = "2008-01-01" if self.rb_kwargs.get("train_start") is None else self.rb_kwargs.get("train_start")
train_end = "2010-12-31" if self.meta_1st_train_end is None else self.meta_1st_train_end
test_start = (pd.Timestamp(train_end) + pd.Timedelta(days=1)).strftime("%Y-%m-%d")
proxy_forecast_model_task = {
# "model": "qlib.contrib.model.linear.LinearModel",
"dataset": {
"class": "qlib.data.dataset.DatasetH",
"kwargs": {
"handler": f"file://{(DIRNAME / self.proxy_hd).absolute()}",
"segments": {
"train": (train_start, train_end),
"test": (test_start, sim_task["dataset"]["kwargs"]["segments"]["test"][1]),
},
},
},
# "record": ["qlib.workflow.record_temp.SignalRecord"]
}
# the proxy_forecast_model_task will be used to create meta tasks.
# The test date of first task will be 2011-01-01. Each test segment will be about 20days
# The tasks include all training tasks and test tasks.
# 2) preparing meta dataset
kwargs = dict(
task_tpl=proxy_forecast_model_task,
step=self.step,
segments=0.62, # keep test period consistent with the dataset yaml
trunc_days=1 + self.horizon,
hist_step_n=30,
fill_method=fill_method,
rolling_ext_days=0,
)
# NOTE:
# the input of meta model (internal data) are shared between proxy model and final forecasting model
# but their task test segment are not aligned! It worked in my previous experiment.
# So the misalignment will not affect the effectiveness of the method.
with self._internal_data_path.open("rb") as f:
internal_data = pickle.load(f)
md = MetaDatasetDS(exp_name=internal_data, **kwargs)
# 3) train and logging meta model
with R.start(experiment_name=self.meta_exp_name):
R.log_params(**kwargs)
mm = MetaModelDS(
step=self.step, hist_step_n=kwargs["hist_step_n"], lr=0.001, max_epoch=30, seed=43, alpha=self.alpha
)
mm.fit(md)
R.save_objects(model=mm)
@property
def _task_path(self):
return DIRNAME / f"tasks_s{self.step}.pkl"
def meta_inference(self):
"""
Leverage meta-model for inference:
- Given
- baseline tasks
- input for meta model(internal data)
- meta model (its learnt knowledge on proxy forecasting model is expected to transfer to normal forecasting model)
"""
# 1) get meta model
exp = R.get_exp(experiment_name=self.meta_exp_name)
rec = exp.list_recorders(rtype=exp.RT_L)[0]
meta_model: MetaModelDS = rec.load_object("model")
# 2)
# we are transfer to knowledge of meta model to final forecasting tasks.
# Create MetaTaskDataset for the final forecasting tasks
# Aligning the setting of it to the MetaTaskDataset when training Meta model is necessary
# 2.1) get previous config
param = rec.list_params()
trunc_days = int(param["trunc_days"])
step = int(param["step"])
hist_step_n = int(param["hist_step_n"])
fill_method = param.get("fill_method", "max")
rb = RollingBenchmark(model_type=self.forecast_model, **self.rb_kwargs)
task_l = rb.create_rolling_tasks()
# 2.2) create meta dataset for final dataset
kwargs = dict(
task_tpl=task_l,
step=step,
segments=0.0, # all the tasks are for testing
trunc_days=trunc_days,
hist_step_n=hist_step_n,
fill_method=fill_method,
task_mode=MetaTask.PROC_MODE_TRANSFER,
)
with self._internal_data_path.open("rb") as f:
internal_data = pickle.load(f)
mds = MetaDatasetDS(exp_name=internal_data, **kwargs)
# 3) meta model make inference and get new qlib task
new_tasks = meta_model.inference(mds)
with self._task_path.open("wb") as f:
pickle.dump(new_tasks, f)
def train_and_eval_tasks(self):
"""
Training the tasks generated by meta model
Then evaluate it
"""
with self._task_path.open("rb") as f:
tasks = pickle.load(f)
rb = RollingBenchmark(rolling_exp="rolling_ds", model_type=self.forecast_model, **self.rb_kwargs)
rb.train_rolling_tasks(tasks)
rb.ens_rolling()
rb.update_rolling_rec()
def run_all(self):
# 1) file: handler_proxy.pkl (self.proxy_hd)
self.dump_data_for_proxy_model()
# 2)
# file: internal_data_s20.pkl
# mlflow: data_sim_s20, models for calculating meta_ipt
self.dump_meta_ipt()
# 3) meta model will be stored in `DDG-DA`
self.train_meta_model()
# 4) new_tasks are saved in "tasks_s20.pkl" (reweighter is added)
self.meta_inference()
# 5) load the saved tasks and train model
self.train_and_eval_tasks()
for f in self.CONF_LIST:
if conf_path.samefile(f):
break
else:
self.logger.warning("Model type is not in the benchmark!")
if __name__ == "__main__":
GetData().qlib_data(exists_skip=True)
auto_init()
fire.Fire(DDGDA)
fire.Fire(DDGDABench)