def _get_combined_forecast(system, instrument_code, this_stage ):
forecast_weights=this_stage.get_forecast_weights(instrument_code)
rule_variation_list=list(forecast_weights.columns)
forecasts=[this_stage.get_capped_forecast(instrument_code, rule_variation_name) for rule_variation_name in rule_variation_list]
forecast_div_multiplier=this_stage.get_forecast_diversification_multiplier(instrument_code)
forecast_cap=this_stage.get_forecast_cap()
forecasts=pd.concat(forecasts, axis=1)
## multiply weights by forecasts
combined_forecast=multiply_df(forecast_weights, forecasts)
## sum
combined_forecast=combined_forecast.sum(axis=1).to_frame("comb_forecast")
## apply fdm
## (note in this simple version we aren't adjusting FDM if forecast_weights change)
forecast_div_multiplier=forecast_div_multiplier.reindex(forecasts.index, method="ffill")
raw_combined_forecast=multiply_df(combined_forecast,forecast_div_multiplier)
combined_forecast=apply_cap(raw_combined_forecast, forecast_cap)
return combined_forecast
def _get_combined_forecast(system, instrument_code, this_stage):
print(__file__ + ":" + str(inspect.getframeinfo(inspect.currentframe())[:3][1]) + ":" +"Calculating combined forecast for %s" % (instrument_code))
forecast_weights = this_stage.get_forecast_weights(instrument_code)
rule_variation_list = list(forecast_weights.columns)
forecasts = this_stage.get_all_forecasts(instrument_code, rule_variation_list)
forecast_div_multiplier = this_stage.get_forecast_diversification_multiplier(
instrument_code)
forecast_cap = this_stage.get_forecast_cap()
# multiply weights by forecasts
#NOT NEEDED: (forecast_weights, forecasts) = forecast_weights.align(forecasts, join="right")
combined_forecast = forecast_weights.ffill()* forecasts
# sum
combined_forecast = combined_forecast.sum(
axis=1)
# apply fdm
# (note in this simple version we aren't adjusting FDM if forecast_weights change)
raw_combined_forecast = combined_forecast * forecast_div_multiplier.ffill()
combined_forecast = apply_cap(raw_combined_forecast, forecast_cap)
return combined_forecast
def _get_combined_forecast(system, instrument_code, this_stage):
this_stage.log.msg("Calculating combined forecast for %s" % (instrument_code),
instrument_code=instrument_code)
forecast_weights = this_stage.get_forecast_weights(instrument_code)
rule_variation_list = list(forecast_weights.columns)
forecasts = this_stage.get_all_forecasts(instrument_code, rule_variation_list)
forecast_div_multiplier = this_stage.get_forecast_diversification_multiplier(
instrument_code)
forecast_cap = this_stage.get_forecast_cap()
# multiply weights by forecasts
combined_forecast = multiply_df(forecast_weights, forecasts)
# sum
combined_forecast = combined_forecast.sum(
axis=1).to_frame("comb_forecast")
# apply fdm
# (note in this simple version we aren't adjusting FDM if forecast_weights change)
forecast_div_multiplier = forecast_div_multiplier.reindex(
forecasts.index, method="ffill")
raw_combined_forecast = multiply_df(
combined_forecast, forecast_div_multiplier)
combined_forecast = apply_cap(raw_combined_forecast, forecast_cap)
return combined_forecast
def _get_combined_forecast(system, instrument_code, this_stage):
this_stage.log.msg("Calculating combined forecast for %s" %
(instrument_code),
instrument_code=instrument_code)
forecast_weights = this_stage.get_forecast_weights(instrument_code)
rule_variation_list = list(forecast_weights.columns)
forecasts = this_stage.get_all_forecasts(instrument_code,
rule_variation_list)
forecast_div_multiplier = this_stage.get_forecast_diversification_multiplier(
instrument_code)
forecast_cap = this_stage.get_forecast_cap()
# multiply weights by forecasts
# NOT NEEDED: (forecast_weights, forecasts) =
# forecast_weights.align(forecasts, join="right")
combined_forecast = forecast_weights.ffill() * forecasts
# sum
combined_forecast = combined_forecast.sum(axis=1)
# apply fdm
# (note in this simple version we aren't adjusting FDM if forecast_weights change)
raw_combined_forecast = combined_forecast * forecast_div_multiplier.ffill(
)
combined_forecast = apply_cap(raw_combined_forecast, forecast_cap)
return combined_forecast
def get_combined_forecast(self, instrument_code):
"""
Get a combined forecast, linear combination of individual forecasts with FDM applied
We forward fill all forecasts. We then adjust forecast weights so that they are 1.0 in every
period; after setting to zero when no forecast is available. Finally we multiply up, and
apply the FDM. Then we cap.
:param instrument_code:
:type str:
:returns: Tx1 pd.DataFrame
KEY OUTPUT
>>> from systems.tests.testdata import get_test_object_futures_with_rules_and_capping
>>> from systems.basesystem import System
>>> (fcs, rules, rawdata, data, config)=get_test_object_futures_with_rules_and_capping()
>>> system=System([rawdata, rules, fcs, ForecastCombineFixed()], data, config)
>>>
>>> system.combForecast.get_combined_forecast("EDOLLAR").tail(2)
comb_forecast
2015-12-10 1.619134
2015-12-11 2.462610
>>>
>>> config.forecast_div_multiplier=1000.0
>>> system2=System([rawdata, rules, fcs, ForecastCombineFixed()], data, config)
>>> system2.combForecast.get_combined_forecast("EDOLLAR").tail(2)
comb_forecast
2015-12-10 21
2015-12-11 21
"""
self.log.msg("Calculating combined forecast for %s" % (instrument_code),
instrument_code=instrument_code)
forecast_weights = self.get_forecast_weights(instrument_code)
rule_variation_list = list(forecast_weights.columns)
forecasts = self.get_all_forecasts(
instrument_code, rule_variation_list)
forecast_div_multiplier = self.get_forecast_diversification_multiplier(
instrument_code)
forecast_cap = self.get_forecast_cap()
combined_forecast = forecast_weights.ffill() * forecasts
# sum
combined_forecast = combined_forecast.sum(
axis=1)
# apply fdm
# (note in this simple version we aren't adjusting FDM if forecast_weights change)
raw_combined_forecast = combined_forecast * forecast_div_multiplier.ffill()
combined_forecast = apply_cap(raw_combined_forecast, forecast_cap)
return combined_forecast
def _get_capped_forecast(
system, instrument_code, rule_variation_name, this_stage):
scaled_forecast = this_stage.get_scaled_forecast(
instrument_code, rule_variation_name)
cap = this_stage.get_forecast_cap()
capped_forecast = apply_cap(scaled_forecast, cap)
capped_forecast.columns = scaled_forecast.columns
return capped_forecast
def _get_capped_forecast(
system, instrument_code, rule_variation_name, this_stage):
print(__file__ + ":" + str(inspect.getframeinfo(inspect.currentframe())[:3][1]) + ":" +"Calculating capped forecast for %s %s" % (instrument_code, rule_variation_name))
scaled_forecast = this_stage.get_scaled_forecast(
instrument_code, rule_variation_name)
cap = this_stage.get_forecast_cap()
capped_forecast = apply_cap(scaled_forecast, cap)
return capped_forecast
def _get_capped_forecast(
system, instrument_code, rule_variation_name, this_stage):
this_stage.log.msg("Calculating capped forecast for %s %s" % (instrument_code, rule_variation_name),
instrument_code=instrument_code, rule_variation_name=rule_variation_name)
scaled_forecast = this_stage.get_scaled_forecast(
instrument_code, rule_variation_name)
cap = this_stage.get_forecast_cap()
capped_forecast = apply_cap(scaled_forecast, cap)
return capped_forecast
def _get_capped_forecast(system, instrument_code, rule_variation_name,
this_stage):
print(__file__ + ":" +
str(inspect.getframeinfo(inspect.currentframe())[:3][1]) +
":" + "Calculating capped forecast for %s %s" %
(instrument_code, rule_variation_name))
scaled_forecast = this_stage.get_scaled_forecast(
instrument_code, rule_variation_name)
cap = this_stage.get_forecast_cap()
capped_forecast = apply_cap(scaled_forecast, cap)
return capped_forecast
def _get_capped_forecast(system, instrument_code, rule_variation_name,
this_stage):
this_stage.log.msg("Calculating capped forecast for %s %s" %
(instrument_code, rule_variation_name),
instrument_code=instrument_code,
rule_variation_name=rule_variation_name)
scaled_forecast = this_stage.get_scaled_forecast(
instrument_code, rule_variation_name)
cap = this_stage.get_forecast_cap()
capped_forecast = apply_cap(scaled_forecast, cap)
return capped_forecast
def get_capped_forecast(self, instrument_code, rule_variation_name):
"""
Return the capped, scaled, forecast
KEY OUTPUT
:param instrument_code:
:type str:
:param rule_variation_name:
:type str: name of the trading rule variation
:returns: Tx1 pd.DataFrame, same size as forecast
>>> from systems.tests.testdata import get_test_object_futures_with_rules
>>> from systems.basesystem import System
>>> (rules, rawdata, data, config)=get_test_object_futures_with_rules()
>>> config.forecast_cap=0.2
>>> system=System([rawdata, rules, ForecastScaleCapFixed()], data, config)
>>> system.forecastScaleCap.get_capped_forecast("EDOLLAR", "ewmac8").tail(2)
ewmac8
2015-12-10 -0.190583
2015-12-11 0.200000
"""
self.log.msg(
"Calculating capped forecast for %s %s" % (instrument_code,
rule_variation_name),
instrument_code=instrument_code,
rule_variation_name=rule_variation_name)
scaled_forecast = self.get_scaled_forecast(instrument_code,
rule_variation_name)
cap = self.get_forecast_cap()
capped_forecast = apply_cap(scaled_forecast, cap)
return capped_forecast
def get_capped_forecast(self, instrument_code, rule_variation_name):
"""
Return the capped, scaled, forecast
KEY OUTPUT
:param instrument_code:
:type str:
:param rule_variation_name:
:type str: name of the trading rule variation
:returns: Tx1 pd.DataFrame, same size as forecast
>>> from systems.tests.testdata import get_test_object_futures_with_rules
>>> from systems.basesystem import System
>>> (rules, rawdata, data, config)=get_test_object_futures_with_rules()
>>> config.forecast_cap=0.2
>>> system=System([rawdata, rules, ForecastScaleCapFixed()], data, config)
>>> system.forecastScaleCap.get_capped_forecast("EDOLLAR", "ewmac8").tail(2)
ewmac8
2015-12-10 -0.190583
2015-12-11 0.200000
"""
self.log.msg("Calculating capped forecast for %s %s" %
(instrument_code, rule_variation_name),
instrument_code=instrument_code,
rule_variation_name=rule_variation_name)
scaled_forecast = self.get_scaled_forecast(instrument_code,
rule_variation_name)
cap = self.get_forecast_cap()
capped_forecast = apply_cap(scaled_forecast, cap)
return capped_forecast
def _cap_forecast(self, raw_multiplied_combined_forecast):
forecast_cap = self.get_forecast_cap()
combined_forecast = apply_cap(raw_multiplied_combined_forecast,
forecast_cap)
return combined_forecast
