ONLINE = "online"
TARGET = "target"
BOTH = "both"
NONE = "none"
LOCAL = "local"
GLOBAL = "global"
DAPU = "dapu"
DYNAMIC_DAPU = "dynamic_dapu"
EMA = "ema"
DYNAMIC_EMA_ONLINE = "dynamic_ema_online"
SELECTIVE_EMA = "selective_ema"