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Fix comment typo (#987)

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Chauncey
2022-03-17 19:25:15 +08:00
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parent 705354cc28
commit f2a5ecd98a
1 changed files with 6 additions and 6 deletions
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12
qlib/data/base.py
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@@ -136,14 +136,14 @@ class Expression(abc.ABC):
"""load feature
This function is responsible for loading feature/expression based on the expression engine.
The concerate implementation will be seperated by two parts
The concrete implementation will be separated into two parts:
1) caching data, handle errors.
- This part is shared by all the expressions and implemented in Expression
2) processing and calculating data based on the specific expression.
- This part is different in each expression and implemented in each expression
Expresion Engine is shared by different data.
Different data will have different extra infomation for `args`.
Expression Engine is shared by different data.
Different data will have different extra information for `args`.
Parameters
----------
@@ -154,9 +154,9 @@ class Expression(abc.ABC):
end_index : str
feature end index [in calendar].
*args may contains following information;
1) if it is used in basic experssion engine data, it contains following arguments
freq : str
*args may contain following information:
1) if it is used in basic expression engine data, it contains following arguments
freq: str
feature frequency.
2) if is used in PIT data, it contains following arguments