Natural Logarithm Function

The natural logarithm function is one of the commonly used mathematical functions in quantitative trading, used to calculate the logarithm with base e.

Calculation Principle

The natural logarithm function is calculated using the following formula:

y = ln(x) = log_e(x)

Where:

• x: Input value (range: 0 to +∞)
• y: Natural logarithm value (range: -∞ to +∞)

Parameter Description

• Input Parameters: One K-line data series
• Output: Series of natural logarithm values

Usage Recommendations

1. Pay attention to input value range (must be greater than 0)
2. Consider numerical precision
3. Pay attention to result interpretation
4. Consider logarithmic characteristics
5. Pay attention to boundary value handling
6. Consider practical application scenarios

Notes

• Ensure data quality
• Pay attention to data preprocessing
• Consider the impact of extreme values
• Pay attention to numerical range limitations
• Consider result stability
• Pay attention to computational efficiency
• Pay attention to practical application scenarios
• Pay attention to boundary value handling
• Consider result interpretation