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Fix bug in beta value computation #8466

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Description

This PR fixes a bug in the beta calculation logic. It ensures that the beta value is calculated correctly by processing data only when enough pairs of different symbols with the same date are available. Additionally, it now processes when at least "period + 1" correct pairs are available. The beta value is "fill-forwarded" until a valid pair is found, at which point it recalculates the beta.

Related Issue

Closes #8460

Motivation and Context

This change is required to ensure that the beta calculation logic works correctly and efficiently,

Requires Documentation Change

No documentation change required.

How Has This Been Tested?

It has been tested both in the cloud and locally. Additionally, a unit test has been added to ensure the correct functionality of the beta calculation. The test verifies that the logic correctly handles symbol pairs, computes the beta value, and processes the data only when enough valid pairs are available.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • Refactor (non-breaking change which improves implementation)
  • Performance (non-breaking change which improves performance. Please add associated performance test and results)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Non-functional change (xml comments/documentation/etc)

Checklist:

  • My code follows the code style of this project.
  • I have read the CONTRIBUTING document.
  • I have added tests to cover my changes.
  • All new and existing tests passed.
  • My branch follows the naming convention bug-<issue#>-<description> or feature-<issue#>-<description>

- Beta is fill-forwarded
- A correct pair considered when they have different symbols and the
  same date
- Processing occurs when there are at least period+1 correct pairs
@JosueNina JosueNina force-pushed the bug-8460-beta-indicator-stuck-at-zero branch from 1d09f84 to bbb4ec0 Compare December 13, 2024 21:48
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Successfully merging this pull request may close these issues.

Beta Indicator Can Get Stuck at Zero
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