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npdl/activations.py

Summary

Maintainability
D
1 day
Test Coverage

File activations.py has 357 lines of code (exceeds 250 allowed). Consider refactoring.
Open

# -*- coding: utf-8 -*-

"""
Non-linear activation functions for artificial neurons.
Severity: Minor
Found in npdl/activations.py - About 4 hrs to fix

    Function get has a Cognitive Complexity of 21 (exceeds 5 allowed). Consider refactoring.
    Open

    def get(activation):
    if activation.__class__.__name__ == 'str':
        if activation in ['sigmoid', 'Sigmoid']:
            return Sigmoid()
        if activation in ['tan', 'tanh', 'Tanh']:
    Severity: Minor
    Found in npdl/activations.py - About 2 hrs to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Avoid too many return statements within this function.
    Open

            return copy.deepcopy(activation)
    Severity: Major
    Found in npdl/activations.py - About 30 mins to fix

      Avoid too many return statements within this function.
      Open

                  return Softmax()
      Severity: Major
      Found in npdl/activations.py - About 30 mins to fix

        Avoid too many return statements within this function.
        Open

                    return SymmetricElliot()
        Severity: Major
        Found in npdl/activations.py - About 30 mins to fix

          Avoid too many return statements within this function.
          Open

                      return Elliot()
          Severity: Major
          Found in npdl/activations.py - About 30 mins to fix

            Avoid too many return statements within this function.
            Open

                        return SoftSign()
            Severity: Major
            Found in npdl/activations.py - About 30 mins to fix

              Avoid too many return statements within this function.
              Open

                          return SoftPlus()
              Severity: Major
              Found in npdl/activations.py - About 30 mins to fix

                Similar blocks of code found in 2 locations. Consider refactoring.
                Open

                    def derivative(self, input=None):
        """Backward propagation.

        Returns
        -------
                Severity: Major
                Found in npdl/activations.py and 1 other location - About 1 hr to fix
                npdl/activations.py on lines 248..258

                Duplicated Code

                Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                Tuning

                This issue has a mass of 42.

                We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                Refactorings

                Further Reading

                Similar blocks of code found in 2 locations. Consider refactoring.
                Open

                    def derivative(self, input=None):
        """Backward propagation.
        The backward also return identity matrix.

        Returns
                Severity: Major
                Found in npdl/activations.py and 1 other location - About 1 hr to fix
                npdl/activations.py on lines 295..304

                Duplicated Code

                Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                Tuning

                This issue has a mass of 42.

                We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                Refactorings

                Further Reading

                Identical blocks of code found in 2 locations. Consider refactoring.
                Open

                        last_forward = 1 + np.abs(input * self.steepness) if input else self.last_forward
                Severity: Minor
                Found in npdl/activations.py and 1 other location - About 35 mins to fix
                npdl/activations.py on lines 353..353

                Duplicated Code

                Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                Tuning

                This issue has a mass of 33.

                We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                Refactorings

                Further Reading

                Identical blocks of code found in 2 locations. Consider refactoring.
                Open

                        last_forward = 1 + np.abs(input * self.steepness) if input else self.last_forward
                Severity: Minor
                Found in npdl/activations.py and 1 other location - About 35 mins to fix
                npdl/activations.py on lines 394..394

                Duplicated Code

                Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                Tuning

                This issue has a mass of 33.

                We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                Refactorings

                Further Reading

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