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

    def reproduce_from(p1, p2, mutation_rv, recombination_rv)
      # make copies of p1 and p2
      # (we're only interested in the :genotype key)
      c1 = { genotype: p1[:genotype].dup }
      c2 = { genotype: p2[:genotype].dup }
Severity: Major
Found in lib/mhl/integer_vector_genotype_space.rb and 1 other location - About 1 hr to fix
lib/mhl/real_vector_genotype_space.rb on lines 44..62

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 50.

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

      init_pos = if @start_positions
        # start positions have the highest priority
        @start_positions
      elsif @random_position_func
        # random_position_func has the second highest priority
Severity: Minor
Found in lib/mhl/particle_swarm_optimization_solver.rb and 1 other location - About 55 mins to fix
lib/mhl/quantum_particle_swarm_optimization_solver.rb on lines 57..77

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 44.

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

      init_pos = if @start_positions
        # start positions have the highest priority
        @start_positions
      elsif @random_position_func
        # random_position_func has the second highest priority
Severity: Minor
Found in lib/mhl/quantum_particle_swarm_optimization_solver.rb and 1 other location - About 55 mins to fix
lib/mhl/particle_swarm_optimization_solver.rb on lines 53..73

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 44.

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

Method bitflip_mutation has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
Open

      def bitflip_mutation(bitstring, mutation_rv)
        # TODO: disable this check in non-debugging mode
        unless bitstring.length == @bitstring_length
          raise 'Error! Different bit string sizes!'
        end
Severity: Minor
Found in lib/mhl/bitstring_genotype_space.rb - About 45 mins 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

Method initialize has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

    def initialize(opts)
      @population_size = opts[:population_size].to_i
      unless @population_size and @population_size.even?
        raise ArgumentError, 'Even population size required!'
      end
Severity: Minor
Found in lib/mhl/grey_wolf_solver.rb - About 35 mins 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

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

            min = @constraints[:min]
            max = @constraints[:max]
            # randomization is independent along each dimension
            p.zip(min,max).map do |p_i,min_i,max_i|
              min_vel = min_i - p_i
Severity: Minor
Found in lib/mhl/multiswarm_qpso_solver.rb and 1 other location - About 30 mins to fix
lib/mhl/particle_swarm_optimization_solver.rb on lines 87..93

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

          min = @constraints[:min]
          max = @constraints[:max]
          # randomization is independent along each dimension
          p.zip(min,max).map do |p_i,min_i,max_i|
            min_vel = min_i - p_i
Severity: Minor
Found in lib/mhl/particle_swarm_optimization_solver.rb and 1 other location - About 30 mins to fix
lib/mhl/multiswarm_qpso_solver.rb on lines 121..127

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

Method initialize has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def initialize(opts, logger)
      @random_func = opts[:random_func]

      @dimensions = opts[:dimensions].to_i
      unless @dimensions and @dimensions > 0
Severity: Minor
Found in lib/mhl/real_vector_genotype_space.rb - About 25 mins 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

Method initialize has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def initialize(opts={})
      @swarm_size = opts[:swarm_size].try(:to_i) || DEFAULT_SWARM_SIZE

      @num_swarms = opts[:num_swarms].to_i
      unless @num_swarms
Severity: Minor
Found in lib/mhl/multiswarm_qpso_solver.rb - About 25 mins 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

Method initialize has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def initialize(size:, initial_positions:, initial_velocities:, 
                   c1: nil, c2: nil, chi: nil, constraints: nil, logger: nil)
      @size      = size
      @particles = Array.new(@size) do |index|
        Particle.new(initial_positions[index], initial_velocities[index])
Severity: Minor
Found in lib/mhl/pso_swarm.rb - About 25 mins 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

Method initialize has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def initialize(opts)
      @bitstring_length = opts[:bitstring_length].to_i
      @mutation_threshold = opts[:mutation_threshold] || 0.5
      @recombination_threshold = opts[:recombination_threshold] || 0.5
      unless @bitstring_length and @bitstring_length > 0
Severity: Minor
Found in lib/mhl/bitstring_genotype_space.rb - About 25 mins 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

Method update_positions has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def update_positions(positions, fitness, iteration)
      # get the alpha, beta, and delta wolves
      alpha, beta, delta = find_alpha_beta_delta(fitness)
      alpha = positions[alpha]
      beta = positions[beta]
Severity: Minor
Found in lib/mhl/grey_wolf_solver.rb - About 25 mins 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

Method initialize has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def initialize(opts, logger)
      @random_func = opts[:random_func]

      @dimensions = opts[:dimensions].to_i
      unless @dimensions and @dimensions > 0
Severity: Minor
Found in lib/mhl/integer_vector_genotype_space.rb - About 25 mins 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

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

      if @concurrent 
        futures = positions.map do |pos|
          Concurrent::Future.execute { func.call(pos) }
        end
        fitness = futures.map(&:value)
Severity: Minor
Found in lib/mhl/grey_wolf_solver.rb and 1 other location - About 20 mins to fix
lib/mhl/grey_wolf_solver.rb on lines 110..116

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 28.

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

        if params[:concurrent]
          # the function to optimize is thread safe: call it multiple times in
          # a concurrent fashion
          # to this end, we use the high level promise-based construct
          # recommended by the authors of ruby's (fantastic) concurrent gem
Severity: Minor
Found in lib/mhl/particle_swarm_optimization_solver.rb and 1 other location - About 20 mins to fix
lib/mhl/quantum_particle_swarm_optimization_solver.rb on lines 91..110

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 28.

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

        if @concurrent
          futures = positions.map do |pos|
            Concurrent::Future.execute { func.call(pos) }
          end
          fitness = futures.map(&:value)
Severity: Minor
Found in lib/mhl/grey_wolf_solver.rb and 1 other location - About 20 mins to fix
lib/mhl/grey_wolf_solver.rb on lines 87..93

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 28.

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

        begin
          p_r = opts[:recombination_probability].to_f
          @recombination_rv = \
            ERV::RandomVariable.new(distribution: :uniform,
                                    args: { min_value: -p_r, max_value: 1.0 + p_r })
Severity: Minor
Found in lib/mhl/genetic_algorithm_solver.rb and 1 other location - About 20 mins to fix
lib/mhl/genetic_algorithm_solver.rb on lines 56..62

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 28.

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

        if params[:concurrent]
          # the function to optimize is thread safe: call it multiple times in
          # a concurrent fashion
          # to this end, we use the high level promise-based construct
          # recommended by the authors of ruby's (fantastic) concurrent gem
Severity: Minor
Found in lib/mhl/quantum_particle_swarm_optimization_solver.rb and 1 other location - About 20 mins to fix
lib/mhl/particle_swarm_optimization_solver.rb on lines 115..134

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 28.

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

        begin
          p_r = opts[:recombination_probability].to_f
          @recombination_rv = \
            ERV::RandomVariable.new(distribution: :uniform,
                                    args: { min_value: -p_r, max_value: 1.0 + p_r })
Severity: Minor
Found in lib/mhl/genetic_algorithm_solver.rb and 1 other location - About 20 mins to fix
lib/mhl/genetic_algorithm_solver.rb on lines 71..77

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 28.

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

    def get_random
      if @random_func
        @random_func.call
      else
        if @constraints
Severity: Minor
Found in lib/mhl/integer_vector_genotype_space.rb and 1 other location - About 20 mins to fix
lib/mhl/real_vector_genotype_space.rb on lines 31..38

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 27.

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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