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nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java

Summary

Maintainability
F
4 days
Test Coverage

MathUtils has 82 methods (exceeds 20 allowed). Consider refactoring.
Open

public class MathUtils {



    /**
Severity: Major
Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java - About 1 day to fix

    File MathUtils.java has 645 lines of code (exceeds 250 allowed). Consider refactoring.
    Open

    /*
 *  ******************************************************************************
 *  *
 *  *
 *  * This program and the accompanying materials are made available under the
    Severity: Major
    Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java - About 1 day to fix

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

          public static int probRound(double value, Random rand) {

        if (value >= 0) {
            double lower = Math.floor(value);
            double prob = value - lower;
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java - 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 distanceFinderZValue has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
      Open

          public static int distanceFinderZValue(double[] vector) {
        StringBuilder binaryBuffer = new StringBuilder();
        List<String> binaryReps = new ArrayList<String>(vector.length);
        for (int i = 0; i < vector.length; i++) {
            double d = vector[i];
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java - 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

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

          public static double stringSimilarity(String... strings) {
        if (strings == null)
            return 0;
        Counter<String> counter = new Counter<>();
        Counter<String> counter2 = new Counter<>();
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java - 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

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

          public static double euclideanDistance(float[] p, float[] q) {

        double ret = 0;
        for (int i = 0; i < p.length; i++) {
            double diff = (q[i] - p[i]);
      Severity: Major
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 1 hr to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 1206..1216

      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 83.

      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

          public static double euclideanDistance(double[] p, double[] q) {

        double ret = 0;
        for (int i = 0; i < p.length; i++) {
            double diff = (q[i] - p[i]);
      Severity: Major
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 1 hr to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 1226..1236

      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 83.

      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

              for (int i = 0; i < vector.length; i++) {
            if (i % 2 == 0)
                y[count++] = vector[i];
        }
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 40 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 693..696

      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 52.

      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

              for (int i = 0; i < vector.length; i++) {
            if (i % 2 != 0)
                x[count++] = vector[i];
        }
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 40 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 709..712

      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 52.

      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

          public static int randomNumberBetween(double begin, double end, RandomGenerator rng) {
        if (begin > end)
            throw new IllegalArgumentException("Begin must not be less than end");
        return (int) begin + (int) (rng.nextDouble() * ((end - begin) + 1));
    }
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 35 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 1306..1310

      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 47.

      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

          public static int randomNumberBetween(double begin, double end) {
        if (begin > end)
            throw new IllegalArgumentException("Begin must not be less than end");
        return (int) begin + (int) (Math.random() * ((end - begin) + 1));
    }
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 35 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 1319..1323

      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 47.

      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

              for (int i = 0; i < strings[1].length(); i++)
            counter2.incrementCount(String.valueOf(strings[1].charAt(i)), 1.0f);
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 35 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 229..230

      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 46.

      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

              for (int i = 0; i < strings[0].length(); i++)
            counter.incrementCount(String.valueOf(strings[0].charAt(i)), 1.0f);
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 35 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 232..233

      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 46.

      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

          public static double max(double[] doubles) {
        double ret = doubles[0];
        for (double d : doubles)
            if (d > ret)
                ret = d;
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 35 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 818..824

      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

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

          public static double min(double[] doubles) {
        double ret = doubles[0];
        for (double d : doubles)
            if (d < ret)
                ret = d;
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 35 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 826..832

      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

              if (Math.abs(a) > Math.abs(b)) {
            r = b / a;
            r = Math.abs(a) * Math.sqrt(1 + r * r);
        } else if (b != 0) {
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 30 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 995..998

      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

              } else if (b != 0) {
            r = a / b;
            r = Math.abs(b) * Math.sqrt(1 + r * r);
        } else {
      Severity: Minor
      Found in nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java and 1 other location - About 30 mins to fix
      nd4j/nd4j-common/src/main/java/org/nd4j/common/util/MathUtils.java on lines 992..995

      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

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