java-defects4j-math-105-simpleregression

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Before

program

package_declaration

package "package"

scoped_identifier

identifier "org"

. "."

identifier "apache"

. "."

identifier "commons"

. "."

identifier "math"

. "."

identifier "stat"

. "."

identifier "regression"

; ";"

import_declaration

import "import"

scoped_identifier

identifier "java"

. "."

identifier "io"

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identifier "Serializable"

; ";"

import_declaration

import "import"

scoped_identifier

identifier "org"

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identifier "apache"

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identifier "commons"

. "."

identifier "math"

. "."

identifier "MathException"

; ";"

import_declaration

import "import"

scoped_identifier

identifier "org"

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identifier "apache"

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identifier "commons"

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identifier "math"

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identifier "distribution"

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identifier "DistributionFactory"

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import_declaration

import "import"

scoped_identifier

identifier "org"

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identifier "apache"

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identifier "commons"

. "."

identifier "math"

. "."

identifier "distribution"

. "."

identifier "TDistribution"

; ";"

block_comment "/**\n * Estimates an ordinary least squares regression model\n"...

class_declaration

modifiers

public "public"

class "class"

identifier "SimpleRegression"

super_interfaces

implements "implements"

type_list

type_identifier "Serializable"

class_body

{ "{"

block_comment "/** Serializable version identifier */"

field_declaration

modifiers

private "private"

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unary_expression

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block_comment "/** sum of x values */"

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumX"

= "="

decimal_floating_point_literal "0d"

; ";"

block_comment "/** total variation in x (sum of squared deviations from xba"...

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumXX"

= "="

decimal_floating_point_literal "0d"

; ";"

block_comment "/** sum of y values */"

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumY"

= "="

decimal_floating_point_literal "0d"

; ";"

block_comment "/** total variation in y (sum of squared deviations from yba"...

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumYY"

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decimal_floating_point_literal "0d"

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block_comment "/** sum of products */"

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumXY"

= "="

decimal_floating_point_literal "0d"

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block_comment "/** number of observations */"

field_declaration

modifiers

private "private"

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long "long"

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block_comment "/** mean of accumulated x values, used in updating formulas "...

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

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; ";"

block_comment "/** mean of accumulated y values, used in updating formulas "...

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "ybar"

= "="

decimal_integer_literal "0"

; ";"

line_comment "// ---------------------Public methods----------------------"...

block_comment "/**\n * Create an empty SimpleRegression instance\n */"

constructor_declaration

modifiers

public "public"

identifier "SimpleRegression"

formal_parameters

( "("

) ")"

constructor_body

{ "{"

explicit_constructor_invocation

super "super"

argument_list

( "("

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} "}"

block_comment "/**\n * Adds the observation (x,y) to the regression data"...

method_declaration (+220 nodes collapsed)

block_comment "/**\n * Adds the observations represented by the elements"...

method_declaration (+73 nodes collapsed)

block_comment "/**\n * Clears all data from the model.\n */"

method_declaration (+47 nodes collapsed)

block_comment "/**\n * Returns the number of observations that have been"...

method_declaration

modifiers

public "public"

integral_type

long "long"

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formal_parameters

( "("

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{ "{"

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block_comment "/**\n * Returns the \"predicted\" <code>y</code> value asso"...

method_declaration (+43 nodes collapsed)

block_comment "/**\n * Returns the intercept of the estimated regression"...

method_declaration (+25 nodes collapsed)

block_comment "/**\n * Returns the slope of the estimated regression line"...

method_declaration (+72 nodes collapsed)

block_comment "/**\n * Returns the <a href=\"http://www.xycoon.com/SumOfS"...

method_declaration

modifiers

public "public"

floating_point_type

double "double"

identifier "getSumSquaredErrors"

formal_parameters

( "("

) ")"

block

{ "{"

return_statement

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binary_expression

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block_comment "/**\n * Returns the sum of squared deviations of the y va"...

method_declaration (+35 nodes collapsed)

block_comment "/**\n * Returns the sum of squared deviations of the pred"...

method_declaration (+25 nodes collapsed)

block_comment "/**\n * Returns the sum of squared errors divided by the "...

method_declaration (+53 nodes collapsed)

block_comment "/**\n * Returns <a href=\"http://mathworld.wolfram.com/Cor"...

method_declaration (+67 nodes collapsed)

block_comment "/** \n * Returns the <a href=\"http://www.xycoon.com/coeff"...

method_declaration (+41 nodes collapsed)

block_comment "/**\n * Returns the <a href=\"http://www.xycoon.com/standa"...

method_declaration (+56 nodes collapsed)

block_comment "/**\n * Returns the <a href=\"http://www.xycoon.com/stande"...

method_declaration (+30 nodes collapsed)

block_comment "/**\n * Returns the half-width of a 95% confidence interv"...

method_declaration (+24 nodes collapsed)

block_comment "/**\n * Returns the half-width of a (100-100*alpha)% conf"...

method_declaration (+74 nodes collapsed)

block_comment "/**\n * Returns the significance level of the slope (equi"...

method_declaration (+57 nodes collapsed)

line_comment "// ---------------------Private methods---------------------"...

block_comment "/**\n * Returns the intercept of the estimated regression "...

method_declaration (+40 nodes collapsed)

block_comment "/**\n * Computes SSR from b1.\n * \n * @param slope"...

method_declaration (+26 nodes collapsed)

block_comment "/**\n * Uses distribution framework to get a t distributi"...

method_declaration (+31 nodes collapsed)

} "}"

After

program

package_declaration

package "package"

scoped_identifier

identifier "org"

. "."

identifier "apache"

. "."

identifier "commons"

. "."

identifier "math"

. "."

identifier "stat"

. "."

identifier "regression"

; ";"

import_declaration

import "import"

scoped_identifier

identifier "java"

. "."

identifier "io"

. "."

identifier "Serializable"

; ";"

import_declaration

import "import"

scoped_identifier

identifier "org"

. "."

identifier "apache"

. "."

identifier "commons"

. "."

identifier "math"

. "."

identifier "MathException"

; ";"

import_declaration

import "import"

scoped_identifier

identifier "org"

. "."

identifier "apache"

. "."

identifier "commons"

. "."

identifier "math"

. "."

identifier "distribution"

. "."

identifier "DistributionFactory"

; ";"

import_declaration

import "import"

scoped_identifier

identifier "org"

. "."

identifier "apache"

. "."

identifier "commons"

. "."

identifier "math"

. "."

identifier "distribution"

. "."

identifier "TDistribution"

; ";"

block_comment "/**\n * Estimates an ordinary least squares regression model\n"...

class_declaration

modifiers

public "public"

class "class"

identifier "SimpleRegression"

super_interfaces

implements "implements"

type_list

type_identifier "Serializable"

class_body

{ "{"

block_comment "/** Serializable version identifier */"

field_declaration

modifiers

private "private"

static "static"

final "final"

integral_type

long "long"

variable_declarator

identifier "serialVersionUID"

= "="

unary_expression

- "-"

decimal_integer_literal "3004689053607543335L"

; ";"

block_comment "/** sum of x values */"

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumX"

= "="

decimal_floating_point_literal "0d"

; ";"

block_comment "/** total variation in x (sum of squared deviations from xba"...

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumXX"

= "="

decimal_floating_point_literal "0d"

; ";"

block_comment "/** sum of y values */"

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumY"

= "="

decimal_floating_point_literal "0d"

; ";"

block_comment "/** total variation in y (sum of squared deviations from yba"...

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumYY"

= "="

decimal_floating_point_literal "0d"

; ";"

block_comment "/** sum of products */"

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "sumXY"

= "="

decimal_floating_point_literal "0d"

; ";"

block_comment "/** number of observations */"

field_declaration

modifiers

private "private"

integral_type

long "long"

variable_declarator

identifier "n"

= "="

decimal_integer_literal "0"

; ";"

block_comment "/** mean of accumulated x values, used in updating formulas "...

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "xbar"

= "="

decimal_integer_literal "0"

; ";"

block_comment "/** mean of accumulated y values, used in updating formulas "...

field_declaration

modifiers

private "private"

floating_point_type

double "double"

variable_declarator

identifier "ybar"

= "="

decimal_integer_literal "0"

; ";"

line_comment "// ---------------------Public methods----------------------"...

block_comment "/**\n * Create an empty SimpleRegression instance\n */"

constructor_declaration

modifiers

public "public"

identifier "SimpleRegression"

formal_parameters

( "("

) ")"

constructor_body

{ "{"

explicit_constructor_invocation

super "super"

argument_list

( "("

) ")"

; ";"

} "}"

block_comment "/**\n * Adds the observation (x,y) to the regression data"...

method_declaration (+220 nodes collapsed)

block_comment "/**\n * Adds the observations represented by the elements"...

method_declaration (+73 nodes collapsed)

block_comment "/**\n * Clears all data from the model.\n */"

method_declaration (+47 nodes collapsed)

block_comment "/**\n * Returns the number of observations that have been"...

method_declaration

modifiers

public "public"

integral_type

long "long"

identifier "getN"

formal_parameters

( "("

) ")"

block

{ "{"

return_statement

return "return"

identifier "n"

; ";"

} "}"

block_comment "/**\n * Returns the \"predicted\" <code>y</code> value asso"...

method_declaration (+43 nodes collapsed)

block_comment "/**\n * Returns the intercept of the estimated regression"...

method_declaration (+25 nodes collapsed)

block_comment "/**\n * Returns the slope of the estimated regression line"...

method_declaration (+72 nodes collapsed)

block_comment "/**\n * Returns the <a href=\"http://www.xycoon.com/SumOfS"...

method_declaration

modifiers

public "public"

floating_point_type

double "double"

identifier "getSumSquaredErrors"

formal_parameters

( "("

) ")"

block

{ "{"

return_statement

return "return"

method_invocation

identifier "Math"

. "."

identifier "max"

argument_list

( "("

decimal_floating_point_literal "0d"

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binary_expression

identifier "sumYY"

- "-"

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} "}"

block_comment "/**\n * Returns the sum of squared deviations of the y va"...

method_declaration (+35 nodes collapsed)

block_comment "/**\n * Returns the sum of squared deviations of the pred"...

method_declaration (+25 nodes collapsed)

block_comment "/**\n * Returns the sum of squared errors divided by the "...

method_declaration (+53 nodes collapsed)

block_comment "/**\n * Returns <a href=\"http://mathworld.wolfram.com/Cor"...

method_declaration (+67 nodes collapsed)

block_comment "/** \n * Returns the <a href=\"http://www.xycoon.com/coeff"...

method_declaration (+41 nodes collapsed)

block_comment "/**\n * Returns the <a href=\"http://www.xycoon.com/standa"...

method_declaration (+56 nodes collapsed)

block_comment "/**\n * Returns the <a href=\"http://www.xycoon.com/stande"...

method_declaration (+30 nodes collapsed)

block_comment "/**\n * Returns the half-width of a 95% confidence interv"...

method_declaration (+24 nodes collapsed)

block_comment "/**\n * Returns the half-width of a (100-100*alpha)% conf"...

method_declaration (+74 nodes collapsed)

block_comment "/**\n * Returns the significance level of the slope (equi"...

method_declaration (+57 nodes collapsed)

line_comment "// ---------------------Private methods---------------------"...

block_comment "/**\n * Returns the intercept of the estimated regression "...

method_declaration (+40 nodes collapsed)

block_comment "/**\n * Computes SSR from b1.\n * \n * @param slope"...

method_declaration (+26 nodes collapsed)

block_comment "/**\n * Uses distribution framework to get a t distributi"...

method_declaration (+31 nodes collapsed)

} "}"