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47 changes: 16 additions & 31 deletions symbolic/constant_vector.go
Original file line number Diff line number Diff line change
Expand Up @@ -145,7 +145,8 @@ func (kv KVector) Plus(rightIn interface{}) Expression {
// Constants
kvLen := kv.Len()

// Management
// Algorithm
var out Expression
switch right := rightIn.(type) {
case float64:
// Check to see if the output is a vector or a scalar
Expand All @@ -159,42 +160,26 @@ func (kv KVector) Plus(rightIn interface{}) Expression {
eAsVec.ScaleVec(right, &tempOnes)

// Add the values
return kv.Plus(VecDenseToKVector(eAsVec))
case K, Variable, Monomial, Polynomial:
// Create a new polynomial vector
var out []ScalarExpression
for _, element := range kv {
out = append(out, element.Plus(right).(ScalarExpression))
}
return ConcretizeVectorExpression(out)
out = kv.Plus(VecDenseToKVector(eAsVec))
case Expression:
out = VectorPlusTemplate(kv, right)

case *mat.VecDense:
return kv.Plus(VecDenseToKVector(*right)) // Convert to KVector
out = kv.Plus(VecDenseToKVector(*right)) // Convert to KVector
case mat.VecDense:
return kv.Plus(VecDenseToKVector(right)) // Convert to KVector

case KVector:
// Compute Addition
var result mat.VecDense
kvAsVec := kv.ToVecDense()
eAsVec := right.ToVecDense()
result.AddVec(&kvAsVec, &eAsVec)

return VecDenseToKVector(result)

case VariableVector:
return right.Plus(kv)

case MonomialVector:
return right.Plus(kv)

case PolynomialVector:
return right.Plus(kv)
out = kv.Plus(VecDenseToKVector(right)) // Convert to KVector

default:
errString := fmt.Sprintf("Unrecognized expression type %T for addition of KVector kv.Plus(%v)!", right, right)
panic(fmt.Errorf(errString))
panic(
smErrors.UnsupportedInputError{
FunctionName: "KVector.Plus",
Input: rightIn,
},
)
}

// Simplify and return
return out.AsSimplifiedExpression()
}

/*
Expand Down
90 changes: 4 additions & 86 deletions symbolic/monomial_vector.go
Original file line number Diff line number Diff line change
Expand Up @@ -150,92 +150,10 @@ func (mv MonomialVector) Plus(term1 interface{}) Expression {
switch right := term1.(type) {
case float64:
out = mv.Plus(K(right))
case K:
// Convert the scalar to a scalar vector
tempVD := OnesVector(mv.Len())
tempVD.ScaleVec(float64(right), &tempVD)

out = mv.Plus(VecDenseToKVector(tempVD))
case Monomial:
// Check to see if all elements of the monomial vector,
// are all monomials like the input monomial.
monomialVectorMatches := true
for _, monomial := range mv {
if !monomial.MatchesFormOf(right) {
monomialVectorMatches = false
}
}

if monomialVectorMatches {
// If all elements of the monomial vector are monomials like the input monomial,
// then simply add the coefficients. and return a monomial vector.
var mvOut MonomialVector
for _, monomial := range mv {
mvOut = append(mvOut, monomial.Plus(right).(Monomial))
}
out = mvOut
} else {
// Otherwise, create a polynomial vector
var pv PolynomialVector
for _, monomial := range mv {
pv = append(pv, monomial.Plus(right).(Polynomial))
}
out = pv.Simplify()
}
case KVector:
if mv.IsConstant() {
// If monomial vector is really a constant vector,
// then don't convert down but simply update the coefficients.
var kvOut KVector = VecDenseToKVector(mv.Constant())
out = kvOut.Plus(right)
} else {
// Create a polynomial vector
var ve []ScalarExpression
for ii, monomial := range mv {
ve = append(ve, monomial.Plus(right[ii]).(ScalarExpression))
}
out = ConcretizeVectorExpression(ve)
}
case MonomialVector:
// Check to see if all elements of the monomial vector,
// are all monomials like the input monomial.
monomialVectorMatches := true
for ii, monomial := range mv {
if !monomial.MatchesFormOf(right[ii]) {
monomialVectorMatches = false
}
}

if monomialVectorMatches {
// If all elements of the monomial vector are monomials like the input monomial,
// then simply add the coefficients. and return a monomial vector.
var mvOut MonomialVector
for ii, monomial := range mv {
mvOut = append(mvOut, monomial.Plus(right[ii]).(Monomial))
}
out = mvOut
} else {
// Otherwise, create a polynomial vector
var pv PolynomialVector
for ii, monomial := range mv {
sumII := monomial.Plus(right[ii])
switch sumII.(type) {
case Monomial:
pv = append(pv, sumII.(Monomial).ToPolynomial())
case Polynomial:
pv = append(pv, sumII.(Polynomial))
default:
panic(
fmt.Errorf(
"Unexpected type of sumII in the Plus() method: %T (%v)",
sumII, sumII,
),
)

}
}
out = pv.Simplify()
}
case int:
out = mv.Plus(K(float64(right)))
case Expression:
out = VectorPlusTemplate(mv, right)
default:
// If the right hand side is an unsupported type, then panic
panic(
Expand Down
42 changes: 2 additions & 40 deletions symbolic/polynomial_vector.go
Original file line number Diff line number Diff line change
Expand Up @@ -196,46 +196,8 @@ func (pv PolynomialVector) Plus(e interface{}) Expression {
switch right := e.(type) {
case float64:
out = pv.Plus(K(right))
case K:
pvCopy := pv

// Algorithm
var sum []ScalarExpression
for _, polynomial := range pvCopy {
tempSum := polynomial.Plus(right)
sum = append(sum, tempSum.(ScalarExpression))
}
out = ConcretizeExpression(sum)
case Variable:
pvCopy := pv
for ii, polynomial := range pv {
sum := polynomial.Plus(right)
pvCopy[ii] = sum.(Polynomial)
}
out = pvCopy

case Polynomial:
pvCopy := pv

// Algorithm
for ii, polynomial := range pv {
sum := polynomial.Plus(right)
pvCopy[ii] = sum.(Polynomial)
}
out = pvCopy
case VectorExpression:
pvCopy := pv

// Cast right
rightAsVector, _ := ToVectorExpression(right)

// Algorithm
var sum []ScalarExpression
for ii, polynomial := range pvCopy {
tempSum := polynomial.Plus(rightAsVector.AtVec(ii))
sum = append(sum, tempSum.(ScalarExpression))
}
out = ConcretizeExpression(sum)
case Expression:
out = VectorPlusTemplate(pv, right)
default:
// Default response is a panic
panic(
Expand Down
37 changes: 37 additions & 0 deletions testing/symbolic/constant_matrix_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,10 @@ import (
"testing"

getKMatrix "github.com/MatProGo-dev/SymbolicMath.go/get/KMatrix"
getKVector "github.com/MatProGo-dev/SymbolicMath.go/get/KVector"
"github.com/MatProGo-dev/SymbolicMath.go/smErrors"
"github.com/MatProGo-dev/SymbolicMath.go/symbolic"
"gonum.org/v1/gonum/mat"
)

/*
Expand Down Expand Up @@ -745,6 +747,41 @@ func TestKMatrix_Multiply10(t *testing.T) {
}
}

/*
TestKMatrix_Multiply11
Description:

Tests that the Multiply() method properly multiplies a large KMatrix
that was causing issues when trying to debug the tricky gonum LP:
https://github.com/gonum/gonum/issues/1914
The KMatrix should have 57 variables.
*/
func TestKMatrix_Multiply11(t *testing.T) {
// Setup
varCount := 57

// Create the variables
x := symbolic.NewVariableVector(varCount)

// - Linear Equality Constraints
b := getKVector.From(
[]float64{38, 5, 2, 33, 28, 14, 2, 48, 8, 133, 117, 34, 48, 20, 16, 50, 30, 75, 10, 40, 6, 70, 10, 5, 167, 13, 2, 118, 12, 98, 67, 157, 55, 2, 4, 4, 25, 4},
)

Abuf := []float64{
1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0.95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.95}
A := mat.NewDense(38, varCount, Abuf)

// Create constraint with NO panics
defer func() {
if r := recover(); r != nil {
t.Errorf("Did not expect panic; received %v", r)
}
}()

getKMatrix.From(A).Multiply(x).Eq(b)
}

/*
TestKMatrix_Transpose1
Description:
Expand Down