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SolveStatus

Enum SolveStatus 

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#[non_exhaustive]
pub enum SolveStatus { Optimal, LocallyOptimal, Infeasible, Unbounded, MaxIterations, SuboptimalSolution, Timeout, NumericalError, NonConvex(String), NonconvexLocal, NonconvexGlobal, NotSupported(String), }
Expand description

ソルバーの求解結果ステータス

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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Optimal

最適解が求まった

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LocallyOptimal

局所的最適解(非凸QP: 慣性修正付きIPMが収束したKKT点)

Q行列が不定(indefinite)の場合、大域的最適性は保証されないが、 KKT条件を満たす局所最適解またはサドル点が返される。 慣性修正(Gershgorin 評価から導出した δI 加算)により IPM を収束させた。

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Infeasible

問題が実行不可能(infeasible)

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Unbounded

問題が非有界(unbounded)

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MaxIterations

反復回数上限に到達した(最適性未確認)

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SuboptimalSolution

解は見つかったが精度基準未達(偽Optimal検出: スケール解除後の残差超過)

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Timeout

タイムアウト(timeout_secs を超過した)

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NumericalError

数値エラー(LDL分解失敗等、問題が数値的に解けない)

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NonConvex(String)

Q行列が不定(非凸QP)。IPMはQ正半定値を前提とする。

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NonconvexLocal

非凸 QP の局所最適解 (= solve_qp_global 経由で incumbent あり、ε-global 証明なし)。

BB driver が deadline / max_nodes / max_depth で打ち切られ、incumbent ある状態。 LocallyOptimal (= IPM inertia 補正後の単発解) と区別して、caller が「探索打切」 vs「単発 KKT 収束」を識別できる。Optimal には含めない (= global proof なし)。

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NonconvexGlobal

非凸 QP の大域 ε-最適解 (= solve_qp_global で gap_tol まで証明済み + Q が indefinite)。

Optimal は「Q が PSD で IPM/BB が global 達成」専用に維持し、indefinite Q の場合は 本 variant で明示分離する (caller が「global 証明済」かを fact で判別)。

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NotSupported(String)

Problem type not supported by this solver.

Returned when the caller passes a problem that cannot be handled, e.g. a QCQP (quadratic constraints present) submitted to the QP/LP entry.

Trait Implementations§

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impl Clone for SolveStatus

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fn clone(&self) -> SolveStatus

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SolveStatus

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Display for SolveStatus

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for SolveStatus

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fn eq(&self, other: &SolveStatus) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for SolveStatus

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impl<T> Any for T
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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> ByRef<T> for T

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fn by_ref(&self) -> &T

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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impl<T> DistributionExt for T
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fn rand<T>(&self, rng: &mut (impl Rng + ?Sized)) -> T
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fn from(t: T) -> T

Returns the argument unchanged.

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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Dereferences the given pointer. Read more
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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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