Struct MatrixFeatures

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pub struct MatrixFeatures {
    pub n: usize,
    pub nnz: usize,
    pub density: f64,
    pub max_row_nnz: usize,
    pub mean_row_nnz: f64,
    pub bandwidth: usize,
    pub bandwidth_ratio: f64,
    pub cond_estimate: f64,
    pub spectral_radius: f64,
    pub diag_dominance: f64,
    pub symmetry_measure: f64,
    pub has_positive_diagonal: bool,
}

Expand description

Numerical features extracted from a sparse matrix for classification.

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§n: usize

Matrix dimension (rows = cols for square matrices).

§nnz: usize

Number of non-zero entries.

§density: f64

Density = nnz / (n * n).

§max_row_nnz: usize

Maximum number of non-zeros in any single row.

§mean_row_nnz: f64

Mean number of non-zeros per row.

§bandwidth: usize

Half-bandwidth: max |i - j| over all stored (i, j).

§bandwidth_ratio: f64

Bandwidth ratio: bandwidth / n.

§cond_estimate: f64

Cheap condition number estimate (max diag / min diag).

§spectral_radius: f64

Spectral radius estimate via Gershgorin bound.

§diag_dominance: f64

Diagonal dominance ratio: min_i |a_ii| / sum_{j!=i} |a_ij|.

§symmetry_measure: f64

Symmetry measure: fraction of (i,j) entries that have a matching (j,i).

§has_positive_diagonal: bool

Whether all diagonal entries are positive.

Trait Implementations§

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impl Clone for MatrixFeatures

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fn clone(&self) -> MatrixFeatures

Returns a duplicate of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for MatrixFeatures

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for MatrixFeatures

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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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> 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)

Performs copy-assignment from self to dest. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T
where U: From<T>,

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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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impl<T> IntoEither for T

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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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