Struct Level 

pub struct Level {
    pub s: usize,
    pub primal: Graph,
    pub dual: Graph,
}

One level of an s-filtration: both readings of the incidence matrix at overlap threshold s.

The index is an incidence matrix — tags by situations — and it can be read in two directions:

• primal — situations are nodes, joined when they share at least s tags. Which events are related?
• dual — tags are nodes, joined when they co-occur in at least s situations. Which concepts belong together?

Nothing is rebuilt to switch between them: it is the same matrix transposed. That is the structural reason a hypergraph engine gets the dual for free where a pairwise graph needs a second index kept in step with the first.

Fields

s: usize

primal: Graph

dual: Graph

Trait Implementations

impl Clone for Level

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Level

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

Formats the value using the given formatter.

impl Serialize for Level

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.