Struct Tree

pub struct Tree<T> { /* private fields */ }

Tree<T> represents the main tree data struct will be used during the FP-Growth algorithm.

Implementations

impl<T: ItemType> Tree<T>

pub fn new() -> Tree<T>

Create a new FP-Growth tree with an empty root node.

pub fn generate_partial_tree(paths: &[Vec<Rc<Node<T>>>]) -> Tree<T>

Generate a partial tree with the given paths. This function will be called during the algorithm.

pub fn add_transaction(&mut self, transaction: Vec<T>)

Iterate the transaction and add every item to the FP-Growth tree.

pub fn update_route(&mut self, node: Rc<Node<T>>)

Update the route table that records the item and its node list.

pub fn generate_prefix_path(&self, item: T) -> Vec<Vec<Rc<Node<T>>>>

Generate the prefix paths that end with the given item.

pub fn get_all_nodes(&self, item: T) -> Vec<Rc<Node<T>>>

Get all nodes that holds the given item.

pub fn get_all_items_nodes(&self) -> Vec<(T, Vec<Rc<Node<T>>>)>

Get all nodes with the given item.

pub fn print(&self)

Print out the tree.

Trait Implementations

impl<T: ItemType> Default for Tree<T>

fn default() -> Self

Returns the “default value” for a type.