Struct RatingDedup

pub struct RatingDedup<R>
where
    R: FromRatingSet,
    for<'a> &'a [R]: RecordWriter<R>,
{
    _phantom: PhantomData<R>,
    table: HashMap<Key, Vec<(f32, i64)>>,
}

Rating deduplicator.

Fields

_phantom: PhantomData<R>

table: HashMap<Key, Vec<(f32, i64)>>

Implementations

impl<R> RatingDedup<R>

where R: FromRatingSet + Send + Sync + 'static, for<'a> &'a [R]: RecordWriter<R>,

pub fn record(&mut self, user: i32, item: i32, rating: f32, timestamp: i64)

Add a rating to the deduplicator.

pub fn write_ratings<P: AsRef<Path>>(&mut self, path: P) -> Result<usize>

Save the rating table disk.

Trait Implementations

impl<I: Interaction, R> Dedup<I> for RatingDedup<R>

where R: FromRatingSet + Send + Sync + 'static, for<'a> &'a [R]: RecordWriter<R>,

fn add_interaction(&mut self, act: I) -> Result<()>

Save an item in the deduplciator.

fn save(&mut self, path: &Path) -> Result<usize>

Write the de-duplicated reuslts to a file.

impl<R> Default for RatingDedup<R>

where R: FromRatingSet + Send + Sync + 'static, for<'a> &'a [R]: RecordWriter<R>,

fn default() -> RatingDedup<R>

Returns the “default value” for a type.