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use std::time::{Duration};
use errors::ErrorKind::{InvalidLatestMSE, InvalidRecentMSE};
use errors::Result;
use traits::{LearnRate, LearnMomentum};
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum Criterion {
TimeOut(Duration),
Iterations(u64),
LatestMSE(f64),
RecentMSE(f64),
}
impl Criterion {
pub fn check_validity(&self) -> Result<()> {
use self::Criterion::*;
match *self {
TimeOut(_) |
Iterations(_) => Ok(()),
LatestMSE(mse) => {
if mse > 0.0 && mse < 1.0 {
Ok(())
} else {
Err(InvalidLatestMSE)
}
}
RecentMSE(recent) => {
if recent > 0.0 && recent < 1.0 {
Ok(())
} else {
Err(InvalidRecentMSE)
}
}
}
}
}
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum LearnRateConfig {
Adapt,
Fixed(LearnRate),
}
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum LearnMomentumConfig {
Adapt,
Fixed(LearnMomentum),
}
#[derive(Debug, Copy, Clone, PartialEq, Eq)]
pub enum LogConfig {
Never,
TimeSteps(Duration),
Iterations(u64)
}
impl Default for LogConfig {
fn default() -> Self {
LogConfig::Never
}
}
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum Scheduling {
Random,
Iterative,
}