RsBundle  Diff

        debug!("  expected={}", self.expected_progress);
        Ok(())
    }


    /// Reduce size of bundle.
    fn compress_bundle(&mut self) {
        if self.master.num_minorants() > 1 {
            let n = self.master.num_minorants();
            self.master.aggregate(0, &(0..n).collect::<Vec<_>>());
        for i in 0..self.problem.num_subproblems() {
            let n = self.master.num_minorants(i);
            if n >= self.params.max_bundle_size {
                self.master.aggregate(0, &(self.params.max_bundle_size-2..n).collect::<Vec<_>>());
            }
        }
    }

    /// Perform a descent step.
    fn descent_step(&mut self) {
        let new_weight = self.weighter.weight(&current_state!(self, Step::Descent), &self.params);
        self.master.set_weight(new_weight);