Method sample

examples/sequence-to-sequence/encdec.h:361–370

private:
    inline int sample(const vector<float>& v) {
        float p = (float)rand() / (float) RAND_MAX;
        float cumul = 0.f;
        int idx = 0;
        while (idx < static_cast<int>(v.size()) && p > cumul) {
            cumul += v[idx];
            idx += 1;
        }
        return idx ? idx - 1 : 0;
    }
};