stochastic
Significado: Involving or characterised by randomness or probability, where outcomes cannot be precisely predicted but can be described by statistical distributions.
Stochastic processes are central to finance, physics, biology, and machine learning. Brownian motion, stock price movements, and radioactive decay are all modelled stochastically. In artificial intelligence, stochastic gradient descent is a foundational optimisation algorithm. The term is more formal and technical than 'random,' implying structured mathematical treatment of uncertainty. It is rarely used outside academic, scientific, and financial writing.
Ejemplos
- The financial model used stochastic simulations to estimate the range of possible returns over a twenty-year investment horizon. 该金融模型使用随机模拟来估计二十年投资期限内可能的回报范围。El modelo financiero empleó simulaciones estocásticas para estimar el rango de posibles rendimientos en un horizonte de inversión de veinte años.その金融モデルは確率的シミュレーションを用いて、20年間の投資期間にわたる想定リターンの範囲を推定した。그 금융 모델은 확률적 시뮬레이션을 사용하여 20년 투자 기간에 걸친 예상 수익률의 범위를 추정했다.
- Stochastic gradient descent introduces controlled randomness into the optimisation process, helping neural networks escape local minima. 随机梯度下降在优化过程中引入可控的随机性,帮助神经网络跳出局部最小值。El descenso estocástico del gradiente introduce aleatoriedad controlada en el proceso de optimización, ayudando a las redes neuronales a escapar de mínimos locales.確率的勾配降下法は最適化プロセスに制御されたランダム性を導入し、ニューラルネットワークが局所最適解から抜け出す助けとなる。확률적 경사 하강법은 최적화 과정에 제어된 무작위성을 도입하여 신경망이 국소 최솟값에서 벗어나도록 돕는다.
- The researchers developed a stochastic model of population dynamics that accounted for random environmental fluctuations. 研究人员开发了一个考虑随机环境波动的种群动态随机模型。Los investigadores desarrollaron un modelo estocástico de dinámica de poblaciones que tenía en cuenta las fluctuaciones ambientales aleatorias.研究者たちは、ランダムな環境変動を考慮した個体群動態の確率モデルを開発した。연구자들은 무작위적 환경 변동을 고려한 개체군 역학의 확률 모델을 개발했다.
Pronunciación
Guía de uso
Contexto: scientific, academic, professional
Tono: neutral
Origen e historia
From Greek stokhastikos (able to guess, conjectural), from stokhazesthai (to aim at, guess), from stokhos (aim, target). Entered English mathematical usage in the early 20th century, popularised by the work of Andrey Kolmogorov.
Contexto cultural
Era: Modern
Generation: All ages
Social background: Universal
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