基于 (jī yú) means 'based on, on the basis of', used in formal writing to state the factual or logical foundation for an action or conclusion. It is similar to 依据 (yī jù) but 基于 is more common in general academic and technical contexts, while 依据 is often used with laws, rules, or evidence. Unlike 鉴于 (jiàn yú, 'in view of, considering'), which evaluates a situation to justify a decision, 基于 simply grounds a statement in data or facts.