Last Updated
：2025/12/05
Cramér-Rao bound
Noun
Japanese Meaning
クラメル・ラオの下限 / 統計学・推定理論において、不偏推定量（未知のパラメータを推定する際のバイアスのない推定値）が持つ分散の下限値 / 不偏推定量の分散に対する理論上の最低限の値を示す境界
（ plural ）
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(estimation theory, statistics) A lower bound on the variance of unbiased estimators of a deterministic (fixed, though unknown) parameter.
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Cramér-Rao bound
When designing an unbiased estimator for a parameter, you should compare its variance to the Cramér-Rao bound to determine how close it is to the theoretical optimum.
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When designing an unbiased estimator for a parameter, you should compare its variance to the Cramér-Rao bound to determine how close it is to the theoretical optimum.
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