展示HN：Cerno – 旨在针对LLM推理能力而非人类生物学的验证码

展示HN：Cerno – 旨在针对LLM推理能力而非人类生物学的验证码
Show HN: Cerno – CAPTCHA that targets LLM reasoning, not human biology

切向速度在60Hz重采样轨迹上的标准差。路径效率：欧几里得起点到终点的距离除以实际路径长度。暂停次数：速度小于0.0005持续≥100毫秒的时间间隔。与迷宫决策点相关。运动起始时间：从第一个事件到首次超过阈值的显著运动的时间。加加速度标准差：位置三阶导数的标准差。角速度熵：在16个角度箱中方向变化的香农熵。时间变异系数：原始事件间间隔的变异系数。在重采样前计算。

对不起。

velocity_stdStandard deviation of tangential velocity across 60Hz resampled trajectory.

path_efficiencyEuclidean start-to-exit distance divided by actual path length.

pause_countIntervals where velocity < 0.0005 for ≥ 100ms. Correlated with maze decision points.

movement_onset_msTime from first event to first significant movement above threshold.

jerk_stdStandard deviation of the third derivative of position.

angular_velocity_entropyShannon entropy of direction changes across 16 angular bins.

timing_cvCoefficient of variation of raw inter-event intervals. Computed pre-resampling.

展示HN：Cerno – 旨在针对LLM推理能力而非人类生物学的验证码 Show HN: Cerno – CAPTCHA that targets LLM reasoning, not human biology

展示HN：Cerno – 旨在针对LLM推理能力而非人类生物学的验证码
Show HN: Cerno – CAPTCHA that targets LLM reasoning, not human biology