如何评价perplexity ai，会是未来搜索的趋势吗？ - 知乎 只有没深入用过的才吹这玩意儿，perplexity模型掺假，引用的信源质量低，deep research幻觉极其严重。 搜索领域谷歌的地位根本无法被撼动，ai studio里的grounding with google search那引用质量就爆了perplexity三条街。上周拼多多发财报前我想整理它2023Q4到2024Q3的财报数据，perplexity无论是用o3 mini还是sonnet 3 7
intuition - What is perplexity? - Cross Validated I came across term perplexity which refers to the log-averaged inverse probability on unseen data Wikipedia article on perplexity does not give an intuitive meaning for the same This perplexity
clustering - Why does larger perplexity tend to produce clearer . . . Why does larger perplexity tend to produce clearer clusters in t-SNE? By reading the original paper, I learned that the perplexity in t-SNE is $2$ to the power of Shannon entropy of the conditional distribution induced by a data point