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  • 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
  • perplexity. ai 用于科研体验如何？ - 知乎
    先说说Perplexity Pro能干什么。 它是目前最好用的AI搜索引擎，没有之一。 你问它问题，它不仅给答案，还会标注来源。 Pro版本更狠：GPT-4、Claude、DeepSeek、Grok随便切换。 写代码用Claude，查资料用GPT，中文问题扔给DeepSeek。 连看病都可以用它的学术搜索功能反复确认治疗方案。 更重要的是，就在这
  • How to determine parameters for t-SNE for reducing dimensions?
    I will cite the FAQ from First for perplexity: How should I set the perplexity in t-SNE? The performance of t-SNE is fairly robust under different settings of the perplexity The most appropriate value depends on the density of your data Loosely speaking, one could say that a larger denser dataset requires a larger perplexity Typical values for the perplexity range between 5 and 50 For
  • Perplexity 指控亚马逊借法律威胁打压 Comet 浏览器，实际情况如何？ - 知乎
    Perplexity 指控亚马逊借法律威胁打压 Comet 浏览器，实际情况如何？ Perplexity AI指责亚马逊因Comet浏览器进行法律威胁，称其存在霸凌行为周二，Perplexity AI指责亚马逊“霸凌”其用户。 此前，这… 显示全部 关注者 1 被浏览
  • How to find the perplexity of a corpus - Cross Validated
    If I understand it correctly, this means that I could calculate the perplexity of a single sentence What does it mean if I'm asked to calculate the perplexity on a whole corpus?
  • 求通俗解释NLP里的perplexity是什么？ - 知乎
    所以在给定输入的前面若干词汇即给定历史信息后，当然语言模型等可能性输出的结果个数越少越好，越少表示模型就越知道对给定的历史信息 \ {e_1\cdots e_ {i-1}\} ，应该给出什么样的输出 e_i ，即 perplexity 越小，表示语言模型越好。
  • 最近用Poe和 Perplexity 比较多。试用了7天，还是给Perplexity 付了年费，成为了Pro会员，他们做的不错
    我也决定用Perplexity了，我平时用搜索引擎比较多，pplx几乎可以代替百度、谷歌。而且它也能使用gpt4和claude3opus，虽然听说上下文没有原版的那么长，原版200k它可能只有三四十k，但对我来说也基本够用了
  • machine learning - Why does lower perplexity indicate better . . .
    The perplexity, used by convention in language modeling, is monotonically decreasing in the likelihood of the test data, and is algebraicly equivalent to the inverse of the geometric mean per-word likelihood A lower perplexity score indicates better generalization performance I e, a lower perplexity indicates that the data are more likely
  • Perplexity AI - 知乎
    Perplexity AI 是一款结合大型语言模型和搜索引擎技术的人工智能搜索引擎，旨在为用户提供全面且准确的搜索结果。
  • Inferring the number of topics for gensims LDA - perplexity, CM, AIC . . .
    Having negative perplexity apparently is due to infinitesimal probabilities being converted to the log scale automatically by Gensim, but even though a lower perplexity is desired, the lower bound value denotes deterioration (according to this), so the lower bound value of perplexity is deteriorating with a larger number of topics in my figures





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