Git Product home page Git Product logo

Comments (2)

Re-bin avatar Re-bin commented on July 20, 2024 4

嗨，你好👋

感谢关注！这个是因为在SSLRec里面我们统一使用了all-rank（全排序）的测试方式，即对所有items进行排序，并且对top-k进行计算NDCG@K。在multi-behavior recommendation研究的原论文中（MATN, CML）, 一般不是all-rank的测试策略，测试样本是由1个positive item+99个negative item构成（参考代码209-215行），也就是100个items进行排序，然后对其中top-k进行计算指标。这个是产生差异的主要原因。

其次，可能模型超参数也会有所影响，目前我们是通过Retail Rocket数据集对多行为算法的超参数调到最优。不同的数据集对应的最优超参数可能也会有所不同。

然后回到您提出这个例子上面，全排序和100个items排序，直觉上来说后者这个测试策略下的指标会比前者更高一些。但只要所有的算法都在同一个策略下进行公平的性能测试，就可以保证公平性。

希望可以帮到你，如果有好的建议也欢迎随时反馈 :)

Best regards,
Xubin

from sslrec.

GKONGJ avatar GKONGJ commented on July 20, 2024 1

非常非常感谢您的快速回复！！很详细很清晰 我已经明白啦 也再次感谢您团队提供的代码对我的科研提供了极大的帮助 祝周末愉快！祝好~

from sslrec.

Related Issues (20)

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.