Comments (4)
1.对比学习在这里比较难以调优,于是进行了清除
2.对比学习使用正样本的分数/总的样本分数,所以利用y进行索引正样本,这里是一种计算技巧,你可以带入一些case计算一下,结果没问题
from inttower.
谢谢你的 解答, 另外最近又发现一个现象 就是比如dssm 或者 inttower 训完一个movielens的双塔模型后 得到所有user 和 item的 embedding,然后可以item之间算similarity 或者算user-item的similarity, 然后我发现 排在前面的cos_sim都是1.0 或者0.99x, 这样的打分有很多, 远远超过正样本的数量 感觉不太正常? 然后全movie 的召回 最后指标也比较差
from inttower.
谢谢你的 解答, 另外最近又发现一个现象 就是比如dssm 或者 inttower 训完一个movielens的双塔模型后 得到所有user 和 item的 embedding,然后可以item之间算similarity 或者算user-item的similarity, 然后我发现 排在前面的cos_sim都是1.0 或者0.99x, 这样的打分有很多, 远远超过正样本的数量 感觉不太正常? 然后全movie 的召回 最后指标也比较差
ranking的AUC指标是没问题的, 但是既然是双塔 我就想试试召回 发现结果比较奇怪
from inttower.
这个模型是用于粗排的,用的point wise的loss,召回双塔建议使用负采样以及使用pair wise的loss
from inttower.
Related Issues (9)
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
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.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from inttower.