tab transformer pytorch

標籤變壓器

在 Pytorch 實現 Tab Transformer（表格資料的注意力網路）。這種簡單的架構與 GBDT 的效能相差無幾。

更新：Amazon AI 聲稱在現實世界的表格資料集（預測運輸成本）上透過 Attention 擊敗了 GBDT。

安裝

$ pip install tab-transformer-pytorch

用法

 import torch
import torch . nn as nn
from tab_transformer_pytorch import TabTransformer

cont_mean_std = torch . randn ( 10 , 2 )

model = TabTransformer (
    categories = ( 10 , 5 , 6 , 5 , 8 ),      # tuple containing the number of unique values within each category
    num_continuous = 10 ,                # number of continuous values
    dim = 32 ,                           # dimension, paper set at 32
    dim_out = 1 ,                        # binary prediction, but could be anything
    depth = 6 ,                          # depth, paper recommended 6
    heads = 8 ,                          # heads, paper recommends 8
    attn_dropout = 0.1 ,                 # post-attention dropout
    ff_dropout = 0.1 ,                   # feed forward dropout
    mlp_hidden_mults = ( 4 , 2 ),          # relative multiples of each hidden dimension of the last mlp to logits
    mlp_act = nn . ReLU (),                # activation for final mlp, defaults to relu, but could be anything else (selu etc)
    continuous_mean_std = cont_mean_std # (optional) - normalize the continuous values before layer norm
)

x_categ = torch . randint ( 0 , 5 , ( 1 , 5 ))     # category values, from 0 - max number of categories, in the order as passed into the constructor above
x_cont = torch . randn ( 1 , 10 )               # assume continuous values are already normalized individually

pred = model ( x_categ , x_cont ) # (1, 1) 

FT變壓器

Yandex 的這篇論文透過使用更簡單的方案來嵌入連續數值，對 Tab Transformer 進行了改進，如上圖所示，由這篇 reddit 文章提供。

包含在此儲存庫中只是為了方便與 Tab Transformer 進行比較

 import torch
from tab_transformer_pytorch import FTTransformer

model = FTTransformer (
    categories = ( 10 , 5 , 6 , 5 , 8 ),      # tuple containing the number of unique values within each category
    num_continuous = 10 ,                # number of continuous values
    dim = 32 ,                           # dimension, paper set at 32
    dim_out = 1 ,                        # binary prediction, but could be anything
    depth = 6 ,                          # depth, paper recommended 6
    heads = 8 ,                          # heads, paper recommends 8
    attn_dropout = 0.1 ,                 # post-attention dropout
    ff_dropout = 0.1                    # feed forward dropout
)

x_categ = torch . randint ( 0 , 5 , ( 1 , 5 ))     # category values, from 0 - max number of categories, in the order as passed into the constructor above
x_numer = torch . randn ( 1 , 10 )              # numerical value

pred = model ( x_categ , x_numer ) # (1, 1) 

無監督訓練

要進行本文中描述的無監督訓練類型，您可以先將類別標記轉換為適當的唯一 ID，然後在model.transformer上使用 Electra。

托多

• 考慮https://arxiv.org/abs/2203.05556

引文

 @misc { huang2020tabtransformer ,
    title   = { TabTransformer: Tabular Data Modeling Using Contextual Embeddings } ,
    author  = { Xin Huang and Ashish Khetan and Milan Cvitkovic and Zohar Karnin } ,
    year    = { 2020 } ,
    eprint  = { 2012.06678 } ,
    archivePrefix = { arXiv } ,
    primaryClass = { cs.LG }
}

 @article { Gorishniy2021RevisitingDL ,
    title   = { Revisiting Deep Learning Models for Tabular Data } ,
    author  = { Yu. V. Gorishniy and Ivan Rubachev and Valentin Khrulkov and Artem Babenko } ,
    journal = { ArXiv } ,
    year    = { 2021 } ,
    volume  = { abs/2106.11959 }
}

 @article { Zhu2024HyperConnections ,
    title   = { Hyper-Connections } ,
    author  = { Defa Zhu and Hongzhi Huang and Zihao Huang and Yutao Zeng and Yunyao Mao and Banggu Wu and Qiyang Min and Xun Zhou } ,
    journal = { ArXiv } ,
    year    = { 2024 } ,
    volume  = { abs/2409.19606 } ,
    url     = { https://api.semanticscholar.org/CorpusID:272987528 }
}