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RSS订阅原创 focal loss在ocr seq2seq中文文字识别模型中应用思考
一、简介 focal loss是有微软resnet的研究者何恺明提出的，论文地址（https://arxiv.org/pdf/1708.02002.pdf），其主要是为了解决目标检测中目标与背景样本不均衡问题而提出的。ocr中文文字识别同样有样本不均衡问题，一些生僻字经常会识别错误。而seq2seq是一种基于时序的模型，在ocr中文识别中也会应用到。 本文主要介绍用focal loss进行基于seq2seq的中文文字识别的一些失败应用及原因分析。二、基于focal loss...
2020-12-16 14:59:51
429
转载 关于学习机器学习入门网上资料总结
看过的视频教程有http://open.163.com/special/opencourse/machinelearning.html 讲了梯度下降、svm等知识的介绍，里面的讲义也很好http://speech.ee.ntu.edu.tw/~tlkagk/courses.html台湾李宏毅教授讲的神经网络，深度学习的视频教程人脸识别论文https://arxiv.org/abs/
2017-07-15 09:52:38
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Linux设备驱动第三版
This is, on the surface, a book about writing device drivers for the Linux system.
That is a worthy goal, of course; the flow of new hardware products is not likely to
slow down anytime soon, and somebody is going to have to make all those new gadgets
work with Linux. But this book is also about how the Linux kernel works and
how to adapt its workings to your needs or interests. Linux is an open system; with
this book, we hope, it is more open and accessible to a larger community of developers.
This is the third edition of Linux Device Drivers. The kernel has changed greatly
since this book was first published, and we have tried to evolve the text to match.
This edition covers the 2.6.10 kernel as completely as we are able. We have, this time
around, elected to omit the discussion of backward compatibility with previous kernel
versions. The changes from 2.4 are simply too large, and the 2.4 interface
remains well documented in the (freely available) second edition.
This edition contains quite a bit of new material relevant to the 2.6 kernel. The discussion
of locking and concurrency has been expanded and moved into its own
chapter. The Linux device model, which is new in 2.6, is covered in detail. There are
new chapters on the USB bus and the serial driver subsystem; the chapter on PCI has
also been enhanced. While the organization of the rest of the book resembles that of
the earlier editions, every chapter has been thoroughly updated.
We hope you enjoy reading this book as much as we have enjoyed writing it.
2010-02-06
The_GNU_C_Library_Reference_Manual
The GNU C library, described in this document, de nes all of the library functions that
are speci ed by the ISO C standard, as well as additional features speci c to POSIX and
other derivatives of the Unix operating system, and extensions speci c to the GNU system.
The purpose of this manual is to tell you how to use the facilities of the GNU library.
We have mentioned which features belong to which standards to help you identify things
that are potentially non-portable to other systems. But the emphasis in this manual is not
on strict portability.
2010-02-06
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