arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.02548cs.CVcs.LG
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基于解释的笔迹鉴别

Explanation based Handwriting Verification

State University of New York at Buffalo(纽约州立大学布法罗分校)

Mihir Chauhan, Mohammad Abuzar Shaikh, Sargur N. Srihari

摘要:

深度学习系统存在输出不具有解释性的缺点。在法庭笔迹鉴定等领域,向陪审员提供解释是必不可少的.笔迹鉴别的目标是确定给定的手写样本是由同一作者还是不同作者书写的置信度,本文提出了一种利用卷积神经网络(CNN)将输入图像映射到专家提供的15个注释(特征)来生成置信度解释的方法。我们的系统包括:(1)特征学习网络(FLN),一个微分系统,(2)推理模块提供解释。此外,推理模块还提供了两种解释:(a)基于各特征的分类概率之间的余弦相似性,(b)基于对数似然比(LLR)的有向概率图模型。我们使用特征学习网络(FLN)和每个推理模块的组合进行实验。我们使用XAI-AND数据集评估我们的系统,该数据集包含13700个手写样本和每个样本的15个相应的专家检查特征。该数据集被发布供公众使用,该方法可以扩展到其他验证任务,如人脸验证和生物医学比较。该数据集可以作为未来基于解释的笔迹验证研究的基础和基准。代码可以在github上找到。

英文摘要:

Deep learning system have drawback that their output is not accompanied with ex-planation. In a domain such as forensic handwriting verification it is essential to provideexplanation to jurors. The goal of handwriting verification is to find a measure of confi-dence whether the given handwritten samples are written by the same or different writer.We propose a method to generate explanations for the confidence provided by convolu-tional neural network (CNN) which maps the input image to 15 annotations (features)provided by experts. Our system comprises of: (1) Feature learning network (FLN),a differentiable system, (2) Inference module for providing explanations. Furthermore,inference module provides two types of explanations: (a) Based on cosine similaritybetween categorical probabilities of each feature, (b) Based on Log-Likelihood Ratio(LLR) using directed probabilistic graphical model. We perform experiments using acombination of feature learning network (FLN) and each inference module. We evaluateour system using XAI-AND dataset, containing 13700 handwritten samples and 15 cor-responding expert examined features for each sample. The dataset is released for publicuse and the methods can be extended to provide explanations on other verification taskslike face verification and bio-medical comparison. This dataset can serve as the basis and benchmark for future research in explanation based handwriting verification. The code is available on github.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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