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Order-Preserving Wasserstein Discriminant Analysis

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                              Order-Preserving Wasserstein Discriminant Analysis1. Introduction.This package includes the prototype MATLAB and Python codes for experiments on the ChaLearn dataset, described in"Order-Preserving Wasserstein Discriminant Analysis", Bing Su, Jiahuan Zhou, and Ying Wu. ICCV, 2019.2.  Usage & Dependency.- LinearOWDA  Dependency:     vlfeat-0.9.18     libsvm-3.20     liblinear-1.96    tested under Windows 7 x64, Matlab R2015b.  Usage:     1. Download the folder "datamat" from "https://pan.baidu.com/s/1mjkonfeJMojoUGnMNYpXpw" and put it under this folder "LinearOWDA", which contains the organized version of the 100-dimensional frame-wide features provided in "https://bitbucket.org/bfernando/videodarwin" (described in "B. Fernando, E. Gavves, J. O. M., A. Ghodrati, and T. Tuytelaars,¡°Modeling video evolution for action recognition,¡± CVPR, 2015.");      2. Add the installation paths of the packages at the beginning of "EvaluateOPWDA.m" below "TODO: add path";     3. Run the main code in Matlab:        EvaluateOPWDA- DeepOWDA  Dependency:     vlfeat-0.9.21     libsvm-3.23     liblinear-2.21     Python     Keras with the Theano backend  tested under Linux Ubuntu 16.04.2, Matlab R2018a.  Usage:     1. Download the folder "datamat" from "https://pan.baidu.com/s/1mjkonfeJMojoUGnMNYpXpw" and put it under this folder "DeepOWDA", which contains the organized version of the 100-dimensional frame-wide features provided in "https://bitbucket.org/bfernando/videodarwin" (described in "B. Fernando, E. Gavves, J. O. M., A. Ghodrati, and T. Tuytelaars,¡°Modeling video evolution for action recognition,¡± CVPR, 2015.");     2. Add the installation paths of the packages at the beginning of "EvaluateDeepOPWDA_ChaLearn.m" below "TODO: add path"; Modify all absolute paths in (.py and .m) codes to your custom paths;     3. Run the main code in Matlab:        EvaluateDeepOPWDA_ChaLearn 3. License & disclaimer.    The codes and data can be used for research purposes only. This package is strictly for non-commercial academic use only.4. Notice1) We utilized or adapted some toolboxes, data, and codes, such ashttps://github.com/bobye/WBC_Matlab,https://github.com/gpeyre/2014-SISC-BregmanOT,https://github.com/VahidooX/DeepLDA,https://bitbucket.org/bfernando/videodarwin, which are all publicly available. Please also check the license of them if you want to make use of this package.2) On a new dataset, if the prompt 'NaN distance!' appears or nan loss occurs, it means that when calculating the OPW distance, some intermediate entries on denominator exceeds the machine-precisionlimit. You may need to adjust the parameters of the OPW distance (often reduce the value of lambda_1), and/or normalize, scale, or centralize the input features in sequences.5. CitationsPlease cite the following papers if you use the codes:Bing Su, Jiahuan Zhou, and Ying Wu, "Order-Preserving Wasserstein Discriminant Analysis," IEEE International Conference on Computer Vision, 2019.

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