互联网流量分类在网络可见性,服务质量(QoS),入侵检测,经验质量(QOE)和交通趋势分析中起关键作用。为了提高隐私,完整性,机密性和协议混淆,当前的流量基于加密协议,例如SSL/TLS。随着文献中机器学习(ML)和深度学习(DL)模型的使用增加,由于缺乏标准化的框架,不同模型和方法之间的比较变得繁琐且困难。在本文中,我们提出了一个名为OSF-EIMTC的开源框架,该框架可以提供学习过程的完整管道。从著名的数据集到提取新的和知名的功能,它提供了著名的ML和DL模型(来自交通分类文献)的实现以及评估。这样的框架可以促进交通分类域的研究,从而使其更可重复,可重复,更易于执行,并可以更准确地比较知名和新颖的功能和新颖的功能和模型。作为框架评估的一部分,我们演示了可以使用多个数据集,模型和功能集的各种情况。我们展示了公开可用数据集的分析,并邀请社区使用OSF-EIMTC参与我们的公开挑战。
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互联网流量分类广泛用于促进网络管理。它在服务质量(QoS),经验质量(QOE),网络可见性,入侵检测和交通趋势分析中起着至关重要的作用。尽管没有理论上的保证,即基于深度学习的解决方案比经典的机器学习(ML)的解决方案更好,但基于DL的模型已成为常见默认值。本文比较了著名的基于DL和基于ML的模型,并表明,在恶意交通分类的情况下,最先进的基于DL的解决方案不一定优于基于经典的ML的解决方案。我们使用两个知名数据集来体现这一发现,用于各种任务,例如:恶意软件检测,恶意软件家庭分类,零日攻击的检测以及对迭代增长数据集的分类。请注意,评估所有可能的模型以做出具体陈述是不可行的,因此,上述发现不是避免基于DL的模型的建议,而是经验证明,在某些情况下,有更简单的解决方案,即更简单的解决方案,即可能表现更好。
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This work profoundly analyzes discrete self-supervised speech representations through the eyes of Generative Spoken Language Modeling (GSLM). Following the findings of such an analysis, we propose practical improvements to the discrete unit for the GSLM. First, we start comprehending these units by analyzing them in three axes: interpretation, visualization, and resynthesis. Our analysis finds a high correlation between the speech units to phonemes and phoneme families, while their correlation with speaker or gender is weaker. Additionally, we found redundancies in the extracted units and claim that one reason may be the units' context. Following this analysis, we propose a new, unsupervised metric to measure unit redundancies. Finally, we use this metric to develop new methods that improve the robustness of units clustering and show significant improvement considering zero-resource speech metrics such as ABX. Code and analysis tools are available under the following link.
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Prior works on improving speech quality with visual input typically study each type of auditory distortion separately (e.g., separation, inpainting, video-to-speech) and present tailored algorithms. This paper proposes to unify these subjects and study Generalized Speech Enhancement, where the goal is not to reconstruct the exact reference clean signal, but to focus on improving certain aspects of speech. In particular, this paper concerns intelligibility, quality, and video synchronization. We cast the problem as audio-visual speech resynthesis, which is composed of two steps: pseudo audio-visual speech recognition (P-AVSR) and pseudo text-to-speech synthesis (P-TTS). P-AVSR and P-TTS are connected by discrete units derived from a self-supervised speech model. Moreover, we utilize self-supervised audio-visual speech model to initialize P-AVSR. The proposed model is coined ReVISE. ReVISE is the first high-quality model for in-the-wild video-to-speech synthesis and achieves superior performance on all LRS3 audio-visual enhancement tasks with a single model. To demonstrates its applicability in the real world, ReVISE is also evaluated on EasyCom, an audio-visual benchmark collected under challenging acoustic conditions with only 1.6 hours of training data. Similarly, ReVISE greatly suppresses noise and improves quality. Project page: https://wnhsu.github.io/ReVISE.
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Dual encoders are now the dominant architecture for dense retrieval. Yet, we have little understanding of how they represent text, and why this leads to good performance. In this work, we shed light on this question via distributions over the vocabulary. We propose to interpret the vector representations produced by dual encoders by projecting them into the model's vocabulary space. We show that the resulting distributions over vocabulary tokens are intuitive and contain rich semantic information. We find that this view can explain some of the failure cases of dense retrievers. For example, the inability of models to handle tail entities can be explained via a tendency of the token distributions to forget some of the tokens of those entities. We leverage this insight and propose a simple way to enrich query and passage representations with lexical information at inference time, and show that this significantly improves performance compared to the original model in out-of-domain settings.
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Voice Conversion (VC) is the task of making a spoken utterance by one speaker sound as if uttered by a different speaker, while keeping other aspects like content unchanged. Current VC methods, focus primarily on spectral features like timbre, while ignoring the unique speaking style of people which often impacts prosody. In this study, we introduce a method for converting not only the timbre, but also prosodic information (i.e., rhythm and pitch changes) to those of the target speaker. The proposed approach is based on a pretrained, self-supervised, model for encoding speech to discrete units, which make it simple, effective, and easy to optimise. We consider the many-to-many setting with no paired data. We introduce a suite of quantitative and qualitative evaluation metrics for this setup, and empirically demonstrate the proposed approach is significantly superior to the evaluated baselines. Code and samples can be found under https://pages.cs.huji.ac.il/adiyoss-lab/dissc/ .
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Indonesia holds the second-highest-ranking country for the highest number of malaria cases in Southeast Asia. A different malaria parasite semantic segmentation technique based on a deep learning approach is an alternative to reduce the limitations of traditional methods. However, the main problem of the semantic segmentation technique is raised since large parasites are dominant, and the tiny parasites are suppressed. In addition, the amount and variance of data are important influences in establishing their models. In this study, we conduct two contributions. First, we collect 559 microscopic images containing 691 malaria parasites of thin blood smears. The dataset is named PlasmoID, and most data comes from rural Indonesia. PlasmoID also provides ground truth for parasite detection and segmentation purposes. Second, this study proposes a malaria parasite segmentation and detection scheme by combining Faster RCNN and a semantic segmentation technique. The proposed scheme has been evaluated on the PlasmoID dataset. It has been compared with recent studies of semantic segmentation techniques, namely UNet, ResFCN-18, DeepLabV3, DeepLabV3plus and ResUNet-18. The result shows that our proposed scheme can improve the segmentation and detection of malaria parasite performance compared to original semantic segmentation techniques.
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Large language models (LLMs) have been shown to be able to perform new tasks based on a few demonstrations or natural language instructions. While these capabilities have led to widespread adoption, most LLMs are developed by resource-rich organizations and are frequently kept from the public. As a step towards democratizing this powerful technology, we present BLOOM, a 176B-parameter open-access language model designed and built thanks to a collaboration of hundreds of researchers. BLOOM is a decoder-only Transformer language model that was trained on the ROOTS corpus, a dataset comprising hundreds of sources in 46 natural and 13 programming languages (59 in total). We find that BLOOM achieves competitive performance on a wide variety of benchmarks, with stronger results after undergoing multitask prompted finetuning. To facilitate future research and applications using LLMs, we publicly release our models and code under the Responsible AI License.
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超参数优化是识别给定的机器学习模型的适当的超参数配置的过程。对于较小的数据集,可以进行详尽的搜索;但是,当数据大小和模型复杂性增加时,配置评估的数量成为主要计算瓶颈。解决此类问题的有希望的范式是基于替代物的优化。此范式基础的主要思想考虑了超参数空间与输出(目标)空间之间关系的增量更新模型;该模型的数据是通过评估主学习引擎来获得的,例如基于计算机的模型。通过学习近似超参数目标关系,可以使用替代(机器学习)模型来评分大量的超参数配置,并探索除直接机器学习引擎评估的配置空间的一部分。通常,在优化初始化之前选择替代物,并且在搜索过程中保持不变。我们调查了在优化本身期间代孕物质的动态切换是否是选择最合适的基于计算机的大规模在线推荐的最合适的分解模型的实用相关性的明智概念。我们对包含数亿个实例的数据集进行了基准测试,以针对既定基线,例如随机森林和高斯基于过程的替代物。结果表明,替代转换可以提供良好的性能,同时考虑学习引擎评估较少。
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在多模式的行动识别中,重要的是,不仅要考虑不同方式的互补性,而且考虑全球动作内容。在本文中,我们提出了一个名为Modital Mixer(M-Mixer)网络的新颖网络,以利用跨模态和动作的时间上下文的互补信息进行多模式动作识别。我们还引入了一个简单而有效的复发单元,称为多模式上下文化单元(MCU),该单元(MCU)是M-Mixer的核心组成部分。我们的MCU在时间上编码具有其他模态的动作内容特征(例如Depth,ir)的动作内容特征。该过程鼓励M-Mixer利用全球行动内容,并补充其他模式的互补信息。结果,我们提出的方法优于NTU RGB+D 60,NTU RGB+D 120和NW-UCLA数据集的最先进方法。此外,我们通过进行全面的消融研究来证明M混合物的有效性。
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