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2021 13th International Conference on Machine Learning and Computing最新文献

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Applying Neural Network to Reconstruction of Phylogenetic Tree 应用神经网络重建系统发育树
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457704
T. Zhu, Yunpeng Cai
Reconstruction of phylogenetic tree from biological sequences is a fundamental step in molecular biology, but it is computationally exhausting. Our goal is to use neural network to learn the heuristic strategy of phylogenetic tree reconstruction algorithm. We propose an attention model to learn heuristic strategies for constructing circular ordering related to phylogenetic trees. We use alignment-free K-mer frequency vector representation to represent biological sequences and use unlabeled sequence data sets to train attention model through reinforcement learning. Comparing with traditional methods, our approach is alignment-free and can be easily extended to large-scale data with computational efficiency. With the rapid growth of public biological sequence data, our method provides a potential way to reconstruct phylogenetic tree.
从生物序列中重建系统发育树是分子生物学的一个基本步骤,但它的计算量非常大。我们的目标是利用神经网络学习启发式策略的系统发育树重建算法。我们提出了一个注意模型来学习启发式策略来构建与系统发育树相关的循环排序。我们使用无对齐K-mer频率向量表示来表示生物序列,并使用未标记的序列数据集通过强化学习来训练注意力模型。与传统方法相比,该方法不需要对齐,并且可以很容易地扩展到大规模数据,计算效率高。随着公共生物序列数据的快速增长,该方法为重建系统发育树提供了一种潜在的方法。
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引用次数: 5
Amplified Noise Map Guided Network for Low-Light Image Enhancement 弱光图像增强的放大噪声映射引导网络
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457731
Kai Xu, Huaian Chen, Yi Jin, Chang'an Zhu
Low-light image is easily degraded by real noise, which brings great challenges for image enhancement task because the enhancement process will amplify the noise. To address this problem, we propose an amplified noise map guided network (AMG-Net), which simultaneously achieves the low-light enhancement and noise removal by extracting amplified noise map to guide the network training. Specifically, we build an encoder-decoder network as the basic enhancement model to get a preliminary enhanced image that usually includes amplified noise. Subsequently, we fed the preliminary enhanced image into a noise map estimator to continuously estimating the amplified noise map during the enhancement process by adopting residual connection. Finally, a residual block with adaptive instance normalization (AIN) is used to build a denoising model, which is guided by the noise map estimator to remove the amplified noise. Extensive experimental results demonstrate that the proposed AMG-Net can achieve competitive results compared with the existing state-of-the-art methods.
弱光图像容易受到真实噪声的影响,增强过程会放大噪声,给图像增强任务带来很大的挑战。为了解决这一问题,我们提出了一种放大噪声图引导网络(AMG-Net),该网络通过提取放大噪声图来指导网络训练,同时实现弱光增强和去噪。具体而言,我们构建了一个编码器-解码器网络作为基本增强模型,以获得通常包含放大噪声的初步增强图像。随后,我们将初步增强后的图像输入到噪声图估计器中,利用残差连接对增强过程中放大后的噪声图进行连续估计。最后,采用自适应实例归一化残差块(AIN)建立去噪模型,在噪声映射估计器的引导下去除放大后的噪声。大量的实验结果表明,与现有的最先进的方法相比,所提出的AMG-Net可以取得具有竞争力的结果。
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引用次数: 0
A Redundancy Based Unsupervised Feature Selection Method for High-Dimensional Data 基于冗余的高维数据无监督特征选择方法
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457725
Jian Zhou, Ding Liu
Feature selection is a process to select key features from the initial feature set. It is commonly used as a preprocessing step to improve the efficiency and accuracy of a classification model in artificial intelligence and machine learning domains. This paper proposes a redundancy based unsupervised feature selection method for high-dimensional data called as RUFS. Firstly, RUFS roughly descending order the features by the average SU with the other features. Secondly, RUFS orderly check each feature to decide whether it is redundant or not. Finally, it selects the proper feature subset by repeating the second step until all the features are checked. After key features are selected, the research implements classifiers to check the quality of the selected feature subset. Compared with the other existing methods, the proposed RUFS method improves the mean classification of 11 real datasets by 8.1 percent at least.
特征选择是从初始特征集中选择关键特征的过程。在人工智能和机器学习领域,它通常被用作提高分类模型效率和准确性的预处理步骤。提出了一种基于冗余的高维数据无监督特征选择方法,称为RUFS。首先,RUFS根据与其他特征的平均SU大致降序排列特征。其次,RUFS对每个特征进行有序检查,判断其是否冗余。最后,它通过重复第二步来选择合适的特征子集,直到检查完所有的特征。在选择关键特征后,研究实现分类器来检查所选特征子集的质量。与其他现有方法相比,所提出的RUFS方法对11个真实数据集的平均分类精度至少提高了8.1%。
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引用次数: 0
Distant Supervision for Relation Extraction via Noise Filtering 基于噪声滤波的远程监督关系提取
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457743
Jing Chen, Zhiqiang Guo, Jie Yang
As a widely used method in relation extraction at the present stage suggests, distant supervision is affected by label noise. The data noise is introduced artificially due to the theory and the performance of distant supervision will be restricted during the modeling process. To solve this problem on the sentence level, the task of relation extraction in our project is modeled with two parts: sentence selector and relation extractor. Sentence selector, based on the theory of reinforcement learning, processes the corpus in units of entity pairs. The training corpus is divided into three parts including selected sentences, discarded sentences, and unlabeled sentences. We try to obtain more semantic information of the training corpus by introducing the intra-class attention and inter-class similarity. To make the operation of filtering noise data more accurate, this model evaluates the predicted value produced by the relation extractor between the selected and discarded sentences in the sentence package. The result shows that the redesigned reinforcement learning algorithm WPR-RL in this study can significantly improve the deficiencies of the existing approach. At the same time, we also carry out a number of composite tests to discuss the impact of each improvement on the performance of the model.
作为现阶段广泛使用的一种关系提取方法,远程监督受到标签噪声的影响。由于理论的原因,人为地引入了数据噪声,在建模过程中会限制远程监督的性能。为了在句子层面上解决这一问题,本课题的关系抽取任务分为句子选择器和关系抽取器两部分进行建模。句子选择器基于强化学习理论,以实体对为单位对语料库进行处理。训练语料库分为三个部分,包括选择句、丢弃句和未标记句。我们通过引入类内关注和类间相似度来获取更多的训练语料库的语义信息。为了使过滤噪声数据的操作更加准确,该模型对句子包中选择的句子和丢弃的句子之间的关系提取器产生的预测值进行评估。结果表明,本研究中重新设计的强化学习算法WPR-RL可以显著改善现有方法的不足。同时,我们还进行了一些复合测试,讨论每次改进对模型性能的影响。
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引用次数: 4
Applications of Machine Learning Techniques in Genetic Circuit Design 机器学习技术在遗传电路设计中的应用
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457683
Jiajie Zhu, Qi Zhang, B. Forouraghi, Xiao Wang
Construction of mathematical models to investigate genetic circuit design is a powerful technique in synthetic biology with real-world applications in biomanufacturing and biosensing. The challenge of building such models is to accurately discover flow of information in simple as well as complex biological systems. However, building synthetic biological models is often a time-consuming process with relatively low prediction accuracy for highly complex genetic circuits. The primary goal of this study was to investigate the utility of various machine learning (ML) techniques to accurately construct mathematical models for predicting gene expressions in genetic circuit designs. Specifically, classification and regressions models were built using Random Forrest (RF), Support Vector Machines (SVM), and Artificial Neural Networks (ANN). The obtained accuracy of the regression model using RF and ANN yielded R2 scores of 0.97 and 0.95, respectively, compared to the best score of 0.63 obtained in an earlier study. Furthermore, a classifier model was built using the green fluorescent protein (GFP) measurements obtained from the experiments conducted in this work. Biologists use GFP as an indicator of gene expression, enabling easy measurement of its protein level in the living cells. The measured GFP values were predicted with 100% accuracy by both RF and ANN classifier models while identifying various synthetic gene circuit patterns. The paper also highlights importance of the relevant data preparation techniques to ensure high accuracy is obtained by the utilized ML models.
构建数学模型来研究遗传电路设计是合成生物学中一项强大的技术,在生物制造和生物传感领域有着广泛的应用。建立这种模型的挑战在于准确地发现简单和复杂生物系统中的信息流。然而,对于高度复杂的遗传电路,构建合成生物学模型往往是一个耗时且预测精度相对较低的过程。本研究的主要目的是研究各种机器学习(ML)技术的效用,以准确地构建预测遗传电路设计中基因表达的数学模型。具体而言,使用随机Forrest (RF),支持向量机(SVM)和人工神经网络(ANN)建立分类和回归模型。采用射频和人工神经网络的回归模型得到的精度R2分别为0.97和0.95,较早的研究得到的最佳精度R2为0.63。此外,使用从本工作中进行的实验中获得的绿色荧光蛋白(GFP)测量值建立了分类器模型。生物学家使用GFP作为基因表达的指标,使其在活细胞中的蛋白水平易于测量。在识别各种合成基因电路模式的同时,RF和ANN分类器模型预测GFP值的准确率均为100%。本文还强调了相关数据准备技术的重要性,以确保所使用的ML模型获得较高的准确性。
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引用次数: 1
SC-DGCN: Sentiment Classification Based on Densely Connected Graph Convolutional Network SC-DGCN:基于密集连通图卷积网络的情感分类
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457724
Renhao Zhao, Menghan Wang, Qiong Yin, Chao Chen
Recently, various neural network frameworks have achieved good results in sentiment classification task, such as Recurrent Neural Networks (RNN) and Convolutional Neural Networks (CNN). However, these methods only take into account semantic information in local contexts and ignore the global syntactic structure information due to the network structure. To solve this problem, we propose a novel neural architecture called SC-DGCN that combines Graph Convolutional Network (GCN) and Bi-LSTM. In SC-DGCN model, we utilize a GCN over the dependency tree of a sentence to exploit syntactical information and words dependencies. In addition, we further introduce dense connection strategy into GCN blocks to aggregate more syntactic information from neighbors and multi-hops in the dependency tree, and employ attention mechanism to generate the final representation of text. Our proposed SC-DGCN model can automatically extract semantic feature in local contexts and the global syntactic structure feature. A series of experiments on MR and SST datasets also indicate that our model is effective for sentiment classification task.
近年来,各种神经网络框架在情感分类任务中都取得了很好的效果,如递归神经网络(RNN)和卷积神经网络(CNN)。然而,由于网络结构的原因,这些方法只考虑了局部上下文的语义信息,而忽略了全局的句法结构信息。为了解决这个问题,我们提出了一种新的神经网络架构SC-DGCN,它结合了图卷积网络(GCN)和Bi-LSTM。在SC-DGCN模型中,我们利用句子依赖树上的GCN来挖掘句法信息和单词依赖关系。此外,我们进一步在GCN块中引入密集连接策略,从依赖树的邻居和多跳中聚合更多的语法信息,并采用注意机制生成文本的最终表示。我们提出的SC-DGCN模型可以自动提取局部上下文的语义特征和全局语法结构特征。在MR和SST数据集上的一系列实验也表明,我们的模型对情感分类任务是有效的。
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引用次数: 1
Unsupervised Super Resolution Reconstruction of Traffic Surveillance Vehicle Images 交通监控车辆图像的无监督超分辨率重建
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457734
Yaoyuan Liang
The surveillance of public transportation is of great significance to improve public safety. However, the low resolution of vehicle images becomes a bottleneck in real scenarios. Since high-low resolution vehicle images pairs are not available in traffic surveillance scenarios, this paper aims to study the problem of unsupervised super-resolution to reconstruct the high quality vehicle image. Most of the existing super-resolution algorithms adopt pre-defined down-sampling methods for paired training, however, the models trained in this pattern cannot achieve the expected results in traffic surveillance scenarios. Therefore, we propose a super-resolution method that does not require paired data, and raise a novel down-sampling network to generate low-resolution images of vehicles close to the real-world data, and then utilize the synthesized pairs for pair-wise training. Our extensive experiments on private real-world dataset Vehicle5k demonstrate the advantages of the proposed approach over baseline approaches.
公共交通监控对提高公共安全具有重要意义。然而,车辆图像的低分辨率成为实际应用的瓶颈。由于在交通监控场景中缺乏高、低分辨率的车辆图像对,本文旨在研究无监督超分辨率问题,以重建高质量的车辆图像。现有的超分辨率算法大多采用预定义的下采样方法进行配对训练,但在交通监控场景中,按照这种方式训练的模型无法达到预期的效果。因此,我们提出了一种不需要配对数据的超分辨率方法,并提出了一种新的下采样网络来生成接近真实数据的低分辨率车辆图像,然后利用合成的对进行成对训练。我们在私人真实世界数据集Vehicle5k上的大量实验证明了所提出的方法优于基线方法。
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引用次数: 2
Graph Networks as Learnable Engines for Relations Inference of Interacting Financial Systems 图网络作为交互金融系统关系推断的可学习引擎
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457713
Jiayu Pi, Yuan Deng
Although the heterogeneous of financial markets is attracting interest both among scholars and practitioners, however, attention was almost exclusively given to networks in which all individuals were treated indifference, while neglecting all the extra information about the context-related or temporal-spatial properties of the interactions under study. Here introduces a new learnable relation inference model—based on graph networks—which implements an inference for entity- and relation-centric representations of multilayer, dynamical systems. The results show that as a learnable model, the approach supports accurate predictions from real and simulated data.
尽管金融市场的异质性吸引了学者和从业者的兴趣,但是,人们的注意力几乎完全集中在所有个体都被冷漠对待的网络上,而忽略了所有关于所研究的相互作用的上下文相关或时空特性的额外信息。本文介绍了一种新的基于图网络的可学习关系推理模型,该模型实现了对多层动态系统的实体中心和关系中心表示的推理。结果表明,作为一种可学习的模型,该方法支持对真实和模拟数据的准确预测。
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引用次数: 0
A Model for Text Line Segmentation and Classification in Printed Documents 打印文档中文本行分割与分类模型
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457760
Xin Wang, Jun Guo
In this paper, we propose a new model for text line segmentation and classification, which consists of convolutional and two-layer bi-directional long short-term memory (BiLSTM) networks. Trained on the synthetic text dataset, it performs excellently when predicting the real data. Without labelling every line on the real data, a generalized standard for evaluating the accuracy is proposed. We also propose a simplified IoU loss to improve the execution speed greatly. In the experiments, it achieves 98.1% line segmentation accuracy and 99.5% classification accuracy on the English fiction Pride and Prejudice by Jane Austen, and achieves 98.5% line segmentation accuracy and 99.7% classification accuracy on the The Secret Of Plato's Atlantis by John Arundell, outperforming the traditional methods. Furthermore, for 1024 × 724 input samples, it gets 2.95 FPS speed when using a Tesla K80 GPU. Index Terms—Text line segmentation, Text classification, Synthetic text, BiLSTM, Convolutional network.
本文提出了一种新的文本行分割和分类模型,该模型由卷积和双层双向长短期记忆(BiLSTM)网络组成。在合成文本数据集上训练,它在预测真实数据时表现出色。在不标注实际数据上的每条线的情况下,提出了一种评估准确性的通用标准。我们还提出了简化的IoU损失,以大大提高执行速度。在实验中,该方法对简·奥斯汀的英文小说《傲慢与偏见》实现了98.1%的线分割准确率和99.5%的分类准确率,对约翰·阿伦德尔的《柏拉图的亚特兰蒂斯的秘密》实现了98.5%的线分割准确率和99.7%的分类准确率,优于传统方法。此外,当使用Tesla K80 GPU时,对于1024 × 724个输入样本,它可以获得2.95 FPS的速度。索引术语:文本线分割,文本分类,合成文本,BiLSTM,卷积网络。
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引用次数: 1
Interpretable Robust Feature Selection via Joint -Norms Minimization 基于联合规范最小化的可解释鲁棒特征选择
Pub Date : 2021-02-26 DOI: 10.1145/3457682.3457693
Jingjing Lu, Shuangyan Yi, Jiaoyan Zhao, Yongsheng Liang, Wei Liu
Dimension reduction is a hot topic in data processing field. The challenge lies in how to find a suitable feature subset in low-dimensional space to accurately summarize the important information in high-dimensional space, rather than redundant information or noise. This requires the proposed model to reasonably explain the importance of features and be robust to noise. In order to solve this problem, this paper proposes an interpretable robust feature selection method, in which both the reconstruction error term and the regularization term are constrained by -norm. The reconstruction error term can capture samples corroded by noise, while the regular term automatically finds a group of discriminative features on relatively clean samples. Experimental results show the effectiveness of the proposed method, especially on noise data sets.
降维是数据处理领域的一个热点问题。挑战在于如何在低维空间中找到合适的特征子集,准确地总结高维空间中的重要信息,而不是冗余信息或噪声。这就要求所提出的模型能够合理地解释特征的重要性,并且对噪声具有鲁棒性。为了解决这一问题,本文提出了一种可解释的鲁棒特征选择方法,其中重构误差项和正则化项都受到-范数约束。重构误差项可以捕获被噪声腐蚀的样本,而正则项可以在相对干净的样本上自动找到一组判别特征。实验结果表明了该方法的有效性,特别是在噪声数据集上。
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引用次数: 5
期刊
2021 13th International Conference on Machine Learning and Computing
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