With the development of technology and sharing economy, Airbnb as a famous short-term rental platform, has become the first choice for many young people to select. The issue of Airbnb's pricing has always been a problem worth studying. While the previous studies achieve promising results, there are exists deficiencies to solve. Such as, (1) the feature attributes of rental are not rich enough; (2) the research on rental text information is not deep enough; (3) there are few studies on predicting the rental price combined with the point of interest(POI) around the house. To address the above challenges, we proposes a multi-source information embedding(MSIE) model to predict the rental price of Airbnb. Specifically, we first selects the statistical feature to embed the original rental data. Secondly, we generates the word feature vector and emotional score combination of three different text information to form the text feature embedding. Thirdly, we uses the points of interest(POI) around the rental house information generates a variety of spatial network graphs, and learns the embedding of the network to obtain the spatial feature embedding. Finally, this paper combines the three modules into multi source rental representations, and uses the constructed fully connected neural network to predict the price. The analysis of the experimental results shows the effectiveness of our proposed model.
translated by 谷歌翻译
病理学家需要结合不同染色病理切片的信息,以获得准确的诊断结果。可变形图像配准是融合多模式病理切片的必要技术。本文提出了一个基于混合特征的基于特征的可变形图像登记框架,用于染色的病理样品。我们首先提取密集的特征点,并通过两个深度学习功能网络执行匹配点。然后,为了进一步减少虚假匹配,提出了一种结合隔离森林统计模型和局部仿射校正模型的异常检测方法。最后,插值方法基于上述匹配点生成用于病理图像注册的DVF。我们在非刚性组织学图像注册(ANHIR)挑战的数据集上评估了我们的方法,该挑战与IEEE ISBI 2019会议共同组织。我们的技术的表现使传统方法的平均水平注册目标误差(RTRE)达到0.0034。所提出的方法实现了最先进的性能,并在评估测试数据集时将其排名1。提出的基于特征的混合特征的注册方法可能会成为病理图像注册的可靠方法。
translated by 谷歌翻译
我们提出了一种新颖的有效方法,用于通过几何拓扑来解决全球点云注册问题。基于许多点云成对注册方法(例如ICP),我们关注沿任何循环的转换组成的累积误差问题。本文的主要技术贡献是仅使用泊松方程式消除错误的线性方法。我们从Hodge-Helmhotz分解定理和在现实世界场景的多个RGBD数据集中进行了实验,证明了我们方法的一致性。实验结果还表明,我们的全球注册方法运行迅速并提供准确的重建。
translated by 谷歌翻译
激活压缩训练〜(ACT)已被证明是减少训练深神经网络中记忆消耗的一种有希望的方法。但是,现有的ACT工作依赖于在深神经网络(DNN)训练期间寻找最佳的位宽度以减少量化噪声,从而使过程变得复杂且透明。为此,我们提出了一种简单有效的DNN培训方法。我们的方法是由观察结果激励的:\ emph {DNN向后传播主要取决于激活图的低频组分〜(LFC),而不是高频组件〜(HFC)}。它表明激活图的HFC在DNN训练过程中是高度冗余和可压缩的,这激发了我们提出的双重激活精度〜(分裂)。在培训期间,分裂估计激活图的LFC和HFC,并将HFC压缩到低精度副本中以消除冗余。这可以大大减少记忆消耗,而不会对DNN向后传播的精度产生负面影响。这样,部门可以实现可比的表现与正常培训。三个基准数据集的实验结果表明,在记忆消耗,模型准确性和跑步速度方面,分裂的表现优于最先进的基线方法。
translated by 谷歌翻译
近年来,基于卷积网络的视频动作识别令人鼓舞地普及;然而,受到远程非线性时间关系建模和反向运动信息建模的限制,因此,现有模型的性能是严重的。为了解决这一紧急问题,我们引入了一个具有自我监督(TTSN)的令人惊叹的时间变压器网络。我们的高性能TTSN主要由时间变压器模块和时间序列自我监控模块组成。简明扼要地说,我们利用高效的时间变压器模块来模拟非本地帧之间的非线性时间依赖性,这显着增强了复杂的运动特征表示。我们采用的时间序列自我监控模块我们专注于“随机批量随机通道”的简化策略来反转视频帧的序列,允许从反向时间维度提高运动信息表示并提高模型的泛化能力。在三个广泛使用的数据集(HMDB51,UCF101和某事物)上的广泛实验已经得出结论地证明,我们提出的TTSN充满希望,因为它成功实现了行动识别的最先进性能。
translated by 谷歌翻译
不同于单图像超分辨率(SISR)任务,视频超分辨率(VSR)任务的键是在帧中充分利用互补信息来重建高分辨率序列。由于来自不同帧的图像具有不同的运动和场景,因此精确地对准多个帧并有效地融合不同的帧,这始终是VSR任务的关键研究工作。为了利用邻近框架的丰富互补信息,在本文中,我们提出了一种多级VSR深度架构,称为PP-MSVSR,局部融合模块,辅助损耗和重新对准模块,以逐步改进增强率。具体地,为了加强特征传播中帧的特征的融合,在阶段-1中设计了局部融合模块,以在特征传播之前执行局部特征融合。此外,我们在阶段-2中引入辅助损耗,使得通过传播模块获得的特征储备更多相关的信息连接到HR空间,并在阶段-3中引入重新对准模块以充分利用该特征信息前一阶段。广泛的实验证实,PP-MSVSR实现了VID4数据集的有希望的性能,其实现了28.13dB的PSNR,仅具有1.45米的参数。并且PP-MSVSR-L具有相当大的参数的REDS4数据集上的所有状态。代码和模型将在Paddlegan \脚注{https://github.com/paddlepaddle/paddlegan。}。
translated by 谷歌翻译
Graph Neural Networks (GNNs) have shown satisfying performance on various graph learning tasks. To achieve better fitting capability, most GNNs are with a large number of parameters, which makes these GNNs computationally expensive. Therefore, it is difficult to deploy them onto edge devices with scarce computational resources, e.g., mobile phones and wearable smart devices. Knowledge Distillation (KD) is a common solution to compress GNNs, where a light-weighted model (i.e., the student model) is encouraged to mimic the behavior of a computationally expensive GNN (i.e., the teacher GNN model). Nevertheless, most existing GNN-based KD methods lack fairness consideration. As a consequence, the student model usually inherits and even exaggerates the bias from the teacher GNN. To handle such a problem, we take initial steps towards fair knowledge distillation for GNNs. Specifically, we first formulate a novel problem of fair knowledge distillation for GNN-based teacher-student frameworks. Then we propose a principled framework named RELIANT to mitigate the bias exhibited by the student model. Notably, the design of RELIANT is decoupled from any specific teacher and student model structures, and thus can be easily adapted to various GNN-based KD frameworks. We perform extensive experiments on multiple real-world datasets, which corroborates that RELIANT achieves less biased GNN knowledge distillation while maintaining high prediction utility.
translated by 谷歌翻译
This paper focuses on designing efficient models with low parameters and FLOPs for dense predictions. Even though CNN-based lightweight methods have achieved stunning results after years of research, trading-off model accuracy and constrained resources still need further improvements. This work rethinks the essential unity of efficient Inverted Residual Block in MobileNetv2 and effective Transformer in ViT, inductively abstracting a general concept of Meta-Mobile Block, and we argue that the specific instantiation is very important to model performance though sharing the same framework. Motivated by this phenomenon, we deduce a simple yet efficient modern \textbf{I}nverted \textbf{R}esidual \textbf{M}obile \textbf{B}lock (iRMB) for mobile applications, which absorbs CNN-like efficiency to model short-distance dependency and Transformer-like dynamic modeling capability to learn long-distance interactions. Furthermore, we design a ResNet-like 4-phase \textbf{E}fficient \textbf{MO}del (EMO) based only on a series of iRMBs for dense applications. Massive experiments on ImageNet-1K, COCO2017, and ADE20K benchmarks demonstrate the superiority of our EMO over state-of-the-art methods, \eg, our EMO-1M/2M/5M achieve 71.5, 75.1, and 78.4 Top-1 that surpass \textbf{SoTA} CNN-/Transformer-based models, while trading-off the model accuracy and efficiency well.
translated by 谷歌翻译
We aim to bridge the gap between our common-sense few-sample human learning and large-data machine learning. We derive a theory of human-like few-shot learning from von-Neuman-Landauer's principle. modelling human learning is difficult as how people learn varies from one to another. Under commonly accepted definitions, we prove that all human or animal few-shot learning, and major models including Free Energy Principle and Bayesian Program Learning that model such learning, approximate our theory, under Church-Turing thesis. We find that deep generative model like variational autoencoder (VAE) can be used to approximate our theory and perform significantly better than baseline models including deep neural networks, for image recognition, low resource language processing, and character recognition.
translated by 谷歌翻译
Despite significant progress in object categorization, in recent years, a number of important challenges remain; mainly, the ability to learn from limited labeled data and to recognize object classes within large, potentially open, set of labels. Zero-shot learning is one way of addressing these challenges, but it has only been shown to work with limited sized class vocabularies and typically requires separation between supervised and unsupervised classes, allowing former to inform the latter but not vice versa. We propose the notion of vocabulary-informed learning to alleviate the above mentioned challenges and address problems of supervised, zero-shot, generalized zero-shot and open set recognition using a unified framework. Specifically, we propose a weighted maximum margin framework for semantic manifold-based recognition that incorporates distance constraints from (both supervised and unsupervised) vocabulary atoms. Distance constraints ensure that labeled samples are projected closer to their correct prototypes, in the embedding space, than to others. We illustrate that resulting model shows improvements in supervised, zero-shot, generalized zero-shot, and large open set recognition, with up to 310K class vocabulary on Animal with Attributes and ImageNet datasets.
translated by 谷歌翻译