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Detecting Speaker Personas from Conversational Texts [article]

Jia-Chen Gu, Zhen-Hua Ling, Yu Wu, Quan Liu, Zhigang Chen, Xiaodan Zhu
2021 arXiv   pre-print
Personas are useful for dialogue response prediction. However, the personas used in current studies are pre-defined and hard to obtain before a conversation. To tackle this issue, we study a new task, named Speaker Persona Detection (SPD), which aims to detect speaker personas based on the plain conversational text. In this task, a best-matched persona is searched out from candidates given the conversational text. This is a many-to-many semantic matching task because both contexts and personas
more » ... n SPD are composed of multiple sentences. The long-term dependency and the dynamic redundancy among these sentences increase the difficulty of this task. We build a dataset for SPD, dubbed as Persona Match on Persona-Chat (PMPC). Furthermore, we evaluate several baseline models and propose utterance-to-profile (U2P) matching networks for this task. The U2P models operate at a fine granularity which treat both contexts and personas as sets of multiple sequences. Then, each sequence pair is scored and an interpretable overall score is obtained for a context-persona pair through aggregation. Evaluation results show that the U2P models outperform their baseline counterparts significantly.
arXiv:2109.01330v1 fatcat:quwcfmkn3rgedg7ld6llcp7n2e

Condition-Transforming Variational AutoEncoder for Conversation Response Generation [article]

Yu-Ping Ruan, Zhen-Hua Ling, Quan Liu, Zhigang Chen, Nitin Indurkhya
2019 arXiv   pre-print
This paper proposes a new model, called condition-transforming variational autoencoder (CTVAE), to improve the performance of conversation response generation using conditional variational autoencoders (CVAEs). In conventional CVAEs , the prior distribution of latent variable z follows a multivariate Gaussian distribution with mean and variance modulated by the input conditions. Previous work found that this distribution tends to become condition independent in practical application. In our
more » ... osed CTVAE model, the latent variable z is sampled by performing a non-lineartransformation on the combination of the input conditions and the samples from a condition-independent prior distribution N (0; I). In our objective evaluations, the CTVAE model outperforms the CVAE model on fluency metrics and surpasses a sequence-to-sequence (Seq2Seq) model on diversity metrics. In subjective preference tests, our proposed CTVAE model performs significantly better than CVAE and Seq2Seq models on generating fluency, informative and topic relevant responses.
arXiv:1904.10610v1 fatcat:ep4pkylwqjcgvkj7wted37y3ka

Analysis of Factors Affecting Vibration During Wet Clutch Engagement

Zhigang Zhang, Ling Zou, Hai Qing
2021 IEEE Access  
LING ZOU received the Bachelor of Engineering degree in mechanism design, manufacturing and automation from the Chongqing University of Science and Technology, China, in 2019.  ...  ZHIGANG ZHANG received the M.S. degree in mechatronics engineering from Chongqing University, China, in 2006, and the Ph.D. degree in vehicle engineering from Zhejiang University, China, in 2010.  ... 
doi:10.1109/access.2021.3061009 fatcat:eobwk7wl45aera5wz5urgmfreu

Randomized Quaternion Singular Value Decomposition for Low-Rank Approximation [article]

Qiaohua Liu, Sitao Ling, Zhigang Jia
2021 arXiv   pre-print
This paper presents a randomized quaternion singular value decomposition (QSVD) algorithm for low-rank matrix approximation problems, which are widely used in color face recognition, video compression, and signal processing problems. With quaternion normal distribution based random sampling, the randomized QSVD algorithm projects a high-dimensional data to a low-dimensional subspace and then identifies an approximate range subspace of the quaternion matrix. The key statistical properties of
more » ... ernion Wishart distribution are proposed and used to perform the approximation error analysis of the algorithm. Theoretical results show that the randomized QSVD algorithm can trace dominant singular value decomposition triplets of a quaternion matrix with acceptable accuracy. Numerical experiments also indicate the rationality of proposed theories. Applied to color face recognition problems, the randomized QSVD algorithm obtains higher recognition accuracies and behaves more efficient than the known Lanczos-based partial QSVD and a quaternion version of fast frequent directions algorithm.
arXiv:2011.03368v2 fatcat:qqen44dkxbcwxiwi56qpktebny

Mean percentage of returns for stock market linked savings accounts

Ling Feng, Zhigang Huang, Xuerong Mao
2016 Applied Mathematics and Computation  
Xuerong (2015) Mean percentage of returns for stock market linked savings accounts. Applied Mathematics and Computation. ISSN 0096-3003 (In Press) , http://dx. Abstract Stock market linked savings accounts have become more and more popular. The returns of these accounts are random so the returns, even the initial capital, are not guaranteed. They are very much different from the familiar fixed-term-fixed-rate savings accounts. The aim of this paper is to perform the stochastic and numerical
more » ... ysis on the stock market linked savings accounts in order to establish the theory on the mean percentage of return (MPR). We will mainly perform the case studies on 5 typical plans linked to the UK Financial Times Stock Exchange (FTSE) 100 Index, but the theory developed is fully illustrated so that it can be applied to other plans by the reader.
doi:10.1016/j.amc.2015.09.049 fatcat:cfuqd4nidza3rowrj53mjwpxgq

Perinatal testosterone exposure potentiates vascular dysfunction by ERβ suppression in endothelial progenitor cells

Weiguo Xie, Mingming Ren, Ling Li, Yin Zhu, Zhigang Chu, Zhigang Zhu, Qiongfang Ruan, Wenting Lou, Haimou Zhang, Zhen Han, Xiaodong Huang, Wei Xiang (+3 others)
2017 PLoS ONE  
Recent clinical cohort study shows that testosterone therapy increases cardiovascular diseases in men with low testosterone levels, excessive circulating androgen levels may play a detrimental role in the vascular system, while the potential mechanism and effect of testosterone exposure on the vascular function in offspring is still unknown. Our preliminary results showed that perinatal testosterone exposure in mice induces estrogen receptor β (ERβ) suppression in endothelial progenitor cells
more » ... PCs) in offspring but not mothers, while estradiol (E2) had no effect. Further investigation showed that ERβ suppression is due to perinatal testosterone exposure-induced epigenetic changes with altered DNA methylation on the ERβ promoter. During aging, EPCs with ERβ suppression mobilize to the vascular wall, differentiate into ERβ-suppressed mouse endothelial cells (MECs) with downregulated expression of SOD2 (mitochondrial superoxide dismutase) and ERRα (estrogen-related receptor α). This results in reactive oxygen species (ROS) generation and DNA damage, and the dysfunction of mitochondria and fatty acid metabolism, subsequently potentiating vascular dysfunction. Bone marrow transplantation of EPCs that overexpressed with either ERβ or a SIRT1 single mutant SIRT1-C152(D) that could modulate SIRT1 phosphorylation significantly ameliorated vascular dysfunction, while ERβ knockdown worsened the problem. We conclude that perinatal testosterone exposure potentiates vascular dysfunction through ERβ suppression in EPCs.
doi:10.1371/journal.pone.0182945 pmid:28809938 pmcid:PMC5557363 fatcat:2x2welqtx5atvie72l466gjkui

Fermented Chinese Formula Shuan-Tong-Ling Protects Brain Microvascular Endothelial Cells against Oxidative Stress Injury

Lingjing Tan, Xiang Zhang, Zhigang Mei, Jinfeng Wang, Xiaoli Li, Weifeng Huang, Songbai Yang
2016 Evidence-Based Complementary and Alternative Medicine  
Zhigang Mei for treating vascular encephalopathy, but the underlying mechanisms remained unknown.  ...  Fermented Chinese formulaShuan-Tong-Ling(STL), composed of fourteen medicinal herbs, was an experiential formula by Dr.  ...  Shuan-Tong-Ling (STL) is a new fermented Chinese formula, which is an experiential formula by Dr.  ... 
doi:10.1155/2016/5154290 pmid:28096886 pmcid:PMC5209619 fatcat:q2q2obnrbzattmkvr2eblm6faq

Mirroring Mobile Phone in the Clouds

Bin Ye, Frank Zhigang Wang, Ling Li, Na Helian, Theo Dimitrakos
2014 2014 IEEE International Conference on Mobile Services  
This paper presents a framework of Mirroring Mobile Phone in the Clouds (MMPC) to speed up data/computing intensive applications on a mobile phone by taking full advantage of the super computing power of the clouds. An application on the mobile phone is dynamically partitioned in such a way that the heavy-weighted part is always running on a mirrored server in the clouds while the light-weighted part remains on the mobile phone. A performance improvement (an energy consumption reduction of 70%
more » ... nd a speed-up of 15x) is achieved at the cost of the communication overhead between the mobile phone and the clouds (to transfer the application codes and intermediate results). Our original contributions include a dynamic profiler and a dynamic partitioning algorithm compared with traditional approaches of either statically partitioning a mobile application or modifying a mobile application to support the required partitioning.
doi:10.1109/mobserv.2014.28 dblp:conf/mobserv/YeWLHD14 fatcat:quozxsfpqfhklm2d27xzs3rkvy

Burkitt lymphoma‑associated network construction and important network motif analysis

Kunhao Wang, Chao Ma, Chong Xing, Chin‑Ling Chen, Zhigang Chen, Yuxia Yao, Jianan Wang, Chunyu Tao
2018 Oncology Letters  
Biological and medical researchers have discovered numerous transcription factors (TFs), microRNAs (miRNAs) and genes associated with Burkitt lymphoma (BL) through individual experiments; however, their regulatory mechanisms remain unclear. In the present study, BL-dysregulated and BL-associated networks were constructed to investigate these mechanisms. All data and regulatory associations were from known data resources and literature. The dysregulated network consisted of dysregulated TFs,
more » ... As and genes, and partially determined the pathogenesis mechanisms underlying BL. The BL-associated network consisted of BL-associated TFs, miRNAs and genes. It has been indicated that the network motif consisted of TFs, miRNAs and genes serve potential functions in numerous biological processes within cancer. Two of the most studied network motifs are feedback loop (FBL) and feed-forward loop (FFL). The important network motifs were extracted, including the FBL motif, 3-nodes FFL motif and 4-nodes motif, from BL-dysregulated and BL-associated networks, and 10 types of motifs were identified from BL-associated network. Finally, 26/31 FBL motifs, 45/75 3-nodes FFL motifs and 54/94 4-nodes motifs were obtained from the dysregulated/associated networks. A total of four TFs (E2F1, NFKB1, E2F4 and TCF3) exhibit complicated regulation associations in BL-associated networks. The biological network does not demonstrate the dysregulated status for healthy people. When the individual becomes unwell, their biological network exhibits a dysregulated status. If the dysregulated status is regulated to a normal status by a number of medical methods, the diseases may be treated successfully. BL-dysregulated networks serve important roles in pathogenesis mechanisms underlying BL regulation of the dysregulated network, which may be an effective strategy that contributes to gene therapy for BL.
doi:10.3892/ol.2018.9010 pmid:30127896 pmcid:PMC6096059 fatcat:7dkw53c74rfhdehnnn67vbwd6i

Beamforming design for MIMO full‐duplex SWIPT IoT system under imperfect CSI

Dan Liu, Ling Zhong, Zhiguo Xu, Zhigang Wen, Junwei Zou
2021 IET Communications  
This paper proposes a multiple-input multiple-output full-duplex relay Internet of Things system under imperfect channel state information, where the relay uses time switching relaying protocol to harvest energy. Particularly, due to the uncertainty channel circumstance, the self-interference in full-duplex relay cannot be eliminated completely. For such a system, a joint source-relay beamforming optimization problem which maximizes the system achievable rate subject to the transmit power and
more » ... rvested energy constraints is studied. In light of the intractability of the problem, a singular value decomposition based geometric programming algorithm is investigated. The considered problem is reformulated to a diagonalized form by using singular value decomposition method. Then, the geometric programming algorithm is adopted to obtain the optimal solution for the reformulated problem. Numerical results validate the effectiveness and superiority of the proposed optimization scheme. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. ciency in IoT networks [9] [10] [11] . Based on time switching (TS) and power splitting (PS) receiver architectures, two popular relaying protocols, namely, TS relaying (TSR) protocol and PS relaying (PSR) protocol have been proposed in [12] [13] [14] [15] . In [14] , the reliability performance of a SWIPT-enabled relaying network considering both PS and TS protocols was studied in the finite blocklength (FBL) regime. In [15] , an amplify-andforward (AF) network considering both TSR and PSR protocols was investigated and the achievable throughput performance at the destination was determined by deriving analytical expressions. Compared with the PSR, in the TSR, relay periodically switches between EH and information transmission (IT), which has gained many research interests. In [9], a TS-based decodeand-forward (DF) two-way cooperative cognitive radio network (CCRN) was proposed; herein, a pair of IoT devices (IoDs) were used as TS relays to provide assistance for primary users communication. In [16] , the outage optimization problem for two-way network with TSR scheme was investigated. The other is the spectrum resources limitation. Full-duplex (FD) relay is treated as a promising technique to double the spectrum efficiency and increase the capacity of the IoT networks, since it enables simultaneously transmission and IET Commun. 2021;1-10. wileyonlinelibrary.com/iet-com 1 How to cite this article: Liu, D., et al.: Beamforming design for MIMO full-duplex SWIPT IoT system under imperfect CSI. IET Commun.
doi:10.1049/cmu2.12196 fatcat:l3h345d7lzegfcsxbhzlcfh2vy

Erratum to: A Method for Metric Learning with Multiple-Kernel Embedding

Xiao Lu, Yaonan Wang, Xuanyu Zhou, Zhigang Ling
2015 Neural Processing Letters  
doi:10.1007/s11063-015-9468-8 fatcat:ea3hxp2g5zdc5o7sjts6w2c6ta

Effect of external pressure on the release of methane through MFI zeolite nanochannels

Xu Cheng, Zhigang Li, Ya-Ling He
2020 RSC Advances  
In this work, the effects of external pressure on the release of methane through zeolite nanochannels are studied through molecular dynamics (MD) simulations.
doi:10.1039/d0ra07506j pmid:35521278 pmcid:PMC9057110 fatcat:2omg66ummzaiblknpqz2p5224a

Development and Reproduction ofMallada basalis(Neuroptera: Chrysopidae) on Artificial Diets

Jingwen Ye, Jianqing Dai, Jun Li, Zhigang Li, Yongyue Lu, Shichou Han, Ling Zeng
2015 Florida Entomologist  
The green lacewing, Mallada basalis (Walker) (Neuroptera: Chrysopidae), has a broad prey range and effective searching abilities. Because rearing procedures based on natural or factitious foods for the larvae of this economically important predator are often time consuming and/or expensive, the main objective of our study was to develop an artificial diet suitable for mass rearing. We analyzed the development, survival, longevity, and reproduction of M. basalis (F1 generation) fed 3 artificial
more » ... iets. These diets were formulated based on those of Chrysoperla sinica Tjeder and Chrysopa pallens (Rambur) (Neuroptera: Chrysopidae). All 3 of the diets contained chicken egg, beer yeast powder, sucrose, trehalose, vitamin C, and potassium sorbate. The first artificial diet (AD1) also contained honey and distilled water. AD2 also included pupal hemolymph of the Chinese oak silk moth (Antheraea pernyi Guérin-Méneville; Lepidoptera: Saturniidae), and AD3 also included whole A. pernyi pupae, which had been blended into all of the ingredients. The 2nd instars reared on AD3 required 2.91 d to develop to 3rd instars, which was significantly less time than the 3.69 d required on AD2. However, 3rd instars reared on AD1 required 4.48 d to develop to the pupal stage, which was significantly shorter than 3rd instars on AD2 and AD3 at 6.92 and 5.68 d, respectively. The development time of pupae in the AD3 treatment was 8.18 d, which was significantly shorter than that of pupae in the AD1 and AD2 treatments at 9.05 and 10.00 d, respectively. There were significant differences in adult longevity among the 3 diets, and these longevities in the AD1, AD2, and AD3 treatments were 39.40, 4.75, and 30.11 d, respectively. The oviposition period was significantly longer for females reared on AD1 (22.70 d) than for females reared on AD3 (5.25 d). The oviposition rate and total number of eggs laid from AD1 (16.41 eggs/day and 476.67 eggs, respectively) were significantly greater than those from AD3 (3.11 eggs/day and 19.75 eggs respectively). Females reared on AD2 laid no eggs. There were significant differences in egg hatch and pupation rates among the 3 diets. The egg hatch and pupation rate were largest on AD1, i.e., 100.0% and 63.3%, respectively, whereas they were the least on AD2, i.e., 53.33% and 16.19%, respectively. There were significant differences in hatch rates from newly laid eggs (F2 generation) between AD1 and AD3, i.e., 70.4% and 63.0%, respectively. We found that M. basalis was able to develop and reproduce when fed artificial diets AD1 and AD3. However, AD1 was much better than AD3. The development and reproduction of M. basalis fed AD2 were unacceptable. AD1 contained twice the amount of chicken egg compared with AD2 and AD3, and egg yolk is known to be a high-quality component of diets for entomophagous insects. The diet AD1 was also the only one that contained honey. All the 3 diets contained trehalose, which can be a partial substitute for insect components. Our findings may contribute to the mass production of this economically important predatory green lacewing.
doi:10.1653/024.098.0410 fatcat:snmvlyl5ofbhjop7y3jgozjtsa

Solvability Theory and Iteration Method for One Self-Adjoint Polynomial Matrix Equation

Zhigang Jia, Meixiang Zhao, Minghui Wang, Sitao Ling
2014 Journal of Applied Mathematics  
The solvability theory of an important self-adjoint polynomial matrix equation is presented, including the boundary of its Hermitian positive definite (HPD) solution and some sufficient conditions under which the (unique or maximal) HPD solution exists. The algebraic perturbation analysis is also given with respect to the perturbation of coefficient matrices. An efficient general iterative algorithm for the maximal or unique HPD solution is designed and tested by numerical experiments.
doi:10.1155/2014/681605 fatcat:6ttjvxfbjbetdbn2mnei5oylwu

Effects of temperature and pore structure on the release of methane in zeolite nanochannels

Xu Cheng, Zhigang Li, Ya-Ling He
2019 RSC Advances  
The effects of temperature and pore size on release of methane in zeolite nanochannels is investigated by molecular dynamics simulations.
doi:10.1039/c9ra00317g pmid:35520735 pmcid:PMC9062188 fatcat:enpb44dv5fd7xafjj6c2bnlgdy
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