Остановите войну!
for scientists:
default search action
Qun Liu
This is just a disambiguation page, and is not intended to be the bibliography of an actual person. The links to all actual bibliographies of persons of the same or a similar name can be found below. Any publication listed on this page has not been assigned to an actual author yet. If you know the true author of one of the publications listed below, you are welcome to contact us.
Person information
Other persons with the same name
- Qun Liu 0001 — Huawei Noah's Ark Lab (and 5 more)
- Qun Liu 0002 — Hexi University, Zhangye, China (and 1 more)
- Qun Liu 0003 — Northeast Normal University, Changchun, Jilin, China
- Qun Liu 0004 — Louisiana State University, Baton Rouge, LA, USA
- Qun Liu 0005 — Chongqing University of Posts and Telecommunications, Chongqing, China
- Qun Liu 0006 — Shandong University, School of Cyber Science and Technology, Key Laboratory of Cryptologic Technology and Information Security, China
- Qun Liu 0007 — Minnan Normal University, School of Mathematics and Statistics, Zhangzhou, China (and 1 more)
- Qun Liu 0008 — Yulin Normal University, School of Mathematics and Information Science, China
Refine list
refinements active!
zoomed in on ?? of ?? records
view refined list in
export refined list as
2020 – today
- 2024
- [j26]Jiangli Duan, Guoyin Wang, Xin Hu, Qun Liu, Qin Jiang, Huamin Zhu:
Concept cognition for knowledge graphs: Mining multi-granularity decision rule. Cogn. Syst. Res. 87: 101258 (2024) - [j25]Xiaoxia Zhang, Mengsheng Ye, Yun Zhang, Qun Liu, Guoyin Wang, Kesheng Wu:
Mg-SubAgg: Multi-granularity Subgraph Aggregation with topology for GNN. Inf. Sci. 677: 120892 (2024) - [j24]Yanying Mao, Qun Liu, Yu Zhang:
Sentiment analysis methods, applications, and challenges: A systematic literature review. J. King Saud Univ. Comput. Inf. Sci. 36(5): 102048 (2024) - [j23]Yue Liu, Zhenyao Yu, Zitu Liu, Ziyi Yu, Xinyan Yang, Xingyue Li, Yike Guo, Qun Liu, Guoyin Wang:
Improving disentanglement in variational auto-encoders via feature imbalance-informed dimension weighting. Knowl. Based Syst. 296: 111818 (2024) - [j22]Yantao Luo, Jianhua Huang, Zhidong Teng, Qun Liu:
Role of ART and PrEP treatments in a stochastic HIV/AIDS epidemic model. Math. Comput. Simul. 221: 337-357 (2024) - [c35]Yu Pan, Ye Yuan, Yichun Yin, Jiaxin Shi, Zenglin Xu, Ming Zhang, Lifeng Shang, Xin Jiang, Qun Liu:
Preparing Lessons for Progressive Training on Language Models. AAAI 2024: 18860-18868 - [i21]Haochen Tan, Zhijiang Guo, Zhan Shi, Lu Xu, Zhili Liu, Xiaoguang Li, Yasheng Wang, Lifeng Shang, Qun Liu, Linqi Song:
PROXYQA: An Alternative Framework for Evaluating Long-Form Text Generation with Large Language Models. CoRR abs/2401.15042 (2024) - [i20]Jianqiao Lu, Wanjun Zhong, Yufei Wang, Zhijiang Guo, Qi Zhu, Wenyong Huang, Yanlin Wang, Fei Mi, Baojun Wang, Yasheng Wang, Lifeng Shang, Xin Jiang, Qun Liu:
YODA: Teacher-Student Progressive Learning for Language Models. CoRR abs/2401.15670 (2024) - [i19]Wai-Chung Kwan, Xingshan Zeng, Yuxin Jiang, Yufei Wang, Liangyou Li, Lifeng Shang, Xin Jiang, Qun Liu, Kam-Fai Wong:
MT-Eval: A Multi-Turn Capabilities Evaluation Benchmark for Large Language Models. CoRR abs/2401.16745 (2024) - [i18]Shu-Ting Pi, Michael Yang, Qun Liu:
Contact Complexity in Customer Service. CoRR abs/2402.15655 (2024) - [i17]Shu-Ting Pi, Michael Yang, Yuying Zhu, Qun Liu:
Teacher-Student Learning on Complexity in Intelligent Routing. CoRR abs/2402.15665 (2024) - [i16]Shu-Ting Pi, Cheng-Ping Hsieh, Qun Liu, Yuying Zhu:
Universal Model in Online Customer Service. CoRR abs/2402.15666 (2024) - [i15]Shu-Ting Pi, Sidarth Srinivasan, Yuying Zhu, Michael Yang, Qun Liu:
Uncovering Customer Issues through Topological Natural Language Analysis. CoRR abs/2403.00804 (2024) - [i14]Yueqian Wang, Xiaojun Meng, Jianxin Liang, Yuxuan Wang, Qun Liu, Dongyan Zhao:
HawkEye: Training Video-Text LLMs for Grounding Text in Videos. CoRR abs/2403.10228 (2024) - [i13]Xuming Hu, Xiaochuan Li, Junzhe Chen, Yinghui Li, Yangning Li, Xiaoguang Li, Yasheng Wang, Qun Liu, Lijie Wen, Philip S. Yu, Zhijiang Guo:
Evaluating Robustness of Generative Search Engine on Adversarial Factual Questions. CoRR abs/2403.12077 (2024) - [i12]Zhiming Mao, Haoli Bai, Lu Hou, Jiansheng Wei, Xin Jiang, Qun Liu, Kam-Fai Wong:
Visually Guided Generative Text-Layout Pre-training for Document Intelligence. CoRR abs/2403.16516 (2024) - [i11]Renlong Jie, Xiaojun Meng, Lifeng Shang, Xin Jiang, Qun Liu:
Prompt-Based Length Controlled Generation with Multiple Control Types. CoRR abs/2406.10278 (2024) - [i10]Mohammad Dehghan, Mohammad Ali Alomrani, Sunyam Bagga, David Alfonso-Hermelo, Khalil Bibi, Abbas Ghaddar, Yingxue Zhang, Xiaoguang Li, Jianye Hao, Qun Liu, Jimmy Lin, Boxing Chen, Prasanna Parthasarathi, Mahdi Biparva, Mehdi Rezagholizadeh:
EWEK-QA: Enhanced Web and Efficient Knowledge Graph Retrieval for Citation-based Question Answering Systems. CoRR abs/2406.10393 (2024) - 2023
- [j21]Qun Liu, Zhenfeng Shi:
Analysis of a Stochastic HBV Infection Model with DNA-Containing Capsids and Virions. J. Nonlinear Sci. 33(1): 23 (2023) - [j20]Martin Becker, Huda Nassar, Camilo Espinosa, Ina A. Stelzer, Dorien Feyaerts, Eloïse Berson, Neda Hajiakhoond Bidoki, Alan L. Chang, Geetha Saarunya, Anthony Culos, Davide De Francesco, Ramin Fallahzadeh, Qun Liu, Yeasul Kim, Ivana Maric, Samson Mataraso, Seyedeh Neelufar Payrovnaziri, Thanaphong Phongpreecha, Neal G. Ravindra, Natalie Stanley, Sayane Shome, Yuqi Tan, Melan Thuraiappah, Maria Xenochristou, Lei Xue, Gary M. Shaw, David K. Stevenson, Martin S. Angst, Brice Gaudilliere, Nima Aghaeepour:
Large-scale correlation network construction for unraveling the coordination of complex biological systems. Nat. Comput. Sci. 3(4): 346-359 (2023) - [c34]Chaofan Tao, Lu Hou, Haoli Bai, Jiansheng Wei, Xin Jiang, Qun Liu, Ping Luo, Ngai Wong:
Structured Pruning for Efficient Generative Pre-trained Language Models. ACL (Findings) 2023: 10880-10895 - [c33]Xiaoguang Jiang, You Yang, Qiong Liu, Changbiao Tao, Qun Liu:
PMPI: Patch-Based Multiplane Images for Real-Time Rendering of Neural Radiance Fields. CICAI (1) 2023: 269-280 - [c32]Chang Liu, Xiaoguang Li, Lifeng Shang, Xin Jiang, Qun Liu, Edmund Y. Lam, Ngai Wong:
Gradually Excavating External Knowledge for Implicit Complex Question Answering. EMNLP (Findings) 2023: 14405-14417 - [c31]Daitianxia Li, Ye Wang, Qun Liu:
Adaptive Multi-granularity Aggregation Transformer for Image Captioning. IJCRS 2023: 339-353 - [c30]Qun Liu, Yi Cai, Junying Chen:
MC-PDARTS: Multi-Cell Progressive Differentiable Architecture Search. SMC 2023: 2667-2674 - [c29]Shu-Ting Pi, Cheng-Ping Hsieh, Qun Liu, Yuying Zhu:
Universal Model in Online Customer Service. WWW (Companion Volume) 2023: 878-885 - [i9]Weixuan Wang, Wei Peng, Qun Liu:
Learning Homographic Disambiguation Representation for Neural Machine Translation. CoRR abs/2304.05860 (2023) - [i8]Jianqiao Lu, Wanjun Zhong, Wenyong Huang, Yufei Wang, Fei Mi, Baojun Wang, Weichao Wang, Lifeng Shang, Qun Liu:
SELF: Language-Driven Self-Evolution for Large Language Model. CoRR abs/2310.00533 (2023) - [i7]Kai Chen, Chunwei Wang, Kuo Yang, Jianhua Han, Lanqing Hong, Fei Mi, Hang Xu, Zhengying Liu, Wenyong Huang, Zhenguo Li, Dit-Yan Yeung, Lifeng Shang, Xin Jiang, Qun Liu:
Gaining Wisdom from Setbacks: Aligning Large Language Models via Mistake Analysis. CoRR abs/2310.10477 (2023) - [i6]Yunhe Wang, Hanting Chen, Yehui Tang, Tianyu Guo, Kai Han, Ying Nie, Xutao Wang, Hailin Hu, Zheyuan Bai, Yun Wang, Fangcheng Liu, Zhicheng Liu, Jianyuan Guo, Sinan Zeng, Yinchen Zhang, Qinghua Xu, Qun Liu, Jun Yao, Chao Xu, Dacheng Tao:
PanGu-π: Enhancing Language Model Architectures via Nonlinearity Compensation. CoRR abs/2312.17276 (2023) - 2022
- [j19]Ke Zheng, Enlai Gao, Bin Tian, Jing Liang, Qun Liu, Enbo Xue, Qian Shao, Wei Wu:
Modularized Paper Actuator Based on Shape Memory Alloy, Printed Heater, and Origami. Adv. Intell. Syst. 4(12) (2022) - [c28]Qun Liu, Hongxu Chen:
Optimization of J supermarket cashier service system based on M/M/c model. MSIE 2022: 478-484 - [c27]Shaohua Hu, Jing Zhang, Jianming Tang, Qun Liu, Wei Jin, Zhuqiang Zhong, Roger Philip Giddings, Jiahao Zhou, Taowei Jin, Xue Zhao, Bo Xu, Xiang Gao, Kun Qiu:
112-Gb/s PAM-4 IM/DD Optical Transmission over 100-km Single Mode Fiber with Linear Equalizer. OFC 2022: 1-3 - 2021
- [j18]Dongbao Jia, Cunhua Li, Qun Liu, Qin Yu, Xiangsheng Meng, Zhaoman Zhong, Xinxin Ban, Nizhuan Wang:
Application and Evolution for Neural Network and Signal Processing in Large-Scale Systems. Complex. 2021: 6618833:1-6618833:7 (2021) - [c26]Qun Liu, Wenyan Du:
Construction of Digital Economy Ecological Model Based on 5G Network Technology. AIAM (ACM) 2021: 2747-2752 - [c25]Jing Zhang, Qun Liu, Mingyue Zhu, Hong Lin, Shaohua Hu, Xingwen Yi, Kun Qiu:
EML-based 200-Gbit/s/λ DMT Signal Transmission over 10-km SSMF Using Entropy Loading and Simplified Volterra Equalization. OFC 2021: 1-3 - [c24]Weixuan Wang, Wei Peng, Xupeng Meng, Qun Liu:
Huawei AARC's Submissions to the WMT21 Biomedical Translation Task: Domain Adaption from a Practical Perspective. WMT@EMNLP 2021: 868-873 - [i5]Qianmengke Zhao, Ye Wang, Qun Liu:
Multi-Semantic Image Recognition Model and Evaluating Index for explaining the deep learning models. CoRR abs/2109.13531 (2021) - 2020
- [j17]Qun Liu, Xiaoyu Cui, Cédric Jamet, Xiaolei Zhu, Zhihua Mao, Peng Chen, Jian Bai, Dong Liu:
A Semianalytic Monte Carlo Simulator for Spaceborne Oceanic Lidar: Framework and Preliminary Results. Remote. Sens. 12(17): 2820 (2020) - [j16]Ruoran Liu, Qiaolv Ling, Qiangbo Zhang, Yudi Zhou, Chengfeng Le, Yatong Chen, Qun Liu, Weibiao Chen, Junwu Tang, Dong Liu:
Detection of Chlorophyll a and CDOM Absorption Coefficient with a Dual-Wavelength Oceanic Lidar: Wavelength Optimization Method. Remote. Sens. 12(18): 3021 (2020) - [c23]Qun Liu, Ming Tang:
Light Intensity Data Collector Based on 51 Single Chip Microcomputer. MLICOM 2020: 187-194 - [i4]Qun Liu, Matthew Shreve, Raja Bala:
LiDAM: Semi-Supervised Learning with Localized Domain Adaptation and Iterative Matching. CoRR abs/2010.06668 (2020)
2010 – 2019
- 2019
- [j15]Wanjuan Zhang, Lihua Fu, Qun Liu:
Nonconvex Log-Sum Function-Based Majorization-Minimization Framework for Seismic Data Reconstruction. IEEE Geosci. Remote. Sens. Lett. 16(11): 1776-1780 (2019) - [j14]Yudi Zhou, Weibiao Chen, Xiaoyu Cui, Aleksey Malinka, Qun Liu, Bing Han, Xueji Wang, Wenqi Zhuo, Haochi Che, Qingjun Song, Xiaolei Zhu, Dong Liu:
Validation of the Analytical Model of Oceanic Lidar Returns: Comparisons with Monte Carlo Simulations and Experimental Results. Remote. Sens. 11(16): 1870 (2019) - [j13]Dong Liu, Peng Chen, Haochi Che, Zhipeng Liu, Qun Liu, Qingjun Song, Sijie Chen, Peituo Xu, Yudi Zhou, Weibiao Chen, Bing Han, Xiaolei Zhu, Yan He, Zhihua Mao, Chengfeng Le:
Lidar Remote Sensing of Seawater Optical Properties: Experiment and Monte Carlo Simulation. IEEE Trans. Geosci. Remote. Sens. 57(11): 9489-9498 (2019) - [c22]Qun Liu, Kehua Miao, Kaihong Lin:
Inventory Management of Automobile After-sales Parts Based on Data Mining. HPCCT/BDAI 2019: 195-199 - [i3]Qun Liu, Lihua Fu, Meng Zhang:
Deep-seismic-prior-based reconstruction of seismic data using convolutional neural networks. CoRR abs/1911.08784 (2019) - [i2]Qun Liu, Subhashis Hazarika, John M. Patchett, James Paul Ahrens, Ayan Biswas:
Deep Learning-Based Feature-Aware Data Modeling for Complex Physics Simulations. CoRR abs/1912.03587 (2019) - 2018
- [i1]Qun Liu, Suman Kumar, Vijay Kumar Mago:
SafeRNet: Safe Transportation Routing in the era of Internet of Vehicles and Mobile Crowd Sensing. CoRR abs/1805.01162 (2018) - 2017
- [j12]Qun Liu, Weizhong Wang:
Resistance distance and Kirchhoff index in subdivision-vertex and subdivision-edge neighbourhood coronae. Ars Comb. 130: 29-41 (2017) - [j11]Hongyu Sun, Zhiyi Fang, Qun Liu, Zheng Lu, Ting Zhu:
Enabling LTE and WiFi Coexisting in 5 GHz for Efficient Spectrum Utilization. J. Comput. Networks Commun. 2017: 5156164:1-5156164:17 (2017) - [c21]Qun Liu, Suman Kumar, Vijay Kumar Mago:
SafeRNet: Safe transportation routing in the era of Internet of vehicles and mobile crowd sensing. CCNC 2017: 299-304 - 2016
- [c20]Rong Kuang, Qun Liu, Hong Yu:
Community-Based Link Prediction in Social Networks. ICSI (2) 2016: 341-348 - 2015
- [j10]Jian Shu, Shandong Jiang, Qun Liu, Linlan Liu, Xiaotian Geng:
A connectivity monitoring model of opportunistic sensor network based on evolving graph. Comput. Sci. Inf. Syst. 12(2): 895-909 (2015) - [j9]Qun Liu, Fanhai Zeng, Changpin Li:
Finite difference method for time-space-fractional Schrödinger equation. Int. J. Comput. Math. 92(7): 1439-1451 (2015) - [j8]Qun Liu, Xiaobing Li:
A New Parallel Item-Based Collaborative Filtering Algorithm Based on Hadoop. J. Softw. 10(4): 416-426 (2015) - [c19]Lili Yang, Qun Liu, Shuang-Hua Yang, Dapeng Yu:
Evacuation Planning with Flood Inundation as Inputs. ISCRAM 2015 - 2014
- [j7]Qun Liu, Yiliang Liu, Xue Pan:
Global stability of a stochastic predator-prey system with infinite delays. Appl. Math. Comput. 235: 1-7 (2014) - [j6]Qun Liu:
On the Spectrum of graphs with pockets. Ars Comb. 115: 261-271 (2014) - 2013
- [j5]Yong Huang, Qun Liu, Yiliang Liu:
Global asymptotic stability of a general stochastic Lotka-Volterra system with delays. Appl. Math. Lett. 26(1): 175-178 (2013) - [c18]Rui Zhou, Zhu Ai, Jun Hu, Qun Liu, Qingguo Zhou, Xuan Wang, Hai Jiang, Kuan-Ching Li:
Data Integrity Checking for iSCSI with Dm-verity. EMC/HumanCom 2013: 691-697 - [c17]Rui Zhou, Huaming Chen, Qun Liu, Yong Sheng, Qingguo Zhou, Xuan Wang, Kuan-Ching Li:
A Server Model for Reliable Communication on Cell/B.E. ICPP 2013: 1020-1027
2000 – 2009
- 2008
- [c16]Xinyuan Liang, Kefei Cheng, Qun Liu, Zhengxia Wang:
A Criterion for Global Asymptotic Stability of Cohen-Grossberg Neural Networks with Delays. GrC 2008: 413-416 - [c15]Xinyuan Liang, Qun Liu, Zhengxia Wang, Kefei Cheng:
Global Exponential Stability Analysis of Cohen-Grossberg Neural Networks with Variable Coefficients and Time-varying Delays. GrC 2008: 417-422 - [c14]Qun Liu, Lanfen Wang, Yu Wu:
Bifurcating Periodic Solutions for a Single Delayed Neuron Model under Periodic Excitation. GrC 2008: 452-457 - [p1]Shu-Guang Li, Qun Liu:
A New Paradigm for Groundwater Modeling. Quantitative Information Fusion for Hydrological Sciences 2008: 19-41 - 2007
- [c13]Degang Yang, Qun Liu, Yong Wang:
A Novel Delay-Dependent Global Stability Criterion of Delayed Hopfield Neural Networks. GrC 2007: 538-541 - [c12]Gang Liu, Qun Liu, Wentao Zhang:
Model-Based Testing and Validation on Artificial Intelligence Systems. IMSCCS 2007: 445-449 - 2006
- [j4]Shu-Guang Li, Qun Liu:
Interactive Ground Water (IGW). Environ. Model. Softw. 21(3): 417-418 (2006) - [j3]Shu-Guang Li, Qun Liu, Soheil Afshari:
An object-oriented hierarchical patch dynamics paradigm (HPDP) for modeling complex groundwater systems across multiple-scales. Environ. Model. Softw. 21(5): 744-749 (2006) - [j2]Yeh Lam, Yuan Lin Zhang, Qun Liu:
A geometric process model for M. Eur. J. Oper. Res. 168(1): 100-121 (2006) - [c11]Xiaoning Feng, Qun Liu, Zhuo Wang:
A Web Service Composition Modeling and Evaluation Method Used Petri Net. APWeb Workshops 2006: 905-911 - [c10]Qun Liu, Dan Feng:
An Approximate Analytic Performance Model of Object-Based Storage. ICCSA (1) 2006: 1045-1052 - [c9]Xiaoning Feng, Qun Liu, Zhuo Wang:
AUV Modeling and Analysis using a Colored Object-Oriented Petri Net. IMSCCS (2) 2006: 405-409 - [c8]Bing Liang, Qun Liu:
A Data Fusion Approach for Power Saving in Wireless Sensor Networks. IMSCCS (2) 2006: 582-586 - [c7]Qun Liu, Dan Feng, Lingjun Qin, Lingfang Zeng:
A Framework for Accessing General Object Storage. IWNAS 2006: 145-148 - [c6]Lingfang Zeng, Ke Zhou, Zhan Shi, Dan Feng, Fang Wang, Changsheng Xie, Zhitang Li, Zhanwu Yu, Jianya Gong, Qiang Cao, Zhongying Niu, Lingjun Qin, Qun Liu, Yao Li:
Storage challenge - HUSt: a heterogeneous unified storage system for GIS grid. SC 2006: 325 - 2005
- [c5]Dan Feng, Lingfang Zeng, Fang Wang, Lingjun Qin, Qun Liu:
Adaptive Policy Trigger Mechanism for OBSS. AINA 2005: 591-595 - [c4]Dan Feng, Lingfang Zeng, Fang Wang, Degang Liu, Fayong Zhang, Lingjun Qin, Qun Liu:
Geographic Information Systems Grid. EGC 2005: 823-830 - [c3]Qun Liu, WenBiao Jin, SiYuan Wu, YingHua Zhou:
Clustering research using dynamic modeling based on granular computing. GrC 2005: 539-543 - [c2]Dan Feng, Lingfang Zeng, Lingjun Qin, Qun Liu:
Holistic Load Balancing Strategy and Practice in Object Storage System. SKG 2005: 81 - 2004
- [c1]Jing Zhang, Qun Liu, Baikunth Nath:
Landmine Feature Extraction and Classification of GPR Data Based on SVM Method. ISNN (1) 2004: 636-641 - 2003
- [j1]Shu-Guang Li, Qun Liu:
Interactive Groundwater (IGW): An innovative digital laboratory for groundwater education and research. Comput. Appl. Eng. Educ. 11(4): 179-202 (2003)
Coauthor Index
manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.
Unpaywalled article links
Add open access links from to the list of external document links (if available).
Privacy notice: By enabling the option above, your browser will contact the API of unpaywall.org to load hyperlinks to open access articles. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Unpaywall privacy policy.
Archived links via Wayback Machine
For web page which are no longer available, try to retrieve content from the of the Internet Archive (if available).
Privacy notice: By enabling the option above, your browser will contact the API of archive.org to check for archived content of web pages that are no longer available. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Internet Archive privacy policy.
Reference lists
Add a list of references from , , and to record detail pages.
load references from crossref.org and opencitations.net
Privacy notice: By enabling the option above, your browser will contact the APIs of crossref.org, opencitations.net, and semanticscholar.org to load article reference information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Crossref privacy policy and the OpenCitations privacy policy, as well as the AI2 Privacy Policy covering Semantic Scholar.
Citation data
Add a list of citing articles from and to record detail pages.
load citations from opencitations.net
Privacy notice: By enabling the option above, your browser will contact the API of opencitations.net and semanticscholar.org to load citation information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the OpenCitations privacy policy as well as the AI2 Privacy Policy covering Semantic Scholar.
OpenAlex data
Load additional information about publications from .
Privacy notice: By enabling the option above, your browser will contact the API of openalex.org to load additional information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the information given by OpenAlex.
last updated on 2024-07-27 16:40 CEST by the dblp team
all metadata released as open data under CC0 1.0 license
see also: Terms of Use | Privacy Policy | Imprint