R<sup>2</sup>PO: Decoupling Training Trajectories from Inference Responses for LLM Reasoning.

Xiaoqian Sun

Jingchu Wang Bingbing Xu 0001 Yige Yuan Bin Xie Xiaoqian Sun Huawei Shen R<sup>2</sup>PO: Decoupling Training Trajectories from Inference Responses for LLM Reasoning. 2026 January abs/2601.11960 CoRR https://doi.org/10.48550/arXiv.2601.11960 db/journals/corr/corr2601.html#abs-2601-11960 streams/journals/corr

Xiaoqian Sun Xingxing Weng Chao Pang 0001 Gui-Song Xia Mitigating representation bias for class-incremental semantic segmentation of remote sensing images. 2025 68 Sci. China Inf. Sci. 8 https://doi.org/10.1007/s11432-024-4307-1 db/journals/chinaf/chinaf68.html#SunWPX25 streams/journals/chinaf

Sebastian Wandelt Shuang Wang Xiaoqian Sun A literature review on hub location-routing models and their solution techniques. 106861 2025 173 Comput. Oper. Res. https://doi.org/10.1016/j.cor.2024.106861 db/journals/cor/cor173.html#WandeltWS25 streams/journals/cor

Sebastian Wandelt Xinyue Chen Xiaoqian Sun Flight Delay Prediction: A Dissecting Review of Recent Studies Using Machine Learning. 4283-4297 2025 April 26 IEEE Trans. Intell. Transp. Syst. 4 https://doi.org/10.1109/TITS.2025.3528536 db/journals/tits/tits26.html#WandeltCS25 streams/journals/tits

Sebastian Wandelt Xinyue Chen Xiaoqian Sun Networks for Flight Delay Analysis: A Scoping Review and Research Agenda. 1250-1266 2025 March - April 12 IEEE Trans. Netw. Sci. Eng. 2 https://doi.org/10.1109/TNSE.2025.3526850 db/journals/tnse/tnse12.html#WandeltCS25 streams/journals/tnse

Kangzhuo Chen Xiaoqian Sun Huawei Shen Xueqi Cheng Let Topology Speak: Graph Neural Network with Topology-Aware Augmentation. 5592-5599 2025 CIKM https://doi.org/10.1145/3746252.3761516 conf/cikm/2025 db/conf/cikm/cikm2025.html#ChenSSC25 Shuoling Liu Yiran Shan Hui Wu Xiaoqian Sun Jianqiu Deng Xiangyu Wang Credit Risk Forecasting Through the Synergy of Large Language Models and Graph Learning. ICDM (Workshops) 2025 919-926 conf/icdm/2025w https://doi.org/10.1109/ICDMW69685.2025.00109 db/conf/icdm/icdm2025w.html#LiuSWSDW25 streams/conf/icdm Yiran Qiao 0003 Xiang Ao 0001 Yang Liu 0200 Jiarong Xu Xiaoqian Sun Qing He 0003 LOGIN: A Large Language Model Consulted Graph Neural Network Training Framework. 232-241 2025 WSDM https://doi.org/10.1145/3701551.3703488 conf/wsdm/2025 db/conf/wsdm/wsdm2025.html#QiaoALXSH25

Yifan Xu 0025 Nicole Adler Sebastian Wandelt Xiaoqian Sun Competitive integrated airline schedule design and fleet assignment. 32-50 2024 April 314 Eur. J. Oper. Res. 1 https://doi.org/10.1016/j.ejor.2023.09.029 db/journals/eor/eor314.html#XuAWS24

Sebastian Wandelt Shuang Wang Changhong Zheng Xiaoqian Sun AERIAL: A Meta Review and Discussion of Challenges Toward Unmanned Aerial Vehicle Operations in Logistics, Mobility, and Monitoring. 6276-6289 2024 July 25 IEEE Trans. Intell. Transp. Syst. 7 https://doi.org/10.1109/TITS.2023.3343713 https://www.wikidata.org/entity/Q125063027 db/journals/tits/tits25.html#WandeltWZS24

Shuang Wang Sebastian Wandelt Xiaoqian Sun Stratified p-Hub Median and Hub Location Problems: Models and Solution Algorithms. 11452-11470 2024 September 25 IEEE Trans. Intell. Transp. Syst. 9 https://doi.org/10.1109/TITS.2024.3415658 db/journals/tits/tits25.html#WangWS24 streams/journals/tits

Yiran Qiao 0003 Xiang Ao 0001 Yang Liu 0200 Jiarong Xu Xiaoqian Sun Qing He 0003 LOGIN: A Large Language Model Consulted Graph Neural Network Training Framework. 2024 abs/2405.13902 CoRR https://doi.org/10.48550/arXiv.2405.13902 db/journals/corr/corr2405.html#abs-2405-13902

Meng Li Sebastian Wandelt Kaiquan Cai Xiaoqian Sun Machine learning augmented approaches for hub location problems. 106188 2023 June 154 Comput. Oper. Res. https://doi.org/10.1016/j.cor.2023.106188 db/journals/cor/cor154.html#LiWCS23

Kai Du Min Wang 0004 Tom Lu Xiaoqian Sun Estimation based on hybrid censored data from the power Lindley distribution. 3939-3957 2023 August 52 Commun. Stat. Simul. Comput. 8 https://doi.org/10.1080/03610918.2021.1951758 db/journals/cssc/cssc52.html#DuWLS23

Sebastian Wandelt Yifan Xu Xiaoqian Sun Measuring node importance in air transportation systems: On the quality of complex network estimations. 109596 2023 December 240 Reliab. Eng. Syst. Saf. https://doi.org/10.1016/j.ress.2023.109596 db/journals/ress/ress240.html#WandeltXS23

Yifan Xu 0025 Sebastian Wandelt Xiaoqian Sun IMMUNER: Integrated Multimodal Mobility Under Network Disruptions. 1480-1494 2023 February 24 IEEE Trans. Intell. Transp. Syst. 2 https://doi.org/10.1109/TITS.2022.3224413 db/journals/tits/tits24.html#XuWS23

Wendong Bi Xueqi Cheng Bingbing Xu 0001 Xiaoqian Sun Easton Li Xu Huawei Shen Bridged-GNN: Knowledge Bridge Learning for Effective Knowledge Transfer. 99-109 2023 CIKM https://doi.org/10.1145/3583780.3614796 https://www.wikidata.org/entity/Q131015842 conf/cikm/2023 db/conf/cikm/cikm2023.html#BiCXSXS23 Wendong Bi Bingbing Xu 0001 Xiaoqian Sun Easton Li Xu Huawei Shen Xueqi Cheng Predicting the Silent Majority on Graphs: Knowledge Transferable Graph Neural Network. 274-285 2023 WWW https://doi.org/10.1145/3543507.3583287 https://www.wikidata.org/entity/Q130960190 conf/www/2023 db/conf/www/www2023.html#BiXSXSC23

Wendong Bi Bingbing Xu 0001 Xiaoqian Sun Zidong Wang 0007 Huawei Shen Xueqi Cheng Company-as-Tribe: Company Financial Risk Assessment on Tribe-Style Graph with Hierarchical Graph Neural Networks. 2023 abs/2301.13492 CoRR https://doi.org/10.48550/arXiv.2301.13492 db/journals/corr/corr2301.html#abs-2301-13492

Wendong Bi Bingbing Xu 0001 Xiaoqian Sun Easton Li Xu Huawei Shen Xueqi Cheng Predicting the Silent Majority on Graphs: Knowledge Transferable Graph Neural Network. 2023 abs/2302.00873 CoRR https://doi.org/10.48550/arXiv.2302.00873 db/journals/corr/corr2302.html#abs-2302-00873

Wendong Bi Xueqi Cheng Bingbing Xu 0001 Xiaoqian Sun Easton Li Xu Huawei Shen Bridged-GNN: Knowledge Bridge Learning for Effective Knowledge Transfer. 2023 abs/2308.09499 CoRR https://doi.org/10.48550/arXiv.2308.09499 db/journals/corr/corr2308.html#abs-2308-09499

Liting Chen Sebastian Wandelt Weibin Dai Xiaoqian Sun Scalable Vertiport Hub Location Selection for Air Taxi Operations in a Metropolitan Region. 834-856 2022 34 INFORMS J. Comput. 2 https://doi.org/10.1287/ijoc.2021.1109 db/journals/informs/informs34.html#ChenWDS22

Sebastian Wandelt Wei Lin Xiaoqian Sun Massimiliano Zanin From random failures to targeted attacks in network dismantling. 108146 2022 218 Reliab. Eng. Syst. Saf. Part https://doi.org/10.1016/j.ress.2021.108146 db/journals/ress/ress218.html#WandeltLSZ22

Wei Lin Sebastian Wandelt Xiaoqian Sun Efficient network dismantling through genetic algorithms. 3107-3125 2022 26 Soft Comput. 6 https://doi.org/10.1007/s00500-021-06475-w db/journals/soco/soco26.html#LinWS22

Weibin Dai Sebastian Wandelt Jun Zhang 0007 Xiaoqian Sun Capacitated Air/Rail Hub Location Problem With Uncertainty: A Model, Efficient Solution Algorithm, and Case Study. 8451-8466 2022 23 IEEE Trans. Intell. Transp. Syst. 7 https://doi.org/10.1109/TITS.2021.3082781 db/journals/tits/tits23.html#DaiW0S22

Qingnan Rong Jun Zhang 0007 Xiaoqian Sun Sebastian Wandelt Massimiliano Zanin Liang Tian Optimal Cost-Based Strengthening of Complex Networks. 1117-1127 2022 9 IEEE Trans. Netw. Sci. Eng. 3 https://doi.org/10.1109/TNSE.2021.3132703 db/journals/tnse/tnse9.html#RongZSWZT22

Xu Ma Xiaoqian Sun Yuduo Wu Zheli Liu Xiaofeng Chen 0001 Changyu Dong Differentially Private Byzantine-Robust Federated Learning. 3690-3701 2022 33 IEEE Trans. Parallel Distributed Syst. 12 https://doi.org/10.1109/TPDS.2022.3167434 db/journals/tpds/tpds33.html#MaSWLCD22

Sebastian Wandelt Weibin Dai Jun Zhang 0007 Xiaoqian Sun Toward a Reference Experimental Benchmark for Solving Hub Location Problems. 543-564 2022 56 Transp. Sci. 2 https://doi.org/10.1287/trsc.2021.1094 https://www.wikidata.org/entity/Q114058116 db/journals/transci/transci56.html#WandeltDZS22

Wendong Bi Bingbing Xu 0001 Xiaoqian Sun Zidong Wang 0007 Huawei Shen Xueqi Cheng Company-as-Tribe: Company Financial Risk Assessment on Tribe-Style Graph with Hierarchical Graph Neural Networks. 2712-2720 2022 KDD https://doi.org/10.1145/3534678.3539129 https://www.wikidata.org/entity/Q131018975 conf/kdd/2022 db/conf/kdd/kdd2022.html#BiXSWSC22

Sebastian Wandelt Weibin Dai Jun Zhang 0007 Qiuhong Zhao Xiaoqian Sun An efficient and scalable approach to hub location problems based on contraction. 106955 2021 151 Comput. Ind. Eng. https://doi.org/10.1016/j.cie.2020.106955 db/journals/candie/candie151.html#WandeltDZZS21

Sebastian Wandelt Xing Shi Xiaoqian Sun Estimation and improvement of transportation network robustness by exploiting communities. 107307 2021 206 Reliab. Eng. Syst. Saf. https://doi.org/10.1016/j.ress.2020.107307 db/journals/ress/ress206.html#WandeltSS21

Sebastian Wandelt Xing Shi Xiaoqian Sun Complex Network Metrics: Can Deep Learning Keep up With Tailor-Made Reference Algorithms? 68114-68123 2020 8 IEEE Access https://doi.org/10.1109/ACCESS.2020.2984762 db/journals/access/access8.html#WandeltSS20

Sebastian Wandelt Xing Shi Xiaoqian Sun Massimiliano Zanin Community Detection Boosts Network Dismantling on Real-World Networks. 111954-111965 2020 8 IEEE Access https://doi.org/10.1109/ACCESS.2020.3002807 db/journals/access/access8.html#WandeltSSZ20

Sebastian Wandelt Xing Shi Xiaoqian Sun Approximation of Interactive Betweenness Centrality in Large Complex Networks. 4046027:1-4046027:16 2020 2020 Complex. https://doi.org/10.1155/2020/4046027 db/journals/complexity/complexity2020.html#WandeltSS20

Xiaoqian Sun Sebastian Wandelt Anming Zhang On the degree of synchronization between air transport connectivity and COVID-19 cases at worldwide level. 2020 abs/2007.08412 CoRR https://arxiv.org/abs/2007.08412 db/journals/corr/corr2007.html#abs-2007-08412

Sebastian Wandelt Xing Shi Xiaoqian Sun Scalability of Betweenness Approximation Algorithms: An Experimental Review. 104057-104071 2019 7 IEEE Access https://doi.org/10.1109/ACCESS.2019.2927681 https://www.wikidata.org/entity/Q127546390 db/journals/access/access7.html#WandeltSS19

Weibin Dai Jun Zhang 0007 Xiaoqian Sun Sebastian Wandelt HUBBI: Iterative network design for incomplete hub location problems. 394-414 2019 104 Comput. Oper. Res. https://doi.org/10.1016/j.cor.2018.09.011 https://www.wikidata.org/entity/Q129142483 db/journals/cor/cor104.html#DaiZSW19

Qingnan Rong Jun Zhang 0007 Xiaoqian Sun Sebastian Wandelt Network Strengthening Against Malicious Attacks. 761-772 2019 COMPLEX NETWORKS (1) https://doi.org/10.1007/978-3-030-36687-2_63 conf/complexnetworks/2019-1 db/conf/complexnetworks/complexnetworks2019-1.html#RongZSW19

Massimiliano Zanin Ernestina Menasalvas Xiaoqian Sun Sebastian Wandelt From the Difference of Structures to the Structure of the Difference. 4326097:1-4326097:12 2018 2018 Complex. https://doi.org/10.1155/2018/4326097 db/journals/complexity/complexity2018.html#ZaninMSW18

Sebastian Wandelt Xiaoqian Sun Massimiliano Zanin Shlomo Havlin QRE: Quick Robustness Estimation for large complex networks. 413-424 2018 83 Future Gener. Comput. Syst. https://doi.org/10.1016/j.future.2017.02.018 db/journals/fgcs/fgcs83.html#WandeltSZH18

Sebastian Wandelt Xiaoqian Sun Ulf Leser Column-wise compression of open relational data. 48-61 2018 457-458 Inf. Sci. https://doi.org/10.1016/j.ins.2018.04.074 db/journals/isci/isci457.html#WandeltSL18

Sebastian Wandelt Xiaoqian Sun Hartmut Fricke ADS-BI: Compressed Indexing of ADS-B Data. 3795-3806 2018 19 IEEE Trans. Intell. Transp. Syst. 12 https://doi.org/10.1109/TITS.2017.2784371 db/journals/tits/tits19.html#WandeltSF18

Sebastian Wandelt Xiaoqian Sun Robustness Estimation of Infrastructure Networks: On the Usage of Degree Centrality. 45:1-45:7 2018 ARES https://doi.org/10.1145/3230833.3232822 conf/IEEEares/2018 db/conf/IEEEares/ares2018.html#WandeltS18

Sebastian Wandelt Zezhou Wang Xiaoqian Sun Worldwide Railway Skeleton Network: Extraction Methodology and Preliminary Analysis. 2206-2216 2017 18 IEEE Trans. Intell. Transp. Syst. 8 https://doi.org/10.1109/TITS.2016.2632998 db/journals/tits/tits18.html#WandeltWS17

Weibin Dai Jun Zhang 0007 Xiaoqian Sun Sebastian Wandelt General contraction method for uncapacitated single allocation p-hub median problems. 1-8 2017 SSCI https://doi.org/10.1109/SSCI.2017.8285321 conf/ssci/2017 db/conf/ssci/ssci2017.html#DaiZSW17 Yifan Xu Weibin Dai Xiaoqian Sun Sebastian Wandelt Improved benders decomposition for capacitated hub location problem with incomplete hub networks. 1-8 2017 SSCI https://doi.org/10.1109/SSCI.2017.8285341 conf/ssci/2017 db/conf/ssci/ssci2017.html#XuDSW17

Shiyi Tu Min Wang 0004 Xiaoqian Sun Bayesian analysis of two-piece location-scale models under reference priors with partial information. 133-144 2016 96 Comput. Stat. Data Anal. https://doi.org/10.1016/j.csda.2015.11.002 https://www.wikidata.org/entity/Q58045618 db/journals/csda/csda96.html#TuWS16

Min Wang 0004 Xiaoqian Sun Chanseok Park Bayesian analysis of Birnbaum-Saunders distribution via the generalized ratio-of-uniforms method. 207-225 2016 31 Comput. Stat. 1 https://doi.org/10.1007/s00180-015-0629-z https://www.wikidata.org/entity/Q58045637 db/journals/cstat/cstat31.html#0004SP16

Sebastian Wandelt Xiaoqian Sun Yanbo Zhu Lossless Compression of Public Transit Schedules. 3075-3086 2016 17 IEEE Trans. Intell. Transp. Syst. 11 https://doi.org/10.1109/TITS.2016.2542131 db/journals/tits/tits17.html#WandeltSZ16

Sebastian Wandelt Xiaoqian Sun Efficient and Accurate Robustness Estimation for Large Complex Networks. 2016 abs/1608.03988 CoRR http://arxiv.org/abs/1608.03988 db/journals/corr/corr1608.html#WandeltS16

Min Wang 0004 Xiaoqian Sun Tao Lu 0004 Bayesian structured variable selection in linear regression models. 205-229 2015 30 Comput. Stat. 1 https://doi.org/10.1007/s00180-014-0529-7 https://www.wikidata.org/entity/Q58045647 db/journals/cstat/cstat30.html#0004SL15

Sebastian Wandelt Xiaoqian Sun Efficient Compression of 4D-Trajectory Data in Air Traffic Management. 844-853 2015 16 IEEE Trans. Intell. Transp. Syst. 2 https://doi.org/10.1109/TITS.2014.2345055 db/journals/tits/tits16.html#WandeltS15

Min Wang 0004 Xiaoqian Sun Bayesian inference for the correlation coefficient in two seemingly unrelated regressions. 2442-2453 2012 56 Comput. Stat. Data Anal. 8 https://doi.org/10.1016/j.csda.2012.01.021 https://www.wikidata.org/entity/Q58045692 db/journals/csda/csda56.html#WangS12

Thomas J. Fisher Xiaoqian Sun Improved Stein-type shrinkage estimators for the high-dimensional multivariate normal covariance matrix. 1909-1918 2011 55 Comput. Stat. Data Anal. 5 https://doi.org/10.1016/j.csda.2010.12.006 db/journals/csda/csda55.html#FisherS11

Thomas J. Fisher Xiaoqian Sun Colin M. Gallagher A new test for sphericity of the covariance matrix for high dimensional data. 2554-2570 2010 101 J. Multivar. Anal. 10 https://doi.org/10.1016/j.jmva.2010.07.004 db/journals/ma/ma101.html#FisherSG10

Xumeng Li F. Alex Feltus Xiaoqian Sun James Zijun Wang Feng Luo 0001 A non-parameter Ising model for network-based identification of differentially expressed genes in recurrent breast cancer patients. 214-217 2010 BIBM https://doi.org/10.1109/BIBM.2010.5706565 https://doi.ieeecomputersociety.org/10.1109/BIBM.2010.5706565 conf/bibm/2010 db/conf/bibm/bibm2010.html#LiFSWL10 Xiaoqian Sun Yongchang Li Evaluation of control system performance using Multiple Criteria Decision Making techniques. 3718-3723 2010 CDC https://doi.org/10.1109/CDC.2010.5717809 conf/cdc/2010 db/conf/cdc/cdc2010.html#SunL10

Xiaoqian Sun Zhuoqiong He Jing Zhang John Kabrick Bayesian spatial models with repeated measurements: with application to the herbaceous data analysis. 585-601 2009 18 Stat. Methods Appl. 4 https://doi.org/10.1007/s10260-009-0114-3 db/journals/sma/sma18.html#SunHZK09

Xiaoqian Sun Zhuoqiong He John Kabrick Bayesian spatial prediction of the site index in the study of the Missouri Ozark Forest Ecosystem Project. 3749-3764 2008 52 Comput. Stat. Data Anal. 7 https://doi.org/10.1016/j.csda.2007.12.019 db/journals/csda/csda52.html#SunHK08

Nicole Adler Xiang Ao 0001 Wendong Bi Kaiquan Cai Kangzhuo Chen Liting Chen Xiaofeng Chen 0001 Xinyue Chen Xueqi Cheng Weibin Dai Jianqiu Deng Changyu Dong Kai Du F. Alex Feltus Thomas J. Fisher Hartmut Fricke Colin M. Gallagher Shlomo Havlin Qing He 0003 Zhuoqiong He John Kabrick Ulf Leser Meng Li Xumeng Li Yongchang Li Wei Lin Shuoling Liu Yang Liu 0200 Zheli Liu Tao Lu 0004 Tom Lu Feng Luo 0001 Xu Ma Chao Pang 0001 Chanseok Park Yiran Qiao 0003 Qingnan Rong Ernestina Menasalvas RuizErnestina Menasalvas Yiran Shan Huawei Shen Xing Shi Liang Tian Shiyi Tu Sebastian Wandelt James Zijun Wang Jingchu Wang Min Wang 0004 Shuang Wang Xiangyu Wang Zezhou Wang Zidong Wang 0007 Xingxing Weng Hui Wu Yuduo Wu Gui-Song Xia Bin Xie Bingbing Xu 0001 Easton Li Xu Jiarong Xu Yifan Xu Yifan Xu 0025 Yige Yuan Massimiliano Zanin Anming Zhang Jing Zhang Jun Zhang 0007 Qiuhong Zhao Changhong Zheng Yanbo Zhu