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Alex Sim,SDD, Lawrence Berkeley National Laboratory
ASim@lbl.gov 510-600-3562 https://www.linkedin.com/in/alexsim/  

Conference papers
Journal articles and book chapters
Technical reports and others
Specifications and other contributions
Technical reports and others
  1. K. Wang, C. S. Lee, S. Lee, V. Gupta, J. Balewski, A. Sim, P. Nugent, A. Agrawal, A. Choudhary, K. Wu, W. Liao, "Multi-Resolution Model Fusion for Accelerating the Convolutional Neural Network Training", arXiv, 2025. doi:10.48550/arXiv.2510.25170.
  2. J. Wang, K. Wu, A. Sim, S. Hwangbo, Feature Engineering and Classification Models for Partial Discharge in Power Transformers", arXiv, 2022, doi: 10.48550/arXiv.2210.12216.
  3. J. Kim, M. Cafaro, J. Chou, A. Sim, "SNTA’22: The 5th Workshop on Systems and Network Telemetry and Analytics", In the proceedings of The 31st ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC'22), 2022. doi:10.1145/3502181.3535108.
  4. D. Bard, C. Snavely, L. Gerhardt, J. Lee, B. Totzke, K. Antypas, W. Arndt, J. Blaschke, S. Byna, R. Cheema, S. Cholia, M. Day, B. Enders, A. Gaur, A. Greiner, T. Groves, M. Kiran, Q. Koziol, T. Lehman, K. Rowland, C. Samuel, A. Selvarajan, A. Sim, D. Skinner, L. Stephey, R. Thomas, G. Torok, "LBNL Superfacility Project Report", Lawrence Berkeley National Laboratory, 2022. doi:10.48550/arXiv.2206.11992. https://escholarship.org/uc/item/6tm8m61q.
  5. J. Kim, M. Jin, Y. Homma, A. Sim, W. Kroeger, K. Wu, “Extract Dynamic Information To Improve Time Series Modeling: a Case Study with Scientific Workflow”, arxiv.org, 2022. doi:/10.48550/arXiv.2205.09703.
  6. A. Sim, E. Kissel, C. Guok, "Deploying in-network caches in support of distributed scientific data sharing", the US Community Study on the Future of Particle Physics (Snowmass 2021), 2022. doi:/10.48550/arXiv.2203.06843. https://arxiv.org/abs/2203.06843.
  7. K. Wu, B. Dong, A. Sim, “Automating Data Management Through Unified Runtime Systems", DOE ASCR Workshop on the Management and Storage of Scientific Data, 2022. doi:10.2172/1843500.
  8. K. Wu, B. Brown, P. Calafiura, Q. Koziol, D. Lee, A. Sim, D. Tiwari, “Support for In-Flight Data Analyses in Scientific Workflows", DOE ASCR Workshop on the Management and Storage of Scientific Data, 2022. doi:10.2172/1843500.
  9. Y. Ma, F. Rusu, K. Wu, A. Sim, "Adaptive Elastic Training for Sparse Deep Learning on Heterogeneous Multi-GPU Servers", arxiv preprint arXiv:110.07029, 2021.
  10. J. Kim, A. Sim, J. Kim, K, Wu, J. Hahm, "Improving Botnet Detection with Recurrent Neural Network and Transfer Learning", arXiv preprint arXiv:2104.12602, 2021.
  11. C. A. Spurlock, A. Gopal, J. Auld, P. Leiby, C. Sheppard, T. Wenzel, S. Belal, A. Duvall, A. Enam, S. Fujita, A. Henao, L. Jin, E. Kontou, A. Lazar, Z. Needell, C. Rames, T. Rashidi, J. Sears, A. Sim, M. Stinson, M. Taylor, A. Todd-Blick, O. Verbas, V. Walker, J. Ward, G. Wong-Parodi, K. Wu, H.-C. Yang, "SMART Mobility, Mobility Decision Science Capstone Report", Vehicle Technologies Office (VTO), Office of Energy Efficiency and Renewable Energy (EERE), US Department of Energy, July 2020. URL (PDF)
  12. A. Hanushevsky, A. Sim, W. Yang, "Accelerating Remote Data Processing for Science with Network Caching", DOE Community of Interest Workshop on Future Scientific Methodologies, 2020.
  13. S. Byna, K. Wu, Q. Koziol, A. Sim, "Connecting Scientific Data and Knowledge"", DOE Community of Interest Workshop on Future Scientific Methodologies, 2020.
  14. M. Kiran, A. Sim, S. Peisert, "Intent-Driven IoT Network Configurations", DOE 5G Enabled Energy Innovation Workshop (5GEEIW), 2020.
  15. S. Marques, K. Wu, A. Sim, A. Spurlock, A. Todd, "Machine Learning Techniques for Real-Time Decision Support", DOE Scientific Machine Learning Workshop (SciML2018), 2018.
  16. J. Kim, A. Sim, "A New Approach to Network Monitoring using Clustered Patterns", US-Korea Conference on Science, Technology, and Entrepreneurship (UKC2016), 2016.
  17. John Wu, Alex Sim, Dula Parkinson, "Connecting large experimental facility and computing facility with streaming analytics", DOE Streaming Technology Requirements, Application and Middleware Workshop (STREAM2016), 3/2016.
  18. Scott Klasky, C. S. Chang, Jong Choi, Michael Churchill, Tahsin Kurc, Manish Parashar, Alex Sim, Matthew Wolf, John Wu, "Stream Processing for Remote Collaborative Data Analysis", DOE Streaming Technology Requirements, Application and Middleware Workshop (STREAM2016), 3/2016.
  19. A. Sim, K. Wu, "Challenges to Support Real-time Applications: a science version of Internet of Things", DOE Network 2025 Challenges workshop, 2/2016.
  20. A. Sim, J. Kim, K. Wu, "Know Thyself: Monitoring Wide-Area Network for Science Applications", DOE Network 2025 Challenges workshop, 2/2016.
  21. J. Kim, A. Sim, "Peeking Network States with Clustered Patterns", LBNL-1003744, 10/2015
  22. L. Wu, K. Wu, A. Sim, M. Churchill, J. Y. Choi, A. Stathopoulos, C.S. Chang, S. Klasky, "Towards Real-Time Detection and Tracking of Blob-Filaments in Fusion Plasma Big Data", WM-CS-2015-01, Department of Computer Science, College of William and Mary, 1/2015
  23. "Beware Overfitting Models Even if They Win Baseball Bets", Bloomberg, by Michael P. Regan, Oct 30, 2014. http://www.bloomberg.com/news/2014-10-30/beware-overfitting-models-even-if-they-win-baseball-bets.html
  24. D. H. Bailey, S. Ger, M. L. de Prado, A. Sim, K. Wu, "Statistical Overfitting and Backtest Performance", Social Science Research Network (SSRN), 7 Oct 2014. http://ssrn.com/abstract=2507040
    • Top Ten download list for Derivatives eJournal, 10/26/2014
    • Top Ten download list for Capital Markets: Market Efficiency eJournal, 10/31/2014
    • Top Ten download list for Econometric Modeling: Financial Markets - Capital Markets eJournals, 10/31/2014
    • Top Ten download list for Mutual Funds, Hedge Funds, & Investment Industry eJournal, 10/31/2014
  25. W. Yoo, A. Sim, "Network Bandwidth Utilization Forecast Model on High Bandwidth Network", LBNL-6677E, 2014
  26. "Powering Global Climate Science", HPC Wire, 4/10/2014. http://www.hpcwire.com/2014/04/10/powering-global-climate-science/
  27. J. Choi, K. Hu, A. Sim, "Relational Dynamic Bayesian Networks with Locally Exchangeable Measures", LBNL-6341E, 2013
  28. K. Hu, , J. Choi, J. Jiang, A. Sim, "Best Predictive GLMM using LASSO with Application on High-Speed Network", LBNL-6327E, 2013
  29. K. Hu, A. Sim, D. Antoniades, C. Dovrolis, "Statistical Prediction Models for Network Traffic Performance", the APAN 35 conference and the Winter 2013 ESCC/Internet2 Joint Techs meeting, (TIP2013), 2013
  30. "NSF Makes Awards to Improve Campus Networking in Support of Data-Intensive Science", NSF news article, 10/12/2012. http://www.nsf.gov/news/news_summ.jsp?cntn_id=125697
  31. "A 100-Gigabit Highway for Science", ESnet news article, 4/30/2012. http://www.es.net/news-and-publications/esnet-news/2012/a-100-gigbit-highway-for-science/
  32. "Big Data Across the Federal Government", Office of Science and Technology Policy, Executive Office of the President, White House, 3/29/2012. http://www.whitehouse.gov/sites/default/files/microsites/ostp/big_data_fact_sheet_final.pdf
  33. Mehmet Balman, Eric Pouyoul, Yushu Yao, E. Wes Bethel, Burlen Loring, John Shalf, Alex Sim, Brian L. Tierney, "Experiences with 100Gbps Network Applications", LBNL Technical Report, LBNL-5603E, 2012
  34. Mehmet Balman, Alex Sim, "Scaling the Earth System Grid to 100Gbps Networks", LBNL Technical Report, LBNL-5794E, 2012
  35. D. Yu, D. Katramatos, A. Shoshani, A. Sim, J. Gu, V. Natarajan, "StorNet: Integrating Storage Resource Management with Dynamic Network Provisioning for Automated Data Transfer", ICFA SCIC 2012 Report Appendices Networking for High Energy Physics, pp 73-74, International Committee for Future Accelerators (ICFA) Standing Committee on Inter-Regional Connectivity (SCIC), 2/2012
  36. D. Williams, A. Shoshani, A. Sim, et al., "Earth System Grid Center for Enabling Technologies (ESG-CET): A Data Infrastructure for Data-Intensive Climate Research", SciDAC conference 2011, 7/2011
  37. A. Shoshani, D. Rotem, A. Sim, K. Wu, et al., "The Scientific Data Management Center: Available Technologies and Highlights", SciDAC conference 2011, 7/2011
  38. M. Balman, E. Chaniotakis, A. Shoshani, A. Sim, "A New Approach in Advance Network Reservation and Provisioning for High-Performance Scientific Data Transfers", LBNL Technical Report, LBNL-4091E, 2010
  39. A. Sim, M. Balman, D. Williams, A. Shoshani, V. Natarajan, "Bulk Data Movement for Climate Dataset: Efficient Data Transfer Management with Dynamic Transfer Adjustment", LBNL-3985E, 2010
  40. A. Sim, D. Gunter, V. Natarajan, A. Shoshani, D. Williams, J. Long, J. Hick, J. Lee, E. Dart, "Efficient Bulk Data Replication for the Earth System Grid", LBNL-3821E, 2010
  41. Alex Sim, Dean Williams, "Experience Report on the Supercomputing 2009 Bandwidth Challenge from the Perspective of the Earth System Grid", ESG, 2009
  42. M. Balman, E. Chaniotakis, A. Shoshani, A. Sim, "Advance Network Reservation and Provisioning for Science", LBNL Technical Report, LBNL-3731E, 2009
  43. Eli Dart, Alex Sim, Brian Tierney, Dean N. Williams, "Scaling the Earth System Grid to 100 Gbps: Network Architecture Challenges", DOE, 2009
  44. A. Sim, J. Gu, V. Natarajan, A. Shoshani, "Berkeley Storage Manager (BeStMan) Version 2.2: Administrative Guide", LBNL, 2009
  45. A. Sim, V. Natarajan, J. Gu, A. Shoshani, "SRM Client tools: Users Guide", LBNL, 2009
  46. A. Sim, V. Natarajan, J. Gu, A. Shoshani, "SRM Client Java API: Users Guide", LBNL, 2009
  47. A. Sim, J. Gu, V. Natarajan, A. Shoshani, "Berkeley Storage Manager (BeStMan) Version 2.2: Users Guide and Administrative Manual", LBNL, 2007
  48. A. Sim, V. Natarajan, "Grid Interoperability Now (GIN) SRM Interoperability Testing Results", https://sdm.lbl.gov/srm-tester/ggf18.html, 9/2006
  49. A. Sim, V. Natarajan, "Grid Interoperability Now (GIN) SRM Interoperability Testing Results", https://sdm.lbl.gov/srm-tester/ggf17.html, 5/2006
  50. A. Sim, A. Shoshani, T. Perelmutov, "SRMs client and servers in SRM version 1.1: Current Status for OSG", Open Science Grid, 2005
  51. A. Sim, A. Shoshani, "DataMoverLite Authorization Scheme: Overview and User-cases", Earth Systems Grid II, 2004
  52. A. Sim, A. Shoshani, "The DataMoverLite Authorization Process", Earth Systems Grid II, 2004
  53. K. Wu, W. Zhang, A. Sim, J. Gu, A. Shoshani, "Grid Collector: an Event Catalog with Automated File Management", LBNL-55563, 2004
  54. A. Sim, J. Gu, V. Natarajan, A. Shoshani, "Berkeley DRM Version 1.2.x in VDT: Instructions and trouble shooting guide", LBNL, 2004
  55. A. Sim, J. Gu, V. Natarajan, A. Shoshani, "Berkeley HRM Version 1.2.x: Instructions and trouble shooting guide", LBNL, 2004
  56. Alex Sim, "Secure Selective File Sharing on the Grid", LBNL LDRD, 2004
  57. A. Shoshani, P. Kunszt, A. Sim, "Grid Storage Management Working Group Charter", GGF Data area, 2004
  58. A. Sim, J. Gu, V. Natarajan, A. Shoshani, "DataMover Users Guide", LBNL, 2004
  59. A. Sim, J. Gu, V. Natarajan, A. Shoshani, "HRM Administrative Guide", LBNL, 2004
  60. Alex Sim, "Berkeley SRM, LBNL Design of SRM version 2.1", LBNL, 2004
  61. A. Sim, D. Horn, A. Shoshani, "GSI over HTTP for HRM Web Services Gateway", Earth Systems Grid II, 2002
  62. A. Sim, J. Gu, A. Shoshani, "Multiple File Transport Using HRM", Earth Systems Grid II, 2002
  63. A. Sim, A. Shoshani, J. Kim, "Progress on CORBA SSL and GSI", LBNL, 2001
  64. L.M. Bernardo, D. Rotem, A. Shoshani, H. Nordberg, A. Sim, "Using Access Patterns to Partition Large Datasets on Tertiary Storage in Order to Minimize Retrieval Costs", LBNL-41504, 1998
  65. A. Sim, B. Parvin, P. Keagy, "Invariant Representation and Hierarchical Network for Inspection of Nuts from X-ray Images", LBL-37649, 1995
  66. A. Sim, B. Parvin, P. Keagy, "Machine Vision Inspection of Insect Infested Pistachio Nuts from X-ray Images", LBL-36970, 1995

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