Alex Sim

B. Fan, A. Sim, K. Wu, J. Kim, "Conditional Recurrent Neural Networks for Enhancing Throughput Prediction and Slow File Transfers Detection in Large Science Workflows", 22nd IEEE Consumer Communications & Networking Conference (CCNC 2025), 2025,

B. Dong, A. Nayak, K. Wu, V. Tribaldos, J. Ajo-Franklin, Q. Zhang, S. Byna, F. Guo, P. Dobson, A. Sim, "TensorSearch: Parallel Similarity Search on Tensors", IEEE International Conference on Big Data (BigData), 2024,

• Download File: TensorSearch-final-version-paper.pdf (pdf: 6.2 MB)

V. Lakshminarayana, C. Oguchi, A. Sim, K. Wu, D. Ghosal, "A Study of a Deterministic Networking Framework for Latency Critical Large Scientific Data Transfers", 11th Annual International Workshop on Innovating the Network for Data-Intensive Science (INDIS 2024), 2024,

M. Schreyer, T. Sattarov, A. Sim, K. Wu, "Imb-FinDiff: Conditional Diffusion Models for Class Imbalance Synthesis of Financial Tabular Data", 5th ACM International Conference on AI in Finance (ICAIF'24), 2024, doi: 10.1145/3677052.3698659

D.K. Sung, Y. Son, A. Sim, K. Wu, S. Byna, H. Tang, H. Eom, C. Kim, S. Kim, "A2FL: Autonomous and Adaptive File Layout in HPC through Real-time Access Pattern Analysis", 38th IEEE International Parallel & Distributed Processing Symposium (IPDPS2024), 2024,

L. Zhou, Q. Lin, K. Chowdhury, S. Masood, A. Eichenberger, H. Min, A. Sim, J. Wang, Y. Wang, K. Wu, B. Yuan, J. Zou, "Serving Deep Learning Model in Relational Databases", 27th International Conference on Extending Database Technology (EDBT2024), 2024,

A, Sharma, X. Li, H. Guan, G. Sun, L. Zhang, L. Wang, K. Wu, L. Cao, E. Zhu, A. Sim, T. Wu, J. Zou, "Automatic Data Transformation Using Large Language Model – An Experimental Study on Building Energy Data", IEEE International Conference on Big Data (BigData), 2023,

C. M. Oguchi, D. Ghosal, A. Sim, K. Wu, "Counterfactual Analysis: A Case Study on Impact of External Events on Building Energy Consumption", International Workshop on Big Data Analytics for Sustainability (BDA4S), 2023,

A. Sim, E. Kissel, D. Hazen, C. Guok, "Experiences in deploying in-network data caches", 26th International Conference on Computing in High Energy & Nuclear Physics (CHEP2023), 2023, doi: 10.1051/epjconf/202429507018

J. Bellavita, C. Sim, K. Wu, A. Sim, S. Yoo, H. Ito, V. Garonne, E. Lancon, "Understanding Data Access Patterns for dCache System", 26th International Conference on Computing in High Energy & Nuclear Physics (CHEP2023), 2023, doi: 10.1051/epjconf/202429501053

C. Sim, K. Wu, A. Sim, I. Monga, C. Guok, D. Hazen, F. Würthwein, D. Davila, H. Newman, J. Balcas, "Predicting Resource Utilization Trends with Southern California Petabyte Scale Cache", 26th International Conference on Computing in High Energy & Nuclear Physics (CHEP2023), 2023, doi: 10.1051/epjconf/202429501044

Z. Deng, A. Sim, K. Wu, C. Guok, I. Monga, F. Andrijauskas, F. Wuerthwein, D. Weitzel, "Analyzing Transatlantic Network Traffic Patterns with Scientific Data Caches", 6th ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA 2023), 2023, doi: 10.1145/3589012.3594897

C. Sim, K. Wu, A. Sim, I. Monga, C. Guok, F. Wurthwein, D. Davila, H. Newman, J. Balcas, "Effectiveness and predictability of in-network storage cache for Scientific Workflows", International Conference on Computing, Networking and Communication (ICNC 2023), 2023, doi: 10.1109/ICNC57223.2023.10074058

R. Shao, J. Kim A. Sim, K. Wu, "Predicting Slow Connections in Scientific Computing", 5th ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA) 2022, in conjunction with The 31st ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC), 2022, doi: 10.1145/3526064.3534112

J. Bellavita, A. Sim, K. Wu, I. Monga, C. Guok, F. Würthwein, D. Davila, "Studying Scientific Data Lifecycle in On-demand Distributed Storage Caches", 5th ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA) 2022, in conjunction with The 31st ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC), 2022, doi: 10.1145/3526064.3534111

R. Han, A. Sim, K. Wu, I. Monga, C. Guok, F. Würthwein, D. Davila, J. Balcas, H. Newman, "Access Trends of In-network Cache for Scientific Data", 5th ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA), in conjunction with The 31st ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC), 2022, doi: 10.1145/3526064.3534110

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

K. Wang, S. Lee, J. Balewski, A. Sim, P. Nugent, A. Agrawal, A. Choudhary, K. Wu, W-K. Liao, "Using Multi-resolution Data to Accelerate Neural Network Training in Scientific Applications", 22nd IEEE/ACM International Symposium on Cluster, Cloud and Internet Computing (CCGrid 2022), 2022, doi: 10.1109/CCGrid54584.2022.00050

S. Lee, Q. Kang, K. Wang, J. Balewski, A. Sim, A. Agrawal, A. Choudhary, P. Nugent, K. Wu, W-K. Liao, "Asynchronous I/O Strategy for Large-Scale Deep Learning Applications", IEEE International Conference on High Performance Computing, Data & Analytics (HiPC2021), 2021, doi: 10.1109/HiPC53243.2021.00046

J. Bang, C. Kim, K. Wu, A. Sim, S. Byna, H. Sung, H. Eom, "An In-Depth I/O Pattern Analysis in HPC Systems", IEEE International Conference on High Performance Computing, Data & Analytics (HiPC2021), 2021, doi: 10.1109/HiPC53243.2021.00056

A. Lazar, L. Jin, C. Brown, C. A. Spurlock, A. Sim, K. Wu, "Performance of the Gold Standard and Machine Learning in Predicting Vehicle Transactions", the 3rd International Workshop on Big Data Tools, Methods, and Use Cases for Innovative Scientific Discovery (BTSD 2021), 2021, doi: 10.1109/BigData52589.2021.9671286

E. Copps, H. Zhang, A. Sim, K. Wu, I. Monga, C. Guok, F. Würthwein, D. Davila, E. Fajardo, "Analyzing scientific data sharing patterns with in-network data caching", 4th ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA 2021), 2021, doi: 10.1145/3452411.3464441

Y. Wang, K. Wu, A. Sim, S. Yoo, S. Misawa, "Access Patterns of Disk Cache for Large Scientific Archive", 4th ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA 2021), 2021, doi: 10.1145/3452411.3464444

A. Lazar, A. Sim, K. Wu, "GPU-based Classification for Wireless Intrusion Detection", 4th ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA 2021), 2021, doi: 10.1145/3452411.3464445

Y. Ma, F. Ruso, A. Sim, K. Wu, "Adaptive Stochastic Gradient Descent for Deep Learning on Heterogeneous CPU+GPU Architectures", Heterogeneity in Computing Workshop (HCW 2021), in conjunction with the 35th IEEE International Parallel & Distributed Processing Symposium (IPDPS), 2021, doi: 10.1109/IPDPSW52791.2021.00012

B. Weinger, J. Kim, A. Sim, M. Nakashima, N. Moustafa, K. Wu, "Enhancing IoT Anomaly Detection Performance for Federated Learning", The 16th IEEE International Conference on Mobility, Sensing and Networking (IEEE MSN 2020), 2020, doi: 10.1109/MSN50589.2020.00045

B. Cho, T. Dayrit, Y. Gao, Z. Wang, T. Hong, A. Sim, K. Wu, "Effective Missing Value Imputation Methods for Building Monitoring Data", The 2nd International Workshop on Big Data Tools, Methods, and Use Cases for Innovative Scientific Discovery (BTSD 2020) in conjunction with IEEE International Conference on Big Data (IEEE BigData 2020), 2020, doi: 10.1109/BigData50022.2020.9378230

J. Kim, A. Sim, J. Kim, K. Wu, "Botnets Detection Using Recurrent Variational Autoencoder", IEEE Global Communications Conference (Globecom 2020), 2020, doi: 10.1109/GLOBECOM42002.2020.9348169

B. Enders, D. Bard, C. Snavely, L. Gerhardt, J. Lee, B. Totzke, K. Antypas, S. Byna, R. Cheema, S. Cholia, M. Day, A. Gaur, A. Greiner, T. Groves, M. Kiran, Q. Koziol, K. Rowland, C. Samuel, A. Selvarajan, A. Sim, D. Skinner, R. Thomas, G. Torok, "Cross-facility science with the Superfacility Project at LBNL", 2nd Workshop on Large-scale Experiment-in-the-Loop Computing (XLOOP 2020), in conjunction with the International Conference for High Performance Computing, Networking, Storage, and Analysis (SC 20), 2020, doi: 10.1109/XLOOP51963.2020.00006

Sunggon Kim, Alex Sim, Kesheng Wu, Suren Byna, Yongseok Son, Hyeonsang Eom, "Towards hpc i/o performance prediction through large-scale log analysis", Proceedings of the 29th International Symposium on High-Performance Parallel and Distributed Computing (HPDC 2020), 2020, 77--88, doi: 10.1145/3369583.3392678

Gaurav R Ghosal, Dipak Ghosal, Alex Sim, Aditya V Thakur, Kesheng Wu, "A Deep Deterministic Policy Gradient Based Network Scheduler For Deadline-Driven Data Transfers", Proceedings of International Federation for Information Processing (IFIP) Networking Conference (NETWORKING 2020), 2020, 253--261,

Jeeyung Kim, Alex Sim, Jinoh Kim, Kesheng Wu, Jaegyoon Hahm, "Transfer Learning Approach for Botnet Detection Based on Recurrent Variational Autoencoder", ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA 2020), in conjunction with The 29th ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC 2020), 2020, 41--47, doi: 10.1145/3391812.3396273

Jiwoo Bang, Chungyong Kim, Kesheng Wu, Alex Sim, Suren Byna, Sunggon Kim, Hyeonsang Eom, "HPC Workload Characterization Using Feature Selection and Clustering", ACM International Workshop on ​System and Network Telemetry and Analysis (SNTA 2020), in conjunction with The 29th ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC 2020), 2020, 33--40, doi: 10.1145/3391812.3396270

M. Nakashima, A. Sim, J. Kim, "Evaluation of Deep Learning Models for Network PerformancePrediction for Scientific Facilities", the 3rd ACM International Workshop on System and Network Telemetry and Analysis (SNTA) 2020, in conjunction with The 29th ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC), 2020, doi: 10.1145/3391812.3396272

S. Bhandari, A. K. Kukreja, A. Lazar, A. Sim, K. Wu, "Feature Selection and Tree-based Classification for Wireless Intrusion Detection", the 3rd ACM International Workshop on System and Network Telemetry and Analysis (SNTA) 2020, in conjunction with The 29th ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC), 2020, doi: 10.1145/3391812.3396274

Qiao Kang, Alex Sim, Peter Nugent, Sunwoo Lee, Wei-keng Liao, Ankit Agrawal, Alok Choudhary, Kesheng Wu, "Predicting Resource Requirement in Intermediate Palomar Transient Factory Workflow", 20th IEEE/ACM International Symposium on Cluster, Cloud and Internet Computing (CCGRID 2020), 2020, 619--628, doi: 10.1109/CCGrid49817.2020.00-31

H. Sung, J. Bang, C. Kim, H. Kim, A. Sim, G. K. Lockwood, H. Eom, "BBOS: Efficient HPC Storage Management via Burst Buffer Over-Subscription", the 20th IEEE/ACM International Symposium on Cluster, Cloud and Internet Computing (CCGrid 2020), 2020, doi: 10.1109/CCGrid49817.2020.00-79

L. Jin, A. Lazar, J. Sears, A. Todd, A. Sim, K. Wu, C. A. Spurlock, "Life Course as a Contextual System to Investigate the Effects of Life Events, Gender, and Generation on Travel Mode Use", Transportation Research Board (TRB) 99th Annual Meeting, 2020,

A. Lazar, A. Ballow, L. Jin, C. A. Spurlock, A. Sim, K. Wu, "Machine Learning for Prediction of Mid to LongTerm Habitual Transportation Mode Use", International Workshop on Big Data Tools, Methods, and Use Cases for Innovative Scientific Discovery (BTSD), in conjunction with the IEEE International Conference on Big Data (Big Data), 2019, doi: 10.1109/BigData47090.2019.9006411

S. Kim, A. Sim, K. Wu, S. Byna, T. Wang, Y. Son, H. Eom, "DCA-IO: A Dynamic I/O Control Scheme for Parallel and Distributed File System", 19th Annual IEEE/ACM International Symposium in Cluster, Cloud, and Grid Computing (CCGrid 2019), 2019, doi: 10.1109/CCGRID.2019.00049

Sambit Shukla, Dipak Ghosal, Kesheng Wu, Alex Sim, Matthew Farrens, "Co-optimizing Latency and Energy for IoT services using HMP servers in Fog Clusters", 2019 Fourth International Conference on Fog and Mobile Edge Computing (FMEC), 2019, 121--128,

Hanul Sung, Jiwoo Bang, Alexander Sim, Kesheng Wu, Hyeonsang Eom, "Understanding Parallel I/O Performance Trends Under Various HPC Configurations", Proceedings of the ACM Workshop on Systems and Network Telemetry and Analytics, 2019, 29--36,

Mengtian Jin, Youkow Homma, Alex Sim, Wilko Kroeger, Kesheng Wu, "Performance prediction for data transfers in LCLS workflow", Proceedings of the ACM Workshop on Systems and Network Telemetry and Analytics, 2019, 37--44,

Olivia Del Guercio, Rafael Orozco, Alex Sim, Kesheng Wu, "Similarity-based Compression with Multidimensional Pattern Matching", Proceedings of the ACM Workshop on Systems and Network Telemetry and Analytics, 2019, 19--24,

Astha Syal, Alina Lazar, Jinoh Kim, Alex Sim, Kesheng Wu, "Automatic detection of network traffic anomalies and changes", Proceedings of the ACM Workshop on Systems and Network Telemetry and Analytics, 2019, 3--10,

Dipak Ghosal, Sambit Shukla, Alex Sim, Aditya V Thakur, Kesheng Wu, "A Reinforcement Learning Based Network Scheduler For Deadline-Driven Data Transfers", 2019 IEEE Global Communications Conference (GLOBECOM), 2019, 1--6,

Qiao Kang, Ankit Agrawal, Alok Choudhary, Alex Sim, Kesheng Wu, Rajkumar Kettimuthu, Peter H Beckman, Zhengchun Liu, Wei-keng Liao, "Spatiotemporal Real-Time Anomaly Detection for Supercomputing Systems", 2019 IEEE International Conference on Big Data (Big Data), 2019, 4381--4389,

Kade Gibson, Dongeun Lee, Jaesik Choi, Alex Sim, "Dynamic Online Performance Optimization in Streaming Data Compression", IEEE International Conference on Big Data (Big Data 2018), 2018, doi: 10.1109/bigdata.2018.8621867

I. Monga, C. Guok, J. MacAuley, A. Sim, H. Newman, J. Balcas, P. DeMar, L. Winkler, T. Lehman, X. Yang, "SDN for End-to-end Networked Science at the Exascale (SENSE)", Innovate the Network for Data-Intensive Science Workshop (INDIS 2018), in conjunction with the International Conference for High Performance Computing, Networking, Storage, and Analysis (SC'18), 2018, doi: 10.1109/INDIS.2018.00007

J. Kim, J. Choi, A. Sim, "Spatio-temporal Analysis of HPC I/O and Connection Data", International Workshop on Scalable Network Traffic Analytics (SNTA 2018), 2018, in conjunction with the 38th IEEE International Conference on Distributed Computing Systems (ICDCS 2018), 2018, doi: 10.1109/icdcs.2018.00176

Cecilia Dao, Xinyu Liu, Alex Sim, Craig Tull, Kesheng Wu, "Modeling data transfers: change point and anomaly detection", 2018 IEEE 38th International Conference on Distributed Computing Systems (ICDCS), 2018, 1589--1594,

Rajkumar Kettimuthu, Zhengchun Liu, Ian Foster, Peter H Beckman, Alex Sim, Kesheng Wu, Wei-keng Liao, Qiao Kang, Ankit Agrawal, Alok Choudhary, "Towards autonomic science infrastructure: architecture, limitations, and open issues", Proceedings of the 1st International Workshop on Autonomous Infrastructure for Science, 2018, 1--9,

Mengying Yang, Xinyu Liu, Wilko Kroeger, Alex Sim, Kesheng Wu, "Identifying anomalous file transfer events in LCLS workflow", Proceedings of the 1st International Workshop on Autonomous Infrastructure for Science, 2018, 1--4,

Sowmya Balasubramanian, Dipak Ghosal, Kamala Narayanan Balasubramanian Sharath, Eric Pouyoul, Alex Sim, Kesheng Wu, Brian Tierney, "Auto-tuned publisher in a pub/sub system: Design and performance evaluation", 2018 IEEE International Conference on Autonomic Computing (ICAC), 2018, 21--30,

Jonathan Wang, Kesheng Wu, Alex Sim, Seongwook Hwangbo, "Feature Engineering and Classification Models for Partial Discharge in Power Transformers", Mij, 2018, 1001:60,

Tal Shachaf, Alexander Sim, Kesheng Wu, Wilko Kroeger, "Detecting Anomalies in the LCLS Workflow", 2018 IEEE International Conference on Big Data (Big Data), 2018, 3256--3260,

Jinoh Kim, Alex Sim, "A New Approach to Online, Multivariate Network Traffic Analysis", 2nd Workshop on Network Security Analytics and Automation (NSAA), in conjunction with the 26th International Conference on Computer Communications and Networks (ICCCN 2017), 2017, doi: 10.1109/ICCCN.2017.8038520

J. Kim, A. Sim, S.C. Suh, I. Kim, "An Approach to Online Network Monitoring Using Clustered Patterns", International Conference on Computing, Networking and Communications (ICNC 2017), 2017, doi: 10.1109/ICCNC.2017.7876207

J. Kim, W. Yoo, A. Sim, S.C. Suh, I. Kim, "A Lightweight Network Anomaly Detection Technique", International Workshop on Computing, Networking and Communications (CNC 2017), 2017, doi: 10.1109/ICCNC.2017.7876251

Ling Jin, Doris Lee, Alex Sim, Sam Borgeson, Kesheng Wu, C Anna Spurlock, Annika Todd, "Comparison of clustering techniques for residential energy behavior using smart meter data", 2017,

Jonathan Wang, Wucherl Yoo, Alex Sim, Peter Nugent, Kesheng Wu, "Parallel variable selection for effective performance prediction", 2017 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGRID), 2017, 208--217,

Dongeun Lee, Alex Sim, Jaesik Choi, Kesheng Wu, "Improving statistical similarity based data reduction for non-stationary data", Proceedings of the 29th International Conference on Scientific and Statistical Database Management, 2017, 1--6,

Kesheng Wu, Dongeun Lee, Alex Sim, Jaesik Choi, "Statistical data reduction for streaming data", 2017 New York Scientific Data Summit (NYSDS), 2017, 1--6,

Jonathan Wang, Kesheng Wu, Alex Sim, Seongwook Hwangbo, "Convolutional Filtering for Accurate Signal Timing from Noisy Streaming Data", 2017 IEEE 15th Intl Conf on Dependable, Autonomic and Secure Computing, 15th Intl Conf on Pervasive Intelligence and Computing, 3rd Intl Conf on Big Data Intelligence and Computing and Cyber Science and Technology Congress (DASC/PiCom/DataCom/CyberSciTech, 2017, 941--948,

Alina Lazar, Ling Jin, C Anna Spurlock, Kesheng Wu, Alex Sim, "Data quality challenges with missing values and mixed types in joint sequence analysis", 2017 IEEE International Conference on Big Data (Big Data), 2017, 2620--2627,

Dongeun Lee, Alex Sim, Jaesik Choi, Kesheng Wu, "Novel data reduction based on statistical similarity", Proceedings of the 28th International Conference on Scientific and Statistical Database Management, 2016, 1--12,

Wucherl Yoo, Alex Sim, Kesheng Wu, "Machine learning based job status prediction in scientific clusters", 2016 SAI Computing Conference (SAI), 2016, 44--53,

David Pugmire, James Kress, Jong Choi, Scott Klasky, Tahsin Kurc, Randy Michael Churchill, Matthew Wolf, Greg Eisenhower, Hank Childs, Kesheng Wu, others, "Visualization and analysis for near-real-time decision making in distributed workflows", 2016 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW), 2016, 1007--1013,

D. Pugmire, J. Kress, J. Choi, S. Klasky, Kurc, R. M. Churchill, M. Wolf, G., H. Childs, K. Wu, A. Sim, J. Gu, J. Low, "Visualization and Analysis for Near-Real-Time Decision in Distributed Workflows", 2016 IEEE International Parallel and Distributed Symposium Workshops (IPDPSW), 2016, 1007--1013, doi: 10.1109/IPDPSW.2016.175

S. Shannigrahi, A. J. Barczyk, C. Papadopoulos, A. Sim, I. Monga, H. Newman, K. Wu, E. Yeh, "Named Data Networking in Climate Research and HEP Applications", 21st International Conference on Computing in High Energy and Nuclear Physics (CHEP2015), 2015,

W. Yoo, A. Sim, "Network Bandwidth Utilization Forecast Model on High Bandwidth Networks", IEEE International Conference on Computing, Networking and Communications (ICNC’15), 2015, doi: 10.1109/ICCNC.2015.7069393

Wucherl Yoo, Michelle Koo, Yi Cao, Alex Sim, Peter Nugent, Kesheng Wu, "Patha: Performance analysis tool for hpc applications", 2015 IEEE 34th International Performance Computing and Communications Conference (IPCCC), 2015, 1--8,

Taehoon Kim, Dongeun Lee, Jaesik Choi, Anna Spurlock, Alex Sim, Annika Todd, Kesheng Wu, "Extracting baseline electricity usage using gradient tree boosting", 2015 IEEE International Conference on Smart City/SocialCom/SustainCom (SmartCity), 2015, 734--741,

Taehoon Kim, Dongeun Lee, Jaesik Choi, C. Anna Spurlock, Alex Sim, Annika Todd, Kesheng Wu, "Extracting Baseline Electricity Usage with Gradient Boosting", International Conference on Big Intelligence and Computing (DataCom 2015), 2015, doi: 10.1109/SmartCity.2015.156

W. Yoo, A. Sim, "Efficient Changing Pattern Detection on High Bandwidth Network Measurements", 7th International Conference on Grid and Distributed Computing, 2014,

A. L. Chervenak, A. Sim, J. Gu, R. Schuler, N. Hirpathak, "Adaptation and Policy-Based Resource Allocation for Efficient Bulk Data Transfers in High Performance Computing Environments", 4th International Workshop on Network-aware Data Management (NDM'14), 2014,

A. L. Chervenak, A. Sim, J. Gu, R. Schuler, N. Hirpathak, "Efficient Data Staging Using Performance-Based Adaptation and Policy-Based Resource Allocation", 22nd Euromicro International Conference on Parallel, Distributed and Network-based Processing, 2014,

Lingfei Wu, Kesheng Wu, Alex Sim, Michael Churchill, Jong Y Choi, Andreas Stathopoulos, CS Chang, Scott Klasky, "High-performance outlier detection algorithm for finding blob-filaments in plasma", Proc. of 5rd International Workshop on Big Data Analytics: Challenges and Opportunites (BDAC-14), held in conjunction with ACM/IEEE SC14, 2014,

L. Wu, K. Wu, A. Sim, M. Churchill, J. Y. Choi, A. Stathopoulos, CS Chang, S. Klasky, "High-Performance Outlier Detection Algorithm for Blob-Filaments in Plasma", 5th International Workshop on Big Data Analytics: and Opportunities (BDAC 14), 2014,

K. Hu, A. Sim, D. Antoniades, C. Dovrolis, "Estimating and Forecasting Network Traffic Performance based on Statistical Patterns Observed in SNMP data", the 9th International Conference on Machine Learning and Data Mining (MLDM2013), 2013,

Jong Y Choi, Kesheng Wu, Jacky C Wu, Alex Sim, Qing G Liu, Matthew Wolf, C Chang, Scott Klasky, "Icee: Wide-area in transit data processing framework for near real-time scientific applications", 4th SC Workshop on Petascale (Big) Data Analytics: Challenges and Opportunities in conjunction with SC13, 2013, 11,

Junmin Gu, David Smith, Ann L. Chervenak, Alex Sim, "Adaptive Data Transfers that Utilize Policies for Resource Sharing", The 2nd International Workshop on Network-Aware Data Management Workshop (NDM2012), 2012,

Mehmet Balman, Eric Pouyoul, Yushu Yao, E. Wes Bethel, Burlen Loring, Prabhat, John Shalf, Alex Sim, and Brian L. Tierney, "Experiences with 100G Network Applications", In Proceedings of the Fifth international Workshop on Data-intensive Distributed Computing, in conjunction with ACM High Performance Distributing Computing (HPDC) Conference, 2012, Delft, Netherlands, June 2012, LBNL 5603E, doi: 10.1145/2286996.2287004

• Download File: didc-report.pdf (pdf: 11 MB)

Benson Ma, Arie Shoshani, Alex Sim, Kesheng, Yong-Ik Byun, Jaegyoon Hahm, Min-Su Shin, "Efficient Attribute-Based Data Access in Astronomy", The 2nd International Workshop on Network-Aware Data Workshop (NDM2012), 2012, 562--571,

A. Shoshani, I. Altintas, J. Chen, G. Chin, A. Choudhary, D. Crawl, T. Critchlow, K. Gao, B. Grimm, H. Iyer, C. Kamath, A. Khan, S. Klasky, S. Koehler, S. Lang, R. Latham, J. W. Li, W. Liao, J. Ligon, Q. Liu, B. Ludaescher, P. Mouallem, M. Nagappan, N. Podhorszki, R. Ross, D. Rotem, N. Samatova, C. Silva, A. Sim, R. Tchoua, R. Thakur, M. Vouk, K. Wu, W. Yu, "The Scientific Data Management Center: Available Technologies and Highlights", SciDAC Conference, 2011,

Junmin Gu, Dimitrios Katramatos, Xin Liu, Vijaya Natarajan, Arie Shoshani, Alex Sim, Dantong Yu, Scott Bradley, Shawn McKee, "StorNet: Co-Scheduling of End-to-End Bandwidth Reservation on Storage and Network Systems for High Performance Data Transfers", IEEE INFOCOM HSN 2011, 2011,

Dean N. Williams, Ian T. Foster, Don E. Middleton, Rachana Ananthakrishnan, Neill Miller, Mehmet Balman, Junmin Gu, Vijaya Natarajan, Arie Shoshani, Alex Sim, Gavin Bell, Robert Drach, Michael Ganzberger, Jim Ahrens, Phil Jones, Daniel Crichton, Luca Cinquini, David Brown, Danielle Harper, Nathan Hook, Eric Nienhouse, Gary Strand, Hannah Wilcox, Nathan Wilhelmi, Stephan Zednik, Steve Hankin, Roland Schweitzer, John Harney, Ross Miller, Galen Shipman, Feiyi Wang, Peter Fox, Patrick West, Stephan Zednik, Ann Chervenak, Craig Ward, "Earth System Grid Center for Enabling Technologies (ESG-CET): A Data Infrastructure for Data-Intensive Climate Research", SciDAC Conference, 2011,

Alex Sim, Mehmet Balman, Dean N. Williams, Arie Shoshani, Vijaya Natarajan, "Adaptive Transfer Adjustment in Efficient Bulk Data Transfer Management for Climate Datasets", The 22nd IASTED International Conference on Parallel and Distributed Computing and System, Marina Del Rey, CA, November 20, 2010, LBNL 3985E,

• Download File: PDCS2010-balman.pdf (pdf: 1.6 MB)

Mehmet Balman, Evangelos Chaniotakis, Arie Shoshani, Alex Sim, "A Flexible Reservation Algorithm for Advance Network Provisioning", ACM/IEEE International Conference for High Performance Computing, Networking, Storage and Analysis, New Orleans, LA, November 2010 (SC'10)., New Orleans, LA, IEEE Computer Society Washington, DC, USA ISBN: 978-1-4244-7559-, November 14, 2010, LBNL 4017E, doi: http://dx.doi.org/10.1109/SC.2010.4

• Download File: rpt79306.PDF (PDF: 2.8 MB)

G. Attebury, A. Baranovski, K. Bloom, B. Bockelman, D. Kcira, J. Letts, T. Levshina, C. Lundestedt, T. Martin, W. Maier, H. Pi, A. Rana, I. Sfiligoi, A. Sim, M. Thomas, F. Wuerthwein, "Roadmap for Applying Hadoop Distributed File System in Scientific Grid Computing", International Symposium on Grid Computing (ISGC), 2010,

Julian Cummings, Jay Lofstead, Karsten Schwan, Alexander Sim, Arie Shoshani, Ciprian Docan, Manish Parashar, Scott Klasky, Norbert Podhorszki, Roselyne Barreto, "EFFIS: An End-to-end Framework for Fusion Integrated Simulation", 18th Euromicro Conference on Parallel, Distributed and Network-based Processing, 2010,

Daren Hasenkamp, Alexander Sim, Michael Wehner, Kesheng Wu, "Finding tropical cyclones on a cloud computing cluster: Using parallel virtualization for large-scale climate simulation analysis", 2010 IEEE Second International Conference on Cloud Computing Technology and Science, 2010, 201--208, LBNL 4218E,

• Download File: LBNL-4218E.pdf (pdf: 559 KB)

Raj Kettimuthu, Alex Sim, Dan Gunter, Bill Allcock, Peer T. Bremer, John Bresnahan, Andrew Cherry, Lisa Childers, Eli Dart, Ian Foster, Kevin Harms, Jason Hick, Jason Lee, Michael Link, Jeff Long, Keith Miller, Vijaya Natarajan, Valerio Pascucci, Ken Raffenetti, David Ressman, Dean Williams, Loren Wilson, Linda Winkler, "Lessons learned from moving earth system grid data sets over a 20 Gbps wide-area network", HPDC 10, New York, NY, USA, ACM, 2010, 316--319, doi: 10.1145/1851476.1851519

G. Attebury, A. Baranovski, K. Bloom, B. Bockelman, D. Kcira, J. Letts, T. Levshina, C. Lundestedt, T. Martin, W. Maier, H. Pi, A. Rana, I. Sfiligoi, A. Sim, M. Thomas, F. Wuerthwein, "Hadoop Distributed File System for the Grid", IEEE Nuclear Science Symposium, 2009,

K Wu, S Ahern, EW Bethel, J Chen, H Childs, C Geddes, J Gu, H Hagen, B Hamann, J Lauret, others, "FastBit: Interactively Searching Massive Data", Proc. of SciDAC 2009, 2009, LBNL 2164E,

• Download File: LBNL-2164E.pdf (pdf: 3.2 MB)

D. N. Williams, R. Ananthakrishnan, D. E. Bernholdt, S. Bharathi, D. Brown, M. Chen, A. L. Chervenak, L. Cinquini, R. Drach, I. T. Foster, P. Fox, S. Hankin, V. E. Henson, P. Jones, D. E. Middleton, J. Schwidder, R. Schweitzer, R. Schuler, A Shoshani, F. Siebenlist, A. Sim, W. G. Strand, N. Wilhelmi, M. Su, "Data Management and Analysis for the Earth System Grid", SciDAC Conference, 2008,

W. Betts, L. Didenko, T. Freeman, P. Jakl, L. Hajdu, E. Hjort, K. Keahey, J. Lauret, D. Olson, A. Rose, I. Sakrejda, A. Sim, "STAR Grid Activities, OSG and Beyond", International Symposium on Grid Computing (ISGC), 2008,

Meiyappan Nagappan, Mladen A. Vouk, Kesheng Wu Alex Sim, Arie Shoshani, "Efficient Operational Profiling of Systems Using Arrays on Execution Logs", ISSRE, 2008, 313--314, doi: 10.1109/ISSRE.2008.45

L. Abadie, P. Badino, J. Baud, E. Corso, M. Crawford, S. De Witt, F. Donno, A. Forti, P. Fuhrmann,
G. Grosdidier, J. Gu , J. Jensen, S. Lemaitre, M. Litmaath, D. Litvinsev, G. Lo Presti, L. Magnoni, T. Mkrtchan, A. Moibenko, V. Natarajan, G. Oleynik, T. Perelmutov, D. Petravick, A. Shoshani, A. Sim, M. Sponza, R. Zappi, "Storage Resource Managers: Recent International Experience on Requirements and Multiple Co-Operating Implementations", the 24th IEEE Conference on Mass Storage Systems and Technologies, 2007,

D. E. Middleton, D. E. Bernholdt, D. Brown, M. Chen, A. L. Chervenak, L. Cinquini, R. Drach, P. Fox, P. Jones, C. Kesselman, I. T. Foster, V. Nefedova, A. Shoshani, A. Sim, W. G. Strand, D. Williams, "Enabling worldwide access to climate simulation data: the earth system grid (ESG)", SciDAV Conference, 2006,

P. Jakl, J. Lauret, A. Hanushevky, A. Shoshani, A. Sim, "From rootd to Xrootd, from physical to logical files: experience on accessing and managing distributed data", Computing in High Energy Physics (CHEP), 2006,

E. Hjort, L. Hajdu, J. Lauret, D. Olson, A. Sim, A. Shoshani, "Data and Computational Grid Coupling in RHIC/STAR – An Analysis Scenario using SRM Technology", Computing in High Energy Physics (CHEP), 2006,

A. Shoshani, A. Sim, K. Stockinger, "RRS: Replica Registration Service for Data Grids", International Workshop on Data Management in Grids, 2005,

Kesheng Wu, Junmin Gu, Jerome Lauret, Arthur Poskanzer, Arie Shoshani, Alexander Sim, Zhang, "Grid Collector: Facilitating Efficient Selective from Data Grids", International Supercomputer Conference 2005, 2005,

Eric Hjort, Doug Olson, Jerome Lauret, Arie Shoshani, Alex Sim, "Production mode Data- Replication framework in STAR using the HRM Grid middleware", Computing in High Energy Physics, 2004,

Alex Sim, Junmin Gu, Arie Shoshani, Vijaya Natarajan, "DataMover: Robust Terabytes-Scale Multi-file Replication over Wide-Area Networks", the 16th International Conference on Scientific and Statistical Database Management (SSDBM 2004), 2004,

A. Sim, J. Gu, A. Shoshani, E. Hjort, D. Olson, "Experience with Deploying Storage Resource Managers to Achieve Robust File Replication", Computing in High Energy Physics, 2003,

D. Yu, J. Lauret, A. Shoshani, D. Oldon, E. Hjort, A. Sim, "The Design of High Performance Data Replication in the Grid Environment for the STAR Collaboration", Computing in High Energy Physics, 2003,

L. Pouchard, L. Cinquini, B. Drach, D. Middleton, D. Bernholdt, K. Chanchio, I. Foster, V. Nefedova, D. Brown, P. Fox, J. Garcia, G. Strand, D. Williams, A. Chervenak, C. Kesselman, A. Shoshani, A. Sim, "An Ontology for Scientific Information in a Grid Environment: the Earth System Grid", the Symposium on Cluster Computing and the Grid (CCGrid), 2003,

Kesheng Wu, Wei-Ming Zhang, Alexander Sim, Gu, Arie Shoshani, "Grid Collector: An Event Catalog With Automated File", Proceedings of IEEE Nuclear Science Symposium 2003, 2003, doi: 10.1109/NSSMIC.2003.1351830

A. Shoshani, A. Sim, J. Gu, "Storage Resource Managers: Middleware components for Grid Storage", the 19th IEEE Symposium on Mass Storage Systems, 2002,

B. Allcock, I. Foster, V. Nefedova, A. Chervenak, E. Deelman, C. Kesselman, J. Lee, A. Sim, A. Shoshani, B. Drach, D. Williams, "High-Performance Remote Access to Climate Simulation Data: A Challenge Problem for Data Grid Technologies", Super Computing 2001, 2001,

E. Hjort, D. Olson, A. Sim, J. Yang, J. Lauret, M. Messer, "Data Grid Services in STAR, Initial Deployment: Site-to-Site File Replication", Computing in High Energy Physics, 2001,

D. Olson, E. Hjort, J. Lauret, M. Messer, A. Shoshani, A. Sim, "Non-shared Disk Cluster - A Fault Tolerant, Commodity Approach to Hi-Bandwidth Data Analysis", Computing in High Energy Physics, 2001,

L. Bernardo, H. Nordberg, D. Olson, A. Sim, A. Vaniachine, D. Zimmerman, B. Gibbard, R. Porter, T. Wenaus, D., "New capabilities in the HENP Grand Challenge Storage System and its application at RHIC", Computer Physics Communications, 2001, 140:179--188,

A. Shoshani, A. Sim, L.M. Bernerdo, H. Nordberg, "Coordinating Simultaneous Caching of File Bundles from Tertiary Storage", International Conference on Scientific and Statistical Database Management (SSDBM), 2000,

L. M. Bernardo, B. Gibbard, D. Malon, H. Nordberg, D. Olson, R. Porter, A. Shoshani, A. Sim, A. Vaniachine, T. Wenaus, K. Wu, D. Zimmerman, "New Capabilities in the HENP Grand Challenge Storage Access System and its Application at RHIC", Computing in High Energy Physics, 2000,

L. M. Bernardo, A. Shoshani, A. Sim, H. Nordberg, "Access Coordination Of Tertiary Storage For High Energy Physics Applications", the 17th IEEE Symposium on Mass Storage Systems, 2000,

A. Sim, H. Nordberg, L. M. Bernardo, A. Shoshani, D. Rotem, "Storage Access Coordination Using CORBA", Distributed Objects and Application, 1999, 168-175,

A. Shoshani, L.M. Bernardo, H. Nordberg, D. Rotem and A. Sim, "Multidimensional Indexing and Query Coordination for Tertiary Storage Management", International Conference on Scientific and Statistical Database Management, 1999, 214-225,

A. Shoshani, L.M. Bernardo, H. Nordberg, D. Rotem, A. Sim, "Storage Management for High Energy Physics Applications", Computing in High Energy Physics, 1998,

A. Sim, B. Parvin, P. Keagy, "Invariant Representation and Hierarchical Network for Inspection of Nuts from X-ray Images", IEEE International Conference on Neural Networks, 1995, II:738-743,