Approximate Nearest Neighbor Search, Fast Ranking, Semantic Similarity Search, Information Retrieval, Backdoor/Adversarial Attacks. Projects:Fast Approximate Nearest Neighbor Search (Fast Neural Ranking) with Learning to Hash• Develop an efficient ANN search platform for Fast Ranking/Retrieval• Develop a hashing model for flexible searching measures, metric or non-metric, even more complex.Energy-based hashing networks• Develop a generalizable EBM-based hashing network for approximate similarity search.Adversarial/Backdoor attacks• Develop generative-based backdoor attack models that are most stealthy on both input and latent space.

Generative Modeling, Computational Look-alike modelingComputational Look-alike modeling* Develop generative hashing-based model for fast look-alike retrieval.Generative modeling* Develop an efficient discriminator-free generative model based on Wassertein distance* Develop an efficient Wasserstein-based estimator in GAN

I am the technical lead of Verve's Foot Traffic Index (FTI) product. I've participated in both FTI's processing pipeline and experimental/statistical design. I have also been involved in some other products at Verve, including device-audience generation.Our environment includes Hadoop, AWS, Pig, Redshift.

Participate in activities involving Big Data research and Machine Learning in Big Data Environment. I'm involved in Automated Event Service (AES) and Data Environment For Rapid Exploration And Characterization Of Hydrometeorological Organized Systems (DERECHOS) research projects at NASA. I'm responsible for development of large scale data (statistical) analysis algorithms. I use various tools, including Hadoop, Spark, Cassandra, and SciDB.

I use Hadoop, HDFS, Pig, Cloudera, SciDB, Parquet, Python, and R in this project.I evaluate performance between Hadoop ecosystem and SciDB for various big analytically tasks using multidimensional array data. I develop big data algorithms for finding intersections of satellites in multidimensional array systems. I develop an array oriented systems for handling array data in Hadoop and HDFS. I also develop extensions in Pig for scientists to interact with array data.

I work with Spring Framework, Apache Solr, Datastax Enterprise, Cassandra (Hector Client), HBase, Hadoop, Pig, OpenID, Openauth.I develop the system architecture and integration of various components. I build the analytical platform and develop several analytical jobs. I deploy and manage Datastax Enterpise Cassandra System, with Solr and Hadoop. I developed several crawl tasks using Apache Nutch and HBase.

I work with JBoss, MS SQL Server, Java/Spring Integration, Maven, Agile/Scrum.I'm responsible for:• Participate in application development activities.• Integration of Open Source API’s into existing system architecture.• Existing system maintenance.

Aquilent focuses mostly as a federal-government solution provider in the Washington DC areas. It brings over 30 years of experience and practices in software solutions to various federal agency such as Department of Defense, Veteran Affair, Navy, NASA and so on. Here at Aquilent, I am acting as a junior developer.I work in multiple projects, including .NET and Java, at the Department of Veteran Affairs (VA), the Department of Labor (DOL), and the National Renewable Energy Laboratory.

I work as a SharePoint developer and administrator at VA. I work with SharePoint 2007/2010, .NET Framework 3.5/4.0, and MS SQL Server.My responsibilities are:- Involve in installation and configuration of the SharePoint Server 2007/2010.- Regularly interact with the Customer to gather requirements for new system features.- Responsible for SharePoint Administration tasks, including: + Create and configure web application, site collections, and site hierarchy, Lists/Libraries. + Customize site definitions and the team sites to give the VA look and feel. + Configure out-of-the-box web parts. - Responsible for Custom SharePoint Development, including: + Design and document custom solutions. + Create and deploy custom Web Parts for data collection, graphical reporting functionality, and SharePoint data queries. + Develop InfoPath based web-forms. + Develop custom Event Handlers, SharePoint Jobs, and Workflow Activities - Involve in performance tuning of existing critical Large SharePoint libraries.

Assisting in CMSC330 (Organization of Programming Languages), CMSC411 (Computer Architecture), CMSC250 (Discrete Mathematics), and CMSC430 (Introduction to Compilers).- Lead and teach weekly discussion sections- Hold regular office hours- Responsible for writing and grading quizzes, homework, and exams

NCFMS manage the general ledger database to keep track of all commitments and obligations in order to provide a real-time interface to the financial data of the current E-Procurement System. The development environment at DOL is: Microsoft SQL Server, Microsoft IIS, JRun Server, COTS CommerceOne’s Procurement System, and Java Web Service architecture. Be part of the development team. Responsible for designing the Invoice Reconciliation (IR) Module. Responsible for coding and testing the IR Module.

Enrollment System Redesign Project (ESR)/ Department of Veteran Affair (VA)ESR is the new implementation of the current standalone Enrollment System at VA. The effort is to establish a fully integrated environment which will replace not only the current Enrollment System, but also all the standalone systems at VA. The development environment at VA is: BEA Weblogic 8.1 and 10.0, Oracle 10g, J2EE, Spring, Hibernate, Struts, BizFlow BPM, ILog Rule Engine, Jasper Report.Responsibilities:Be part of development team & responsible for technical design, and coding in ESR 4.0.Be part of ESR 3.0 Development TeamResponsible for maintaining ESR version 3.0Responsible for maintaining & supporting ESR Live System.

I work with MyEclipse IDE, Tomcat 5.5, PostGreSql Server, JDK 1.5, JUnit, XDoclet, Struts, and Hibernate, Scrum Development Methodology.My responsibilities are:• Design and develop Tomra Data Interchange Package to interact with the vendor's system and our legacy application.• Design and develop the customizable database model• Perform analysis and adding AJAX enabled features into the company's custom Struts Framework.• Aiding in upgrading the company application's environment