Abstract: The preferred treatment for kidney failure is a transplant; however, demand for donor kidneys far outstrips supply.  Kidney exchange, an innovation where willing but incompatible patient-donor pairs can exchange organs---via barter cycles and altruist-initiated chains---provides a life-saving alternative.  Typically, fielded exchanges act myopically, considering only the current pool of pairs when planning the cycles and chains.  Yet kidney exchange... Read More

With the rise of large-scale, Web-based applications, users are increasingly adopting a new class of document-oriented database management systems (DBMSs) that allow for rapid prototyping while also achieving scalable performance. Like for other distributed storage systems, replication is an important consideration for document DBMSs in order to guarantee availability. Replication can be between failure-independent nodes in the same data center... Read More

Abstract: This talk addresses the problem in Web page ranking of effectively combining link and content information with efficiency high enough to be applicable to real-world search engines. Unlike previous surfer models, our approach is based on the viewpoint of a Web page author. Based on this viewpoint, we formulate the concept of contribution score, which indicates the amount to... Read More

Web applications (web mail, web stores, social networks, etc) keep massive amounts of data that must be readily available to users. The storage system underlying these applications has evolved dramatically over the past 25 years, from file systems, to SQL database systems, to a large variety of NOSQL systems. In this talk, we contemplate this fascinating history and present a... Read More

VoltDB is an in-memory, relational, SQL, fully ACID database well suited to supporting transactional applications against high speed event feeds. We’ll discuss: Why VoltDB exists and the Stonebraker H-Store history How VoltDB differs from its academic roots (and why) Unique VoltDB capabilities that enable streaming data pipelines Some engineering insights after 6 years of developing a distributed, consistent, high performance,... Read More

In this talk, Dr. Liu will briefly introduce the related research topics that are currently conducted at the Central Research Laboratories of NEC Corporation, such as big data processing. He will then focus on the introduction to a commercial level demo system for surveillance video search, named Wally, which will be exhibited at the ACM Multimedia 2014. Wally is a... Read More

Abstract: Improving student productivity in online learning depends on designing learning environments based on principles derived from learning science research into how people learn.  Students master a skill by solving the sequence of practice exercises related to the skill.  The initial development of a skills model on a course, defining skills and associate them with exercises, heavily relies on human... Read More

We all get excited about the next technical capability. In-memory - cool; scalable - even cooler; vector based execution, real-time code generation, etc etc. But do these really tackle the most important problems that will lead the next generation of databases? In this presentation Ori will present FoundationDB - a fault-tolerant, scalable and transactional K/V store, and the languages he... Read More

The location pro les of social media users are valuable for various applications, such as marketing and real-world anal- ysis. As most users do not disclose their home locations, the problem of inferring home locations has been well stud- ied in recent years. In fact, most existing methods perform batch inference using static (i.e., pre-stored) social media contents. However, social... Read More

On-line transaction processing (OLTP) is one of the two most important enterprise data management applications. Transaction processing workloads typically exhibit high concurrency and provide ample opportunities for parallel execution by multicore hardware. Unfortunately, due to the characteristics of the application, transaction processing systems must moderate and coordinate communication between independent agents. As a result, transaction processing systems cannot always convert... Read More