We present a software system, CodeStats, to empirically validate the prevalence of syntactic patterns in real-world codebases. Our prototype implementation supports only Java codebases. A domain-speci c language for queries facilitates concise expression of syntactic patterns, while also mitigating misuse of the CodeStats computational infrastructure. For scalability, a distributed system execu...

Once a year, the NWO cluster Stochastics – Theoretical and Applied Research (STAR) organises a STAR Outreach Day, a one-day event around a theme that is of a broad interest to the stochastics community in the Netherlands. The last Outreach Day took place at Eurandom on 12 December 2014. The theme of the day was ‘Networks & Big Data’. The topic is very timely. The Vision document 2025 of the Pla...

BACKGROUND Despite earlier doubts, a string of recent successes indicates that if sample sizes are large enough, it is possible-both in theory and in practice-to identify and replicate genetic associations with common complex diseases. But human genome epidemiology is expensive and, from a strategic perspective, it is still unclear what 'large enough' really means. This question has critical im...

Industry analysts describe Big Data in terms of three V’s: volume, velocity, variety. The data is too big to process with current tools; it arrives too fast for optimal storage and indexing; and it is too heterogeneous to fit into a rigid schema. There is a huge pressure on database researchers to study, explain, and solve the technical challenges in big data, but we find no inspiration in the ...

Starting from the Janus solution and its gauge theory dual, we obtain the dual gauge theory description of the cosmological solution by the procedure of doubleWick rotation. The coupling is driven either to zero or to infinity at the big-bang and big-crunch singularities, which are shown to be related by the S-duality symmetry. In the dual Yang-Mills theory description, these are non singular a...

highly efficient vector, a nonimmune population, and mining conditions that encouraged both vector breeding and malaria transmission fueled recurrent epidemics of malaria, which apparently started in the 1940s or early 1950s; 80% of the cases were P. falciparum. In 1955, public health authorities in Pailin began distributing chloroquine to workers daily; later, the frequency was reduced to twic...

There is a fundamental discrepancy between the targeted and actual users of current analytics frameworks. Most systems are designed for the challenges of the Googles and Facebooks of the world— processing petabytes of data distributed across large cloud deployments consisting of thousands of cheap commodity machines. Yet, the vast majority of users analyze relatively small datasets of up to sev...

COVER A multirobot construction system inspired by mound-building termites. Independent climbing robots with onboard sensors automatically build user-specifi ed structures out of specialized brick-sized building material. The robots are limited to local sensing and coordinate their activity indirectly by manipulating their shared environment and reacting to what they encounter. See pages 742 an...

There has been a “Cambrian explosion” of big data systems proposed and evaluated in the last eight years, but relatively little understanding of how these systems or the ideas they represent compare and complement one another. In enterprise and science situations, “one size is unlikely to fit all”: we see analytics teams running multiple systems simultaneously. However, the highest level of abs...

The heterogeneity of hPRL in the serum of a patient with a giant prolactinoma (hPRL 27 micrograms/ml) was studied employing gel chromatography, RIA and lymphoma cell bioassay. After gel filtration of serum sample on Sephadex G-100 (superfine) column, a few hPRL peaks were detected by RIA. Rechromatography of the second peak, which eluted between the void volume and the small third peak, reveale...