Results 21 to 30 of about 239,255 (120)
On the use of non-concurrent controls in platform trials: A scoping review [PDF]
Trials 2023, 2022 Platform trials gained popularity during the last few years as they increase flexibility compared to multi-arm trials by allowing new experimental arms entering when the trial already started. Using a shared control group in platform trials increases the trial efficiency compared to separate trials.
arxiv +1 more source
Enhancing Scalability in On‐Demand Video Streaming Services for P2P Systems
Advances in Multimedia, Volume 2012, Issue 1, 2012., 2012 Recently, many video applications like video telephony, video conferencing, Video‐on‐Demand (VoD), and so forth have produced heterogeneous consumers in the Internet. In such a scenario, media servers play vital role when a large number of concurrent requests are sent by heterogeneous users.
R. Arockia Xavier Annie +3 more
wiley +1 more source
Shirakami: A Hybrid Concurrency Control Protocol for Tsurugi Relational Database System [PDF]
arXiv, 2023 Modern real-world transactional workloads such as bills of materials or telecommunication billing need to process both short transactions and long transactions. Recent concurrency control protocols do not cope with such workloads since they assume only classical workloads (i.e., YCSB and TPC-C) that have relatively short transactions.
arxiv
Practically and Theoretically Efficient Garbage Collection for Multiversioning [PDF]
arXiv, 2022 Multiversioning is widely used in databases, transactional memory, and concurrent data structures. It can be used to support read-only transactions that appear atomic in the presence of concurrent update operations. Any system that maintains multiple versions of each object needs a way of efficiently reclaiming them.
arxiv
Serializable HTAP with Abort-/Wait-free Snapshot Read [PDF]
arXiv, 2022 Concurrency Control (CC) ensuring consistency of updated data is an essential element of OLTP systems. Recently, hybrid transactional/analytical processing (HTAP) systems developed for executing OLTP and OLAP have attracted much attention. The OLAP side CC domain has been isolated from OLTP's CC and in many cases has been achieved by snapshot isolation
arxiv
Complementarity in the Multiverse [PDF]
Phys.Rev.D79:123524,2009, 2009 In the multiverse, as in AdS, light-cones relate bulk points to boundary scales. This holographic UV-IR connection defines a preferred global time cut-off that regulates the divergences of eternal inflation. An entirely different cut-off, the causal patch, arises in the holographic description of black holes.
arxiv +1 more source
A loop quantum multiverse? [PDF]
AIP Conf. Proc. 1514 (2013) 21-30, 2012 Inhomogeneous space-times in loop quantum cosmology have come under better control with recent advances in effective methods. Even highly inhomogeneous situations, for which multiverse scenarios provide extreme examples, can now be considered at least qualitatively.
arxiv +1 more source
Lockless Blockchain Sharding with Multiversion Control [PDF]
arXiv, 2023 Sharding is used to address the performance and scalability issues of the blockchain protocols, which divides the overall transaction processing costs among multiple clusters of nodes. Shards require less storage capacity and communication and computation cost per node than the existing whole blockchain networks, and they operate in parallel to ...
arxiv
Approximation and Progressive Display of Multiverse Analyses [PDF]
arXiv, 2023 A multiverse analysis evaluates all combinations of "reasonable" analytic decisions to promote robustness and transparency, but can lead to a combinatorial explosion of analyses to compute. Long delays before assessing results prevent users from diagnosing errors and iterating early.
arxiv
Post-selection Inference in Multiverse Analysis (PIMA): an inferential framework based on the sign flipping score test [PDF]
arXiv, 2022 When analyzing data researchers make some decisions that are either arbitrary, based on subjective beliefs about the data generating process, or for which equally justifiable alternative choices could have been made. This wide range of data-analytic choices can be abused, and has been one of the underlying causes of the replication crisis in several ...
arxiv