THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

What will 5G be? What it will not be is an incremental advance on 4G. The previous four generations of cellular technology have each been a major paradigm shift that has broken backward compatibility. Indeed, 5G will need to be a paradigm shift that includes very high carrier frequencies with massive bandwidths, extreme base station and device densities, and unprecedented numbers of antennas. However, unlike the previous four generations, it will also be highly integrative: tying any new 5G air interface and spectrum together with LTE and WiFi to provide universal high-rate coverage and a seamless user experience. To support this, the core network will also have to reach unprecedented levels of flexibility and intelligence, spectrum regulation will need to be rethought and improved, and energy and cost efficiencies will become even more critical considerations. This paper discusses all of these topics, identifying key challenges for future research and preliminary 5G standardization activities, while providing a comprehensive overview of the current literature, and in particular of the papers appearing in this special issue.

What Will 5G Be

Recommender systems have developed in parallel with the web. They were initially based on demographic, content-based and collaborative filtering. Currently, these systems are incorporating social information. In the future, they will use implicit, local and personal information from the Internet of things. This article provides an overview of recommender systems as well as collaborative filtering methods and algorithms; it also explains their evolution, provides an original classification for these systems, identifies areas of future implementation and develops certain areas selected for past, present or future importance.

http://romisatriawahono.net/lecture/rm/survey/information%20retrieval/Bobadilla%20-%20Recommender%20Systems%20-%202013.pdf

Recommender systems survey

Cloud data centers host diverse applications, mixing workloads that require small predictable latency with others requiring large sustained throughput. In this environment, today's state-of-the-art TCP protocol falls short. We present measurements of a 6000 server production cluster and reveal impairments that lead to high application latencies, rooted in TCP's demands on the limited buffer space available in data center switches. For example, bandwidth hungry "background" flows build up queues at the switches, and thus impact the performance of latency sensitive "foreground" traffic.To address these problems, we propose DCTCP, a TCP-like protocol for data center networks. DCTCP leverages Explicit Congestion Notification (ECN) in the network to provide multi-bit feedback to the end hosts. We evaluate DCTCP at 1 and 10Gbps speeds using commodity, shallow buffered switches. We find DCTCP delivers the same or better throughput than TCP, while using 90% less buffer space. Unlike TCP, DCTCP also provides high burst tolerance and low latency for short flows. In handling workloads derived from operational measurements, we found DCTCP enables the applications to handle 10X the current background traffic, without impacting foreground traffic. Further, a 10X increase in foreground traffic does not cause any timeouts, thus largely eliminating incast problems.

/pdf/data-center-tcp-dctcp-4d3pj8xdal.pdf

Data center TCP (DCTCP)

This paper presents and evaluates two principles for wireless routing protocols. The first is datapath validation: data traffic quickly discovers and fixes routing inconsistencies. The second is adaptive beaconing: extending the Trickle algorithm to routing control traffic reduces route repair latency and sends fewer beacons.We evaluate datapath validation and adaptive beaconing in CTP Noe, a sensor network tree collection protocol. We use 12 different testbeds ranging in size from 20--310 nodes, comprising seven platforms, and six different link layers, on both interference-free and interference-prone channels. In all cases, CTP Noe delivers > 90% of packets. Many experiments achieve 99.9%. Compared to standard beaconing, CTP Noe sends 73% fewer beacons while reducing topology repair latency by 99.8%. Finally, when using low-power link layers, CTP Noe has duty cycles of 3% while supporting aggregate loads of 30 packets/minute.

/pdf/collection-tree-protocol-selhhlblmq.pdf

Collection tree protocol

Energy markets enable matching supply and demand through inter- and intra-region electricity trading. Due to the interconnected nature of the energy markets, the supply-demand constraints in one region can impact prices in another connected region. To incorporate these spatiotemporal relationships, we propose a novel graph neural network architecture incorporating multidimensional time-series features to forecast price (node attribute) and energy flow (edge attribute) between regions simultaneously. To the best of our knowledge, this paper is the first attempt to combine node and edge level forecasting in energy markets. We show that our proposed approach has a mean absolute prediction percentage error of 12.8%, which significantly beats the state-of-the-art baseline techniques.

A Graph-based Spatiotemporal Model for Energy Markets

Systems and methods for managed service delivery at the edge in 4G wireless networks for: dynamic QoS (Quality of Service) provisioning and prioritization of sessions based on the task (current, future) of the workflow instance; predicting the current and future network requirements based on the current and future tasks of all business process sessions and prepare session QoS accordingly; providing an audit trail of business process execution; and reporting on business process execution.

Managed service delivery in 4g wireless networks

: Performance analysis of large-scale protocol designs and network operations is accelerated by the novel, highly scalable and efficient parallel network simulators developed in this project. Also accomplished in this effort was: theoretical work on traffic modeling and BGP routing issues; and Quality of Service (QoS) as determined by stable assurances on loss rate, bandwidth and delay. The QoS problem addressed by this project had been previously unsolved for multi-domain P-based inter-networks primarily because of complex deployment and coordination issues.

Scalable Online Network Modeling and Simulation

Ein Verfahren, eine Vorrichtung und ein Herstellungsgegenstand, um das gleichzeitige Vorhandensein von mehreren Maschinen mit identischen Adressen in einem einzigen Netzwerk eines Rechenzentrums zu ermoglichen. Das Verfahren beinhaltet das Zuweisen einer eindeutigen Pseudokennung zu jeder Maschine in dem Netzwerk, welche zur Weiterleitung eines Pakets an eine Zielmaschine verwendet werden kann, das Ersetzen einer Medienzugriffssteuerungsadresse eines Senders in einer Anforderung eines Adressenauflosungsprotokolls durch eine Pseudokennung des Senders an einer Vermittlungsstelle am Rand eines Netzwerks, das Abrufen einer Kennung eines privaten Netzwerks aus einer Abgleichungstabelle auf der Grundlage der Pseudokennung des Senders und das Zurucksenden einer Pseudokennung fur die Zieladresse auf der Grundlage der Kennung des privaten Netzwerks und das Ersetzen der Pseudokennung der Zieladresse durch eine tatsachliche Kennung an einer Zielvermittlungsstelle am Rand eines Netzwerks, um das Paket an die Zielmaschine weiterzuleiten.

Ermöglichen des gleichzeitigen Vorhandenseins von Hostrechnern oder virtuellen Maschinen mit identischen Adressen

A method of operating a battery pack includes identifying a plurality of batteries in the battery pack, estimating a state of charge of each of the plurality of the batteries, obtaining a plurality of parameters of each of the plurality of the batteries, and determining, selectively, a charge current or a discharge current for each of the plurality of batteries using the state of charge and the plurality of parameters of each of the plurality of the batteries.

Shivkumar Kalyanaraman

Papers

A Graph-based Spatiotemporal Model for Energy Markets

Managed service delivery in 4g wireless networks

Scalable Online Network Modeling and Simulation

Ermöglichen des gleichzeitigen Vorhandenseins von Hostrechnern oder virtuellen Maschinen mit identischen Adressen

Intelligent composable multi-function battery pack