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1st Workshop on BlackboxNLP: Analyzing and Interpreting Neural Networks for NLP, co-located with the 2018 Conference on Empirical Methods in Natural Language Processing, EMNLP 2018

作者： Kerinec, Emma Søgaard, Anders Braud, Chloé École Normale Supérieure de Lyon Lyon France Dpt. of Computer Science University of Copenhagen Denmark Université de Lorraine CNRS LORIA Nancy France

ISBN: (纸本)9781948087711

This work aims to contribute to our understanding of when multi-task learning through parameter sharing in deep neural networks leads to improvements over single-task learning. We focus on the setting of learning from loosely related tasks, for which no theoretical guarantees exist. We therefore approach the question empirically, studying which properties of datasets and single-task learning characteristics correlate with improvements from multi-task learning. We are the first to study this in a text classification setting and across more than 500 different task pairs. © 2018 Association for Computational Linguistics

关键词： Deep neural networks

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Creating an Electronic Magazine in WordPress for Promoting the Practical Training of Students

Creating an Electronic Magazine in WordPress for Promoting t...

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International Conference on Information Technologies (InfoTech)

作者： Dimitrios Liarokapis Vasilios Papigiotis Eleftherios Stergiou Christos Gogos Computer Engineering Dpt. TEI of Epirus Arta Greece

The report presents ideas and experiences in creating an electronic magazine for exposing knowledge and skills acquired during the practical training of students. We present the rational on relying on a Content Management System such as WordPress to set up a dynamic site where students can create articles with topics related to their practical training that would appear in public after a review process that would include their work and college supervisors. The benefits of such an endeavor could be multifold; students will be improving their writing and reporting skills, instructors will be gaining insights on the activities students are facing when entering the marketplace and employers will be gaining visibility in college settings that could help them attract prospective employees or establish synergies with the technological institutions.

关键词： Training Consumer electronics Content management Writing Guidelines Employment Prototypes

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Non-Parametric Bootstrap Detection of Availability Service Level Objective Violations in Cloud Storage

Non-Parametric Bootstrap Detection of Availability Service L...

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Network Traffic Measurement and Analysis Conference (TMA)

作者： Maurizio Naldi Dpt. of Civil Engineering and Computer Science University of Rome Tor Vergata Rome Italy

Service quality commitments in cloud service provisioning are typically described in Service Level Agreements (SLA). Service availability is always a major parameter to be included in such SLAs. and the cloud provider is bounded to guarantee a minimum availability value, for which current cloud monitoring systems employ a naive estimator. In this paper a new estimation method is proposed for service availability, which is based on the bootstrap technique and employs a non-parametric statistical hypothesis test. Through Monte Carlo simulation, the method is shown to be much more accurate than the naive one under three stochastic models for the durations of operating and outage periods, exhibiting a Type I error probability lower than 1 % in most cases, while the naive estimator yields error probabilities around 40%.

关键词： Cloud computing Mathematical model Computational modeling Error probability Monitoring Estimation Monte Carlo methods

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Estimating the Jones polynomial for Ising anyons on noisy quantum computers

arXiv

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arXiv 2022年

作者： Self, Chris N. Iblisdir, Sofyan Brennen, Gavin K. Meichanetzidis, Konstantinos QOLS Blackett Laboratory Imperial College London SW7 2AZ United Kingdom Quantinuum Partnership House Carlisle Place LondonSW1P 1BX United Kingdom Dpto. Análisis Matemático y Matemática Aplicada Facultad de Matemáticas Universidad Complutense Madrid28040 Spain Dpt. Astrofísica i Física Quàntica Institut de Ciències del Cosmos Facultat de Física Universitat de Barcelona Barcelona08028 Spain Center for Engineered Quantum Systems Department of Physics & Astronomy Macquarie University NSW2109 Australia Department of Computer Science University of Oxford United Kingdom Quantinuum 17 Beaumont St. OxfordOX1 2NA United Kingdom

The evaluation of the Jones polynomial at roots of unity is a paradigmatic problem for quantum computers. In this work we present experimental results obtained from existing noisy quantum computers for special cases of this problem, where it is classically tractable. Our approach relies on the reduction of the problem of evaluating the Jones polynomial of a knot at lattice roots of unity to the problem of computing quantum amplitudes of qudit stabiliser circuits, which are classically efficiently simulatable. More specifically, we focus on evaluation at the fourth root of unity, which is a lattice root of unity, where the problem reduces to evaluating amplitudes of qubit stabiliser circuits. To estimate the real and imaginary parts of the amplitudes up to additive error we use the Hadamard test. We further argue that this setup defines a standard benchmark for near-term noisy quantum processors. Furthermore, we study the benefit of performing quantum error mitigation with the method of zero noise extrapolation. Copyright © 2022, The Authors. All rights reserved.

关键词： Polynomials

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A Practical Performance Comparison of ECC and RSA for Resource-Constrained IoT Devices

A Practical Performance Comparison of ECC and RSA for Resour...

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Global Internet of Things Summit (GIoTS)

作者： Manuel Suárez-Albela Tiago M. Fernández-Caramés Paula Fraga-Lamas Luis Castedo Dpt. Computer Engineering Universidade da Coruña A Coruña Spain

One of the main concerns regarding Internet of Things (IoT) networks is the security of the communications between IoT nodes and the upper layers of the architecture. Since the vast majority of IoT nodes are constrained in terms of power consumption and computational capabilities, the security of their communications is usually lightly addressed. Thus, new IoT hardware platforms are facing this lack of security by including hardware-accelerated cryptographic capabilities. This brings the opportunity to use advanced security mechanisms such as Transport Layer Security (TLS). In this paper, two of the most used TLS authentication algorithms (i.e., ECDSA and RSA) are compared using a resource-constrained IoT node based on the ESP32 SoC (System-on-Chip). The tests are driven by the concept of security level, allowing for a fair comparison in terms of the computational power required to break each cryptographic algorithm. Specifically, security levels from 80 to 192 were tested. A 512-byte JSON file was downloaded 100 consecutive times while measuring both energy consumption and the average time per transaction. The results show that, although ECDSA outperforms RSA in all the performed tests, real-world scenario testing is needed to determine which security configuration is the best for a hardware platform. Software optimizations and implementations could lead to scenarios where higher security level alternatives outperform simpler and theoretically lighter ones in terms of energy consumption and data throughput. Specifically, the obtained results show that the curve secp256r1 outperforms the curve secp224r1, while providing a higher security level, due to optimizations made on the libraries implementing the ECC operations.

关键词： Internet of Things Ciphers Protocols Hardware Performance evaluation

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A flexible leakage trace collection setup for arbitrary cryptographic IP cores

A flexible leakage trace collection setup for arbitrary cryp...

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IEEE International Workshop on Hardware-Oriented Security and Trust (HOST)

作者： Athanassios Moschos Apostolos P. Fournaris Odysseas Koufopavlou Electrical and Computer Engineering Dpt. University of Patras Rion Campus Greece

Leakage Assessment and Side Channel Attacks (SCA) leakage trace acquisition tools and platforms require a considerable amount of time to collect millions of traces and rely on custom, hard to change or handle acquisition control mechanisms. To match these problems, in this paper, a flexible and scalable architecture for leakage trace collection is proposed, providing a fast, reconfigurable and flexible control mechanism that can be easily scaled to a wide variety of Devices Under Test (DUT). The proposed system migrates test vector generation, control and transmission, from off-board Personal computer (PC) to an on-board embedded-system hardware control mechanism. The proposed solution provides a toolset that can be used to structure various leakage assessment scenarios, regardless of the DUT's implemented cryptographic algorithm. The proposed approach enables single, multiple encryption per control loop round and DUT clock frequency adjustment to achieve accurate and fast leakage trace collection even for low-mid range oscilloscopes.

关键词： Cryptography Field programmable gate arrays Hardware computer architecture Software Clocks Process control

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PROBABILISTIC MATRIX COMPLETION FOR IMAGE PHASE RETRIEVAL

PROBABILISTIC MATRIX COMPLETION FOR IMAGE PHASE RETRIEVAL

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IEEE International Conference on Image Processing

作者： Petros Nyfantis Pablo Ruiz Aggelos K. Katsaggelos Department of Physics National and Kapodistrian University of Athens Dpt. of Electrical Engineering and Computer Science Northwestern University

In this paper we address the Phase Retrieval problem, which aims to recover the phase of the Fourier transform of a signal when only magnitude measurements are available. Following recent developments in Phase Retrieval, the problem can be transformed into a convex semidefinite programming optimization problem, which can be solved using Matrix Completion techniques. In this paper the acquisition process is modeled using a likelihood function, which splits the original problem into two convex optimization problems, and alternates between the solution of each of them. To relate both convex problems we introduce a heuristic, which results in fast convergence of the proposed method.

关键词： Extraterrestrial measurements Optimization Convergence Minimization Heuristic algorithms Discrete Fourier transforms

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Using hyperlinks to improve multilingual partial parsers 15

Using hyperlinks to improve multilingual partial parsers

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15th International Conference on Parsing Technologies, IWPT 2017

作者： Søgaard, Anders Dpt. of Computer Science University of Copenhagen Denmark

ISBN: (纸本)9781945626739

Syntactic annotation is costly and not available for the vast majority of the world's languages. We show that sometimes we can do away with less labeled data by exploiting more readily available forms of mark-up. Specifically, we revisit an idea from Valentin Spitkovsky's work (2010), namely that hyperlinks typically bracket syntactic constituents or chunks. We strengthen his results by showing that not only can hyperlinks help in low resource scenarios, exemplified here by Quechua, but learning from hyperlinks can also improve state-of-the-art NLP models for English newswire. We also present out-of-domain evaluation on English Ontonotes 4.0. © 2017 Association for Computational Linguistics

关键词： Syntactics

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Analysis of Crystallization Processes on the Surface of Ge-Ga-Se Glasses for Electronics and IR Photonics

Analysis of Crystallization Processes on the Surface of Ge-G...

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IEEE International Conference on Electronics and Nanotechnology (ELNANO)

作者： Halyna Klym Ivan Karbovnyk Yuriy Kostiv Ivanna Vasylchyshyn Specialized Computer System Dpt. Lviv Polytechnic National University Lviv Ukraine Electronics and Computer Technologies Dpt. Ivan Franko National University of Lviv Lviv Ukraine Information Technology Security Dpt. Lviv Polytechnic National University Lviv Ukraine Theoretically and General Electrical Engineering Dpt. Lviv Polytechnic National University Lviv Ukraine

ISBN: (纸本)9781538663844

Surface crystallization processes in the 80GeSe 2 -20Ga 2 Se 3 chalcogenide glasses annealed at 380 °C for 25 h and 80 h were studied using atomic force microscopy method. It is shown that crystallites of GeSe 2 phase are formed in the crystallized glasses on the surface. Optimal conditions of crystallization process were selected for preparation of glasses for IR photonics and sensor electronics.

关键词： Glass Annealing Surface morphology Crystallization Surface treatment Chalcogenides Histograms

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Complexity Reduction in the Negotiation of New Lexical Conventions 40

Complexity Reduction in the Negotiation of New Lexical Conve...

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40th Annual Meeting of the Cognitive science Society: Changing Minds, CogSci 2018

作者： Schueller, William Loreto, Vittorio Oudeyer, Pierre-Yves University of Bordeaux Bordeaux France INRIA Bordeaux Sud-Ouest Ensta ParisTech: Flowers Project-Team Bordeaux France SONY Computer Science Lab Paris France Physics Dpt. Sapienza University of Rome Rome Italy Vienna Austria

ISBN: (纸本)9780991196784

In the process of collectively inventing new words for new concepts in a population, conflicts can quickly become numerous, in the form of synonymy and homonymy. Remembering all of them could cost too much memory, and remembering too few may slow down the overall process. Is there an efficient behavior that could help balance the two? The Naming Game is a multi-agent computational model for the emergence of language, focusing on the negotiation of new lexical conventions, where a common lexicon self-organizes but going through a phase of high complexity. Previous work has been done on the control of complexity growth in this particular model, by allowing agents to actively choose what they talk about. However, those strategies were relying on ad hoc heuristics highly dependent on fine-tuning of parameters. We define here a new principled measure and a new strategy, based on the beliefs of each agent on the global state of the population. The measure does not rely on heavy computation, and is cognitively plausible. The new strategy yields an efficient control of complexity growth, along with a faster agreement process. Also, we show that short-term memory is enough to build relevant beliefs about the global lexicon. © 2018 Proceedings of the 40th Annual Meeting of the Cognitive science Society, CogSci 2018. All rights reserved.

关键词： active learning control of complexity growth language emergence multi-agent model

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