Sökning: "first best solution"

Visar resultat 6 - 10 av 128 avhandlingar innehållade orden first best solution.

  1. 6. Scalable Optimization Methods for Machine Learning : Acceleration, Adaptivity and Structured Non-Convexity

    Författare :Vien Van Mai; Mikael Johansson; John Duchi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Large-scale optimization; Anderson acceleration; first-order methods; stochastic optimization; momentum; gradient clipping; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : This thesis aims at developing efficient optimization algorithms for solving large-scale machine learning problems. To cope with the increasing scale and complexity of such models, we focus on first-order and stochastic methods in which updates are carried out using only (noisy) information about function values and (sub)gradients. LÄS MER

  3. 7. Model reduction for diffusion systems

    Författare :Bharath Bhikkaji; Torsten Söderström; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal Processing; Signalbehandling;

    Sammanfattning : Diffusion phenomena has been studied with a lot of interest, for a long time, due to its historical and practical significance. In the recent days it has thrown a lot of interest among control engineers, as more and more practical systems, varying from stock markets to environmental pollution, have been observed to involve diffusion. LÄS MER

  4. 8. Exploring Processor and Memory Architectures for Multimedia

    Författare :Ali Iranpour; Institutionen för datavetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Multimedia; Computer Architecture; Mobile; Embedded Systems; constraint programming; Memory; Processing; optimal memory mapping;

    Sammanfattning : Multimedia has become one of the cornerstones of our 21st century society and, when combined with mobility, has enabled a tremendous evolution of our society. However, joining these two concepts introduces many technical challenges. LÄS MER

  5. 9. On the Role of Performance Interference in Consolidated Environments

    Författare :Navaneeth Rameshan; Vladimir Vlassov; Manish Parashar; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Performance; Interference; Virtualization; Elastic Scaling; Utilization; Datalogi; Computer Science;

    Sammanfattning : With the advent of resource shared environments such as the Cloud, virtualization has become the de facto standard for server consolidation. While consolidation improves utilization, it causes performance-interference between Virtual Machines (VMs) from contention in shared resources such as CPU, Last Level Cache (LLC) and memory bandwidth. LÄS MER

  7. 10. Integrated Frequency Synthesis for Convergent Wireless Solutions

    Författare :Jad G. Atallah; Mohammed Ismail Elnaggar; Erik Bruun; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wireless; transceiver; Bluetooth; DECT; GSM; 3G; LTE; WLAN; WiMAX; multi-standard; vertical handover; Sniffer; frequency synthesizer; phase-locked loop; PLL; sigma-delta; calibration; Electronics; Elektronik;

    Sammanfattning : Wireless transceivers combining several standards in one unit are of key importance. In order to reach the ultimate goal of maximizing the performance-to-cost ratio of such modules, a careful study of the target application, the architecture, and the frequency planning is strongly required. LÄS MER