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  1. Article

    Open Access

    Automatic generation of ARM NEON micro-kernels for matrix multiplication

    General matrix multiplication (gemm) is a fundamental kernel in scientific computing and current frameworks for deep learning. Modern realisations of gemm are mostly written in C, on top of a small, highly tuned

    Guillermo Alaejos, Héctor Martínez, Adrián Castelló in The Journal of Supercomputing (2024)

  2. Article

    Open Access

    Parallel GEMM-based convolution for deep learning on multicore RISC-V processors

    We address the efficient implementation of the convolution operator on the GAP8 parallel ultra-low power platform (PULP), a heterogeneous multi-core processor equipped with a fabric controller (FC); a cluster ...

    Cristian Ramírez, Adrián Castelló, Héctor Martínez in The Journal of Supercomputing (2024)

  3. Article

    Open Access

    3D reconstruction system and multiobject local tracking algorithm designed for billiards

    The use of virtual reality or augmented reality systems in billiards sports are useful tools for pure entertainment or improving the player’s skills. Depending on the purpose of these systems, tracking algorit...

    Francisco J. Rodriguez-Lozano, Juan C. Gámez-Granados in Applied Intelligence (2023)

  4. Article

    Open Access

    Efficient and portable Winograd convolutions for multi-core processors

    We take a step forward towards develo** high-performance codes for the convolution operator, based on the Winograd algorithm, that are easy to customise for general-purpose processor architectures. In our ap...

    Manuel F. Dolz, Héctor Martínez, Adrián Castelló in The Journal of Supercomputing (2023)

  5. Article

    Open Access

    Performance–energy trade-offs of deep learning convolution algorithms on ARM processors

    In this work, we assess the performance and energy efficiency of high-performance codes for the convolution operator, based on the direct, explicit/implicit lowering and Winograd algorithms used for deep learn...

    Manuel F. Dolz, Sergio Barrachina, Héctor Martínez in The Journal of Supercomputing (2023)

  6. Article

    Open Access

    Micro-kernels for portable and efficient matrix multiplication in deep learning

    We provide a practical demonstration that it is possible to systematically generate a variety of high-performance micro-kernels for the general matrix multiplication (gemm) via generic templates which can be easi...

    Guillermo Alaejos, Adrián Castelló, Héctor Martínez in The Journal of Supercomputing (2023)

  7. No Access

    Chapter and Conference Paper

    GEMM-Like Convolution for Deep Learning Inference on the **linx Versal

    We revisit a blocked formulation of the direct convolution algorithm that mimics modern realizations of the general matrix multiplication (gemm), demonstrating that the same approach can be adapted to deliver hig...

    Jie Lei, Héctor Martínez, José Flich in High Performance Computing (2023)

  8. No Access

    Chapter and Conference Paper

    Performance Analysis of Convolution Algorithms for Deep Learning on Edge Processors

    We provide a complete performance comparison of two realizations of the convolution, based on the lowering approach and a blocked variant of the direct convolution algorithm. The theoretical analysis focuses o...

    Pedro Alonso-Jordá, Héctor Martínez in Parallel Processing and Applied Mathematics (2023)

  9. Article

    Open Access

    Emergence of Third-Order Conditional Discriminations from Learning Discriminations with Unrelated Stimuli

    This study explored learning and generalization of a third-order conditional discrimination. Two 8-year-old children learned two auditory–visual conditional discriminations in which they selected visual Japane...

    Luis Antonio Pérez-González, Héctor Martínez in The Psychological Record (2022)

  10. No Access

    Chapter and Conference Paper

    Performance Analysis of Matrix Multiplication for Deep Learning on the Edge

    The devices designed for the Internet-of-Things encompass a large variety of distinct processor architectures, forming a highly heterogeneous zoo. In order to tackle this, we employ a simulator to estimate the...

    Cristian Ramírez, Adrián Castelló in High Performance Computing. ISC High Perfo… (2022)

  11. No Access

    Protocol

    History and Trends of 3D Bioprinting

    The field of bioprinting is rapidly evolving as researchers innovate and drive the field forward. This chapter provides a brief overview of the history of bioprinting from the first described printer system in...

    Patrick Thayer, Hector Martinez, Erik Gatenholm in 3D Bioprinting (2020)

  12. No Access

    Article

    Autophagy Induction by Bexarotene Promotes Mitophagy in Presenilin 1 Familial Alzheimer’s Disease iPSC-Derived Neural Stem Cells

    Adult neurogenesis defects have been demonstrated in the brains of Alzheimer’s disease (AD) patients. The neurogenesis impairment is an early critical event in the course of familiar AD (FAD) associated with n...

    Patricia Martín-Maestro, Andrew Sproul, Hector Martinez in Molecular Neurobiology (2019)

  13. No Access

    Reference Work Entry In depth

    Development of Nanocellulose-Based Bioinks for 3D Bioprinting of Soft Tissue

    3D bioprinting technology is expected to revolutionize the field of medicine and health care particularly within soft tissue repair and reconstruction. Surgical needs for soft tissue repair include nose, ear, ...

    Paul Gatenholm, Hector Martinez, Erdem Karabulut in 3D Printing and Biofabrication (2018)

  14. No Access

    Chapter and Conference Paper

    Accelerating FaST-LMM for Epistasis Tests

    We introduce an enhanced version of FaST-LMM that maintains the sensitivity of this software when applied to identify epistasis interactions while delivering an acceleration factor that is close to 7.5 ...

    Héctor Martínez, Sergio Barrachina in Algorithms and Architectures for Parallel … (2017)

  15. No Access

    Living Reference Work Entry In depth

    Development of Nanocellulose-Based Bioinks for 3D Bioprinting of Soft Tissue

    3D bioprinting technology is expected to revolutionize the field of medicine and health care particularly within soft tissue repair and reconstruction. Surgical needs for soft tissue repair include nose, ear, ...

    Paul Gatenholm, Hector Martinez, Erdem Karabulut in 3D Printing and Biofabrication

  16. No Access

    Article

    Automated, high-throughput derivation, characterization and differentiation of induced pluripotent stem cells

    A modular, robotic system for reprogramming to induced pluripotent stem cells in high-throughput and automated fashion.

    Daniel Paull, Ana Sevilla, Hongyan Zhou, Aana Kim Hahn, Hesed Kim in Nature Methods (2015)

  17. Article

    Open Access

    Rapid and Efficient Generation of Transgene-Free iPSC from a Small Volume of Cryopreserved Blood

    Human peripheral blood and umbilical cord blood represent attractive sources of cells for reprogramming to induced pluripotent stem cells (iPSCs). However, to date, most of the blood-derived iPSCs were generat...

    Hongyan Zhou, Hector Martinez, Bruce Sun, Aiqun Li in Stem Cell Reviews and Reports (2015)

  18. No Access

    Article

    Human oocytes reprogram somatic cells to a pluripotent state

    The exchange of the oocyte’s genome with the genome of a somatic cell, followed by the derivation of pluripotent stem cells, could enable the generation of specific cells affected in degenerative human disease...

    Scott Noggle, Ho-Lim Fung, Athurva Gore, Hector Martinez, Kathleen Crumm Satriani in Nature (2011)

  19. No Access

    Article

    Control by Contextual Stimuli in Novel Second-Order Conditional Discriminations

    Eighteen undergraduates participated in studies designed to examine the factors that produce transfer of contextual functions to novel stimuli in second-order conditional discriminations. In Study 1, participa...

    Luis Antonio Pérez-González, Héctor Martínez in The Psychological Record (2007)

  20. No Access

    Article

    Interactions of Contingencies, Instructional Accuracy, and Instructional History in Conditional Discrimination

    In two experiments, 40 undergraduate students were trained on conditional discrimination tasks (matching to sample) involving 1 of 4 types of instructional histories: (a) true instructions followed by false in...

    Hector Martinez, Ricardo Tamayo in The Psychological Record (2005)

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