arXiv subjects

Jessica Ray

Publications and source records attributed to Jessica Ray.

3 recordsLinked to original sources

arXiv2024

Enhancing EHR Systems with data from wearables: An end-to-end Solution for monitoring post-Surgical Symptoms in older adults

Mobile health (mHealth) apps have gained popularity over the past decade for patient health monitoring, yet their potential for timely intervention is underutilized due to limited integration with electronic health records (EHR) systems. Current EHR systems lack real-time monitoring capabilities for symptoms, medication adherence, physical and social functions, and community integration. Existing systems typically rely on static, in-clinic measures rather than dynamic, real-time patient data. This highlights the need for automated, scalable, and human-centered platforms to integrate patient-generated health data (PGHD) within EHR. Incorporating PGHD in a user-friendly format can enhance patient symptom surveillance, ultimately improving care management and post-surgical outcomes. To address this barrier, we have developed an mHealth platform, ROAMM-EHR, to capture real-time sensor data and Patient Reported Outcomes (PROs) using a smartwatch. The ROAMM-EHR platform can capture data from a consumer smartwatch, send captured data to a secure server, and display information within the Epic EHR system using a user-friendly interface, thus enabling healthcare providers to monitor post-surgical symptoms effectively.

q-bio.QM↗

arXiv2018

Tiramisu: A Polyhedral Compiler for Expressing Fast and Portable Code

This paper introduces Tiramisu, a polyhedral framework designed to generate high performance code for multiple platforms including multicores, GPUs, and distributed machines. Tiramisu introduces a scheduling language with novel extensions to explicitly manage the complexities that arise when targeting these systems. The framework is designed for the areas of image processing, stencils, linear algebra and deep learning. Tiramisu has two main features: it relies on a flexible representation based on the polyhedral model and it has a rich scheduling language allowing fine-grained control of optimizations. Tiramisu uses a four-level intermediate representation that allows full separation between the algorithms, loop transformations, data layouts, and communication. This separation simplifies targeting multiple hardware architectures with the same algorithm. We evaluate Tiramisu by writing a set of image processing, deep learning, and linear algebra benchmarks and compare them with state-of-the-art compilers and hand-tuned libraries. We show that Tiramisu matches or outperforms existing compilers and libraries on different hardware architectures, including multicore CPUs, GPUs, and distributed machines.

cs.PL↗

arXiv2018

Technical Report about Tiramisu: a Three-Layered Abstraction for Hiding Hardware Complexity from DSL Compilers

High-performance DSL developers work hard to take advantage of modern hardware. The DSL compilers have to build their own complex middle-ends before they can target a common back-end such as LLVM, which only handles single instruction streams with SIMD instructions. We introduce Tiramisu, a common middle-end that can generate efficient code for modern processors and accelerators such as multicores, GPUs, FPGAs and distributed clusters. Tiramisu introduces a novel three-level IR that separates the algorithm, how that algorithm is executed, and where intermediate data are stored. This separation simplifies optimization and makes targeting multiple hardware architectures from the same algorithm easier. As a result, DSL compilers can be made considerably less complex with no loss of performance while immediately targeting multiple hardware or hardware combinations such as distributed nodes with both CPUs and GPUs. We evaluated Tiramisu by creating a new middle-end for the Halide and Julia compilers. We show that Tiramisu extends Halide and Julia with many new capabilities including the ability to: express new algorithms (such as recurrent filters and non-rectangular iteration spaces), perform new complex loop nest transformations (such as wavefront parallelization, loop shifting and loop fusion) and generate efficient code for more architectures (such as combinations of distributed clusters, multicores, GPUs and FPGAs). Finally, we demonstrate that Tiramisu can generate very efficient code that matches the highly optimized Intel MKL gemm (generalized matrix multiplication) implementation, we also show speedups reaching 4X in Halide and 16X in Julia due to optimizations enabled by Tiramisu.

cs.PL↗