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This study proposes a novel storage engine, SynchroStore, designed to address the inefficiency of update operations in columnar storage systems based on Log-Structured Merge Trees (LSM-Trees) under hybrid workload scenarios. While columnar…

Databases · Computer Science 2025-03-25 Yinan Zhang , Huiqi Hu , Xuan Zhou

Reservoir computing (RC), is a class of computational methods such as Echo State Networks (ESN) and Liquid State Machines (LSM) describe a generic method to perform pattern recognition and temporal analysis with any non-linear system. This…

Machine Learning · Computer Science 2024-11-19 Anmol Biswas , Sharvari Ashok Medhe , Raghav Singhal , Udayan Ganguly

Inspired by the feedforward multilayer perceptron (FF-MLP), decision tree (DT) and extreme learning machine (ELM), a new classification model, called the subspace learning machine (SLM), is proposed in this work. SLM first identifies a…

Machine Learning · Computer Science 2022-05-12 Hongyu Fu , Yijing Yang , Vinod K. Mishra , C. -C. Jay Kuo

Log-Structured Merge-tree-based Key-Value Stores (LSM-KVS) have been optimized and redesigned for disaggregated storage via techniques such as compaction offloading to reduce the network I/Os between compute and storage. However, the…

Databases · Computer Science 2026-03-06 Qi Lin , Gangqi Huang , Te Guo , Chang Guo , Viraj Thakkar , Zichen Zhu , Jianguo Wang , Zhichao Cao

Small Language Models (SLMs) have become increasingly important due to their efficiency and performance to perform various language tasks with minimal computational resources, making them ideal for various settings including on-device,…

The Log Structured Merge (LSM) Tree is a popular choice for key-value stores that focus on optimized write throughput while maintaining performant, production-ready read latencies. To optimize read performance, LSM stores rely on a…

Databases · Computer Science 2025-02-18 Hayder Tirmazi

LSM-tree based key-value (KV) stores organize data in a multi-level structure for high-speed writes. Range queries on traditional LSM-trees must seek and sort-merge data from multiple table files on the fly, which is expensive and often…

Databases · Computer Science 2021-01-27 Wenshao Zhong , Chen Chen , Xingbo Wu , Song Jiang

LSM-tree based key-value stores are widely adopted as the data storage backend in modern big data applications. The LSM-tree grows with data ingestion, by either adding levels with fixed level capacities (dubbed as vertical scheme) or…

Databases · Computer Science 2025-04-25 Dingheng Mo , Siqiang Luo , Stratos Idreos

Key-Value Stores (KVS) implemented with log-structured merge-tree (LSM-tree) have gained widespread acceptance in storage systems. Nonetheless, a significant challenge arises in the form of high write amplification due to the compaction…

Databases · Computer Science 2025-08-20 Jianshun Zhang , Fang Wang , Sheng Qiu , Yi Wang , Jiaxin Ou , Junxun Huang , Baoquan Li , Peng Fang , Dan Feng

LSM-trees are widely adopted as the storage backend of key-value stores. However, optimizing the system performance under dynamic workloads has not been sufficiently studied or evaluated in previous work. To fill the gap, we present RusKey,…

Databases · Computer Science 2023-09-19 Dingheng Mo , Fanchao Chen , Siqiang Luo , Caihua Shan

Embedding fusion has emerged as an effective approach for enhancing performance across various NLP tasks. However, systematic guidelines for selecting optimal layers and developing effective fusion strategies for the integration of LLMs…

Computation and Language · Computer Science 2025-04-09 Jiho Gwak , Yuchul Jung

A log structured store uses a single write I/O for a number of diverse and non-contiguous pages within a large buffer instead of using a write I/O for each page separately. This requires that pages be relocated on every write, because pages…

Databases · Computer Science 2020-05-04 David Lomet , Chen Luo

In the last decade, document store database systems have gained more traction for storing and querying large volumes of semi-structured data. However, the flexibility of the document stores' data models has limited their ability to store…

Databases · Computer Science 2021-11-24 Wail Y. Alkowaileet , Michael J. Carey

Large language models (LLMs) have demonstrated exceptional proficiency in understanding and generating human language, but efficient inference on resource-constrained embedded devices remains challenging due to large model sizes and…

Hardware Architecture · Computer Science 2025-07-15 Weihong Xu , Haein Choi , Po-kai Hsu , Shimeng Yu , Tajana Rosing

Despite the remarkable success of Large Language Models (LLMs), the massive size poses significant deployment challenges, particularly on resource-constrained hardware. While existing LLM compression methods focus on quantization, pruning…

Artificial Intelligence · Computer Science 2023-10-12 Song Guo , Jiahang Xu , Li Lyna Zhang , Mao Yang

Key-Value Stores (KVS) based on log-structured merge-trees (LSM-trees) are widely used in storage systems but face significant challenges, such as high write amplification caused by compaction. KV-separated LSM-trees address write…

Databases · Computer Science 2025-08-20 Jianshun Zhang , Fang Wang , Jiaxin Ou , Yi Wang , Ming Zhao , Sheng Qiu , Junxun Huang , Baoquan Li , Peng Fang , Dan Feng

Small Language Models (SLMs) have gained substantial attention due to their ability to execute diverse language tasks successfully while using fewer computer resources. These models are particularly ideal for deployment in limited…

Computation and Language · Computer Science 2025-05-30 Tanjil Hasan Sakib , Md. Tanzib Hosain , Md. Kishor Morol

Solid-state drives (SSDs) are extensively used to deploy persistent data stores, as they provide low latency random access, high write throughput, high data density, and low cost. Tree-based data structures are widely used to build…

Databases · Computer Science 2020-06-09 Diego Didona , Nikolas Ioannou , Radu Stoica , Kornilios Kourtis

We introduce BOURBON, a log-structured merge (LSM) tree that utilizes machine learning to provide fast lookups. We base the design and implementation of BOURBON on empirically-grounded principles that we derive through careful analysis of…

We propose a method to create document representations that reflect their internal structure. We modify Tree-LSTMs to hierarchically merge basic elements such as words and sentences into blocks of increasing complexity. Our Structure…

Computation and Language · Computer Science 2019-10-08 Khalil Mrini , Claudiu Musat , Michael Baeriswyl , Martin Jaggi