4 papers
Fault-Free Profiles and Decision-Level Training for Root Cause Analysis via Small Language Models
Kyoohyun Lee, Woohyeok Park, Taeyoon Kim +2
Root cause analysis (RCA) in microservice systems requires distinguishing failure sources from routine fluctuations and propagated symptoms. Small language models (SLMs) offer a pr…
Vivace: Exact Temporal OLAP over Interval Histories via Independent Serverless Execution
Woohyeok Park, Taeyoon Kim, Hyunjoon Kim +1
Temporal online analytical processing (OLAP) analyzes past states of data whose values change over time. Such histories are naturally stored as interval histories, in which each ro…
Why Do AI Agents Systematically Fail at Cloud Root Cause Analysis?
Taeyoon Kim, Woohyeok Park, Hoyeong Yun +1
Failures in large-scale cloud systems incur substantial financial losses, making automated Root Cause Analysis (RCA) essential for operational stability. Recent efforts leverage La…
HYPERDOA: Robust and Efficient DoA Estimation using Hyperdimensional Computing
Rajat Bhattacharjya, Woohyeok Park, Arnab Sarkar +3
Direction of Arrival (DoA) estimation techniques face a critical trade-off, as classical methods often lack accuracy in challenging, low signal-to-noise ratio (SNR) conditions, whi…