spatio-temporal

JD Tech Talk

Dec 30, 2020 · Databases

Architecture and Application Practice of JD Urban Spatio-Temporal Data Engine (JUST)

The presentation details the design, implementation, and real‑world applications of the JD Urban Spatio‑Temporal Data Engine (JUST), a distributed, scalable database that handles massive, complex spatio‑temporal data with novel storage, indexing, and query techniques, demonstrating high performance and ease of use across smart‑city scenarios.

DatabaseGISIndexing

0 likes · 26 min read

Architecture and Application Practice of JD Urban Spatio-Temporal Data Engine (JUST)

JD Tech Talk

Dec 29, 2020 · Artificial Intelligence

Robust Spatio-Temporal Purchase Prediction via Deep Meta Learning

The paper proposes a deep meta‑learning framework that generates spatio‑temporal representations for retail sales forecasting, especially during large shopping festivals, by combining amortization networks, shared statistical structures, and alternating spatial‑temporal training to achieve robust and accurate predictions despite scarce historical data.

Sales Forecastingdeep learningmeta-learning

0 likes · 9 min read

Robust Spatio-Temporal Purchase Prediction via Deep Meta Learning

JD Tech Talk

Nov 3, 2020 · Big Data

Efficient Detection of Suspected Infected Crowds Using Spatio‑Temporal Trajectory Analysis

The article presents a novel spatio‑temporal trajectory risk metric and an efficient query framework, including a space‑first index (SFT) and distributed storage, to identify high‑risk contacts of COVID‑19 patients from massive movement data, with real‑world deployment results in several Chinese cities.

COVID-19Indexingbig data

0 likes · 12 min read

Efficient Detection of Suspected Infected Crowds Using Spatio‑Temporal Trajectory Analysis