Artificial intelligence and data

Open table format

Open table formats (Apache Hudi, Apache Iceberg, Delta Lake, Apache Paimon) are open specifications combining table metadata and a transaction protocol that give ACID transactions, schema evolution, and time travel to data files like Parquet on object storage, the foundation of the data lakehouse.

OpenAlex

OpenAlex is a free, open catalog of scholarly documents and related entities, launched by OurResearch on January 1, 2022 as a replacement for Microsoft Academic Graph.

OpenBookQA

OpenBookQA is a multiple-choice question answering dataset from the Allen Institute for AI, published in 2018, testing reasoning that combines science facts with common knowledge.

OpenCV

OpenCV (Open Source Computer Vision Library) is an open-source computer vision library conceived by Gary Bradski at Intel and unveiled in 2000, now among the most widely used vision codebases.

OpenFace

OpenFace is the shared name of two open-source facial analysis projects from Carnegie Mellon University: a facial behavior analysis toolkit and a face recognition library.

OpenLineage

OpenLineage is an open standard and API for data lineage collection from running pipelines, using Run, Job, and Dataset events with extensible facets. An LF AI & Data graduated project donated by Datakin, integrated with Airflow, Spark, dbt, Snowflake, and DataHub.

OpenMetadata

OpenMetadata is an open-source metadata platform (Apache-2.0 core, Collate commercial edition) unifying data catalog, lineage, quality, governance, and observability, with 130+ connectors, JSON Schema-first design, and an MCP server for AI agents; released 2021, version 2.0 in 2026.

OpenMMLab

OpenMMLab is an open-source family of PyTorch-based computer vision toolboxes such as MMDetection, launched in 2018 by the Multimedia Lab, a joint SenseTime and Chinese University of Hong Kong laboratory.

OpenPose

OpenPose is an open-source library for real-time multi-person 2D human pose estimation developed at Carnegie Mellon University, detecting body, hand, facial, and foot keypoints in images and video.

OpenVINO

OpenVINO, short for Open Visual Inference and Neural Network Optimization, is Intel's open-source toolkit for deploying fast deep learning inference on Intel hardware, announced in 2018.

Operational analytics

Operational analytics (also operational BI, operational intelligence) applies analytics directly to operational systems like POS, ERP, IoT, and CRM in near real time to monitor, optimize, and automate day-to-day business processes.

Operational data store

Operational data store (ODS), or operational data layer (ODL): a subject-oriented, integrated, near-real-time database consolidating data from multiple transactional systems for operational reporting, distinct from data warehouses holding historical analytical data.

Operational transformation

Operational transformation (OT) is a consistency-control technique for collaborative editing, introduced by Ellis and Gibbs in 1989, that transforms concurrent operations so replicas converge; it underpins Google Docs, Microsoft Office, and Overleaf.

Operations research

Operations research (OR), also called operational research, is an interdisciplinary field using mathematical models, optimization, and simulation to improve decisions, efficiency, and resource allocation in organizations.

Operator inference

Operator inference (OpInf) is a non-intrusive scientific machine learning method that fits low-dimensional polynomial dynamical systems to simulation snapshots, introduced by Peherstorfer and Willcox in 2016.

Operator learning

Operator learning is a machine learning approach that trains neural networks to approximate mappings between infinite-dimensional function spaces, typically PDE solution operators, serving as fast surrogates in design and uncertainty quantification.

Oct 21, 2026

Opifex

Opifex (Latin: maker, craftsman) names an open-source JAX/Flax NNX scientific machine learning framework by avitai, an indie app studio behind Return, and unrelated companies in Australia, Norway, Poland, India, the UK, and the US.

Opposition-based learning

Opposition-based learning is a machine intelligence technique that pairs each candidate solution with its opposite point in the search space, keeping the fitter to speed convergence.

Optical character recognition

Optical character recognition (OCR), also known as an optical character reader, is a technology that converts images of text, such as scans and image-only PDFs, into searchable, editable machine-readable text.

Optical mark recognition

Optical mark recognition (OMR), also called optical mark reading, is a technology that detects pencil or ink marks in fixed positions on forms like answer sheets.

Optical neural network

An optical neural network (ONN) is a computing architecture that implements artificial neural networks with lasers, modulators, and photodetectors, performing the matrix multiplications that dominate deep learning.

OPTICS algorithm

OPTICS (Ordering Points To Identify the Clustering Structure) is a density-based clustering algorithm, presented at ACM SIGMOD in 1999, that orders points by reachability distance to find clusters of varying density.

Oct 22, 2026

OPTIMADE

OPTIMADE (Open Databases Integration for Materials Design) is a consortium of materials database providers whose standard REST API lets one query work across independent databases.

Optimal control

Optimal control, also called optimal control theory, is the branch of mathematical optimization that drives a dynamical system along a desired trajectory at minimum cost.

Optimistic concurrency control

Optimistic concurrency control (OCC) is a transaction-processing technique that runs transactions without locks, checking for conflicts only at commit time and aborting conflicting transactions; it suits low-contention, read-mostly workloads.

Optimization problem

An optimization problem is the mathematical task of finding the best value of an objective function over a domain called the search space, whose valid points are feasible solutions.

Oracle Autonomous Data Warehouse

Oracle Autonomous Data Warehouse (ADW) is Oracle's self-managing cloud data warehouse, launched March 2018 on Oracle Database 18c, offering automated patching, tuning, and scaling, and now continuing as Autonomous AI Lakehouse.

Oracle Database

Oracle Database, also known as Oracle RDBMS, is a commercial multi-model relational database management system sold by Oracle Corporation, first released in 1979 as the first commercial SQL-based RDBMS.

Oracle GoldenGate

Oracle GoldenGate is a log-based change data capture and real-time data replication platform that continuously captures committed transactions from database transaction logs and applies them to other databases with minimal impact on the source.