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Daniel Kottke
Daniel Kottke, also known as Dan Kottke, is an American computer engineer who was Apple employee No. 12 and worked on the Apple-1 and Macintosh.
Daniel Lewin
Daniel Lewin, also known as Danny Lewin, was an Israeli-American computer scientist who co-founded Akamai Technologies and is identified as the first victim of the September 11 attacks.
Daniela Amodei
Daniela Amodei is an American entrepreneur who co-founded the AI company Anthropic in 2021 and serves as its president, running it day to day alongside her brother, CEO Dario Amodei.
Danijar Hafner
Danijar Hafner is an AI researcher and startup founder known for creating the PlaNet and Dreamer world-model reinforcement-learning algorithms, who left Google DeepMind in 2025.
Dante (networking)
Dante, also called the Dante protocol, is a proprietary audio-video-over-IP platform developed by the Australian company Audinate, distributing digital audio, video, and control over standard Ethernet networks.
DAPO
DAPO is an open-source reinforcement learning recipe for training large language models on reasoning tasks, released in March 2025 by ByteDance Seed and Tsinghua University researchers.
DARE (Drop And REscale)
DARE (Drop And REscale) is a sparsification method for large language model fine-tuning deltas, introduced by Le Yu and colleagues in November 2023, that randomly drops most delta parameters and rescales the rest.
Dario Amodei
Dario Amodei, born 1983, is an American AI researcher and entrepreneur who co-founded Anthropic in 2021 and leads it as CEO after serving as OpenAI's vice president of research.
Dark web
The dark web, also called Onionland, is the portion of the internet reachable only through anonymizing networks like Tor, used by journalists and dissidents but also hosting criminal marketplaces.
Dark Web (disambiguation)
The dark web is the hidden part of the web hosted on anonymity networks like Tor, reachable only with special software, and known for both illicit markets and legitimate uses.
Darknet
A darknet is an overlay network on the public internet, reachable only with special software or authorization, hosting the anonymous dark web; the largest is Tor.
Darktrace
Darktrace is a British cybersecurity company in Cambridge, England, founded in 2013, whose AI platform detects and responds to network, email, cloud, and endpoint threats.
Darlington transistor
The Darlington transistor, also called a Darlington pair or Darlington circuit, combines two bipolar transistors so the pair acts as one with a current gain of 1000 or more.
Dart (programming language)
Dart is an open-source, client-optimized programming language developed by Google, announced in 2011 and best known as the language behind the Flutter toolkit for mobile, desktop, and web apps.
Dartmouth workshop
The Dartmouth workshop, formally the Dartmouth Summer Research Project on Artificial Intelligence, was a 1956 summer gathering at Dartmouth College regarded as the founding event of AI.
Darwin (operating system)
Darwin, also known as Apple Darwin, is the open source operating system Apple develops as the core of macOS, iOS, and its other operating systems.
Das U-Boot
Das U-Boot, usually shortened to U-Boot, is a free, open-source boot loader for ARM, MIPS, PowerPC, RISC-V, x86, and other architectures, supporting over 1200 embedded boards.
Dask
Dask is an open-source Python library for parallel and distributed computing built on task graphs. It scales pandas, NumPy, and list-like workflows through Dask DataFrame, Array, and Bag collections, with single-machine and distributed schedulers; BSD-3 licensed, NumFOCUS-sponsored, latest release 2026.8.0.
Dassault Systèmes
Dassault Systèmes, also known as Dassault Systèmes SE, is a French software company founded in 1981 by engineers from Dassault Aviation, known for its CATIA and SOLIDWORKS design software.
Data (Use and Access) Act 2025
The Data (Use and Access) Act 2025 is a United Kingdom act reforming data protection law and regulating digital verification, Smart Data schemes, and automated decisions.
Data access object
The data access object (DAO) pattern is a software design pattern in which an object provides an abstract interface for reading and writing a data source.
Data age and temporal mixture effects
Data age and temporal mixture effects describe how the age of a language model's pretraining data affects its performance, degrading about 2.8 points per year of misalignment.
Data analyst
Data analyst: professional who collects, cleans, models and communicates data to support decisions; also called junior or departmental analyst. UK Level 4 standard, four government role levels, £28,000 to £65,000 pay, SQL and visualisation core skills.
Data and Reality
Data and Reality (1978) by William Kent, subtitled Basic Assumptions in Data Processing Reconsidered, is a classic data modeling book arguing data structures are imperfect maps of reality; reissued in 2012 with Steve Hoberman.
Data annotation
Data annotation is the process of attaching human labels to images, text, audio, or video so machine learning models can be trained and tested against it.
Data anonymization
Data anonymization is the processing of personal data so individuals can no longer be identified, even with other reasonably available information; it is the strictest form of de-identification.
Data architect
Data architect: senior IT role defining an organization's data policies, models, and technologies; distinct from data engineer; spans EDW, data lake, and cloud/AI architectures; US average pay about $135,377 (2024).
Data architecture
Data architecture: the design discipline defining how organizations collect, store, transform, and govern data. Also spans data warehouse, lake, lakehouse, mesh, and fabric patterns; evolves from EDW to active-metadata and AI-native designs.
Data at rest
Data at rest is stationary data on persistent storage like databases, file shares, backups, and cloud buckets, one of three data states alongside data in transit and data in use.
Data breach
A data breach is an event in which protected data is accessed or disclosed by someone not authorized, ranging from a lost laptop to ransomware campaigns.