Machine Learning

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Incompatibility of Fairness Metrics

The incompatibility of fairness metrics (also called the impossibility theorem of fairness or fairness trade-offs) is the proven mathematical result that several widely used definitions of algorithmic fairness…

AI Ethics

Individual Fairness

Individual fairness is the principle in machine learning that any two individuals who are similar with respect to a task should receive similar algorithmic outcomes.

AI Ethics

Inference optimization

Inference optimization is the set of techniques that make running a trained artificial intelligence model, especially a large language model, faster, more memory-efficient, and cheaper to serve in production.

Large Language Models

Inference path

The inference path is the sequence of nodes that a single example visits as it travels from the root node of a decision tree down to a leaf node during prediction.

Information Gain

Information Gain (IG) is a measure from information theory that quantifies the reduction in entropy (uncertainty) achieved by partitioning a dataset on a particular feature: it equals the entropy of the parent…

Mathematics

Input Layer

The input layer is the first layer of a neural network: it receives the raw feature vector for each data sample and passes those values forward to the next layer, performing no learned computation of its own.

Deep LearningNeural Networks

Instance

In machine learning and statistics, an instance is a single data point in a dataset: the values of one row of features and, optionally, a label.

Data & Datasets

Interpretability

Interpretability in artificial intelligence concerns what people can learn about a system's behavior, predictions, or internal computations, and whether that understanding is reliable enough for a stated…

AI EthicsModel Evaluation

Inverse graphics

Inverse graphics is the problem of recovering, from one or more images, a description of the scene that produced them: the geometry, materials, lighting, camera, and in some formulations the motion and…

AI ResearchComputer Vision

Iris dataset

The Iris dataset, sometimes referred to as Fisher's Iris dataset or the Iris flower dataset, is a multivariate dataset introduced by the British statistician and biologist Ronald Fisher in his 1936 paper "The…

AI BenchmarksData & Datasets

Item matrix

In collaborative filtering and matrix factorization recommender systems, the item matrix (commonly written V, sometimes Q or H) is the matrix of latent-factor vectors for items: each row holds one item's…

Items

In recommendation systems, items are the entities that the system recommends to users. Google's recommendation systems course defines an item, also called a document, as "the entities a system recommends.

Iteration

An iteration in machine learning is a single update of a model's parameters during training, performed by processing one batch of data: the model makes predictions on the batch (a forward pass), computes the…

Deep Learning

JAX

JAX is an open-source Python library for accelerator-oriented array computation and program transformation.

Deep Learning

Jev (AI model)

Jev is an AI model released in waitlisted early access on 15 September 2026, and opened to all developers on 20 September, by TypeSafe AI, a San Francisco startup founded in 2024 by former OpenAI researcher…

AI InferenceAI Models

John Giannandrea

John Giannandrea is a Scottish-born software engineer and technology executive who ran artificial intelligence organizations at two of the largest consumer technology companies in the world.

Artificial IntelligenceGoogle

JumpReLU SAE

A JumpReLU sparse autoencoder (JumpReLU SAE) is a variant of the sparse autoencoder used in mechanistic interpretability whose encoder applies a learnable per-feature threshold that forces a feature to exactly…

AI Safety

K-Means

K-means is an unsupervised machine learning clustering algorithm that partitions a dataset into k distinct, non-overlapping clusters by repeatedly assigning each data point to its nearest cluster center and…

K-Median

K-median clustering (also written k-medians) is a partitioning-based clustering algorithm that divides a dataset of…

KV-cache quantization

KV cache quantization is a family of large language model inference optimizations that store the attention key and value (KV) cache in low-bit numeric formats, typically 2 to 4 bits per value

AI Infrastructure

Kalman Filter

The Kalman filter is a recursive algorithm that estimates the hidden state of a dynamic system from a sequence of noisy measurements.

AlgorithmsRobotics

Keras

Keras is an open-source, high-level neural network API written in Python that lets developers build, train, and deploy deep learning models with minimal code.

AI Tools & ProductsDeep Learning

Kernel Support Vector Machines (KSVMs)

A kernel support vector machine (kernel SVM, or KSVM) is a supervised learning algorithm that finds the maximum-margin boundary between two classes after implicitly mapping the data into a high-dimensional…

Kubeflow

Kubeflow is an open-source MLOps platform that runs the entire machine learning lifecycle on Kubernetes, described by its creators as a project "dedicated to making using ML stacks on Kubernetes easy, fast and…

Developer ToolsMLOps

L1 Regularization

L1 regularization is a regularization technique in machine learning and statistics that prevents overfitting by adding the sum of the absolute values of a model's parameters as a penalty term to the loss…

Training & Optimization

Label

In machine learning, a label is the target output value associated with a single training example: the correct answer that a supervised learning model is trained to predict.

Data & Datasets

Labeled example

A labeled example is a single data point used to train a machine learning model that consists of one or more input features paired with the correct answer, called the label.

Lambda

Lambda (the Greek letter λ) is a symbol used across machine learning, statistics, and computer science to denote several distinct quantities

Mathematics

Landmarks

Landmarks are reference points used as anchors in two largely separate areas of machine learning.

Computer Vision

Large Behavior Model

A Large Behavior Model (LBM) is a single neural network for robotics that is pretrained on large, diverse datasets of robot demonstrations and outputs robot actions

Embodied AIRobotics

Lasso Regression

Lasso regression (an acronym for Least Absolute Shrinkage and Selection Operator) is a linear regression method, named and popularized by Robert Tibshirani in 1996, that adds an L1 penalty to the ordinary…

Training & Optimization

Latent Space

A latent space is the vector space a machine learning model maps its inputs into, where each input becomes a point (a latent vector or latent code) and the geometry of the space carries information the raw…

Deep LearningGenerative AI

Layer

A layer is the fundamental building block of a neural network: an organized group of neurons (also called nodes or units) that together apply one mathematical transformation to their input and pass the result…

Deep LearningNeural Networks