Cumulative distribution - A cumulative distribution describes how probability accumulates up to each value of a variable.
Cumulative distribution function - The cumulative distribution function, or CDF, of a real-valued random variable X is F(x) = P(X <= x).
Cumulative forecasting - Cumulative forecasting predicts the total amount of a variable over several future periods.
Cumulative incidence - Cumulative incidence is the probability that a specified event has occurred by a particular time.
CUR matrix approximation - CUR matrix approximation represents a data matrix using selected columns C, selected rows R and a connecting matrix U, so that A is approximately CUR.
Current Flow Betweenness - Current-flow betweenness is a graph centrality measure that scores a vertex by how much modeled electrical flow passes through it between other pairs of...
Current Flow Closeness - Current-flow closeness is a centrality measure based on effective resistance between vertices in an electrical-network model of a graph.
Curriculum Learning - Curriculum learning is a training strategy that deliberately changes the examples or tasks presented to a model over time, often beginning with easier...
Curse of dimensionality - The curse of dimensionality describes difficulties that can arise as the number of dimensions in a problem increases.
Curse of horizon in off-policy evaluation - The curse of horizon in off-policy evaluation refers to the difficulty of estimating a policy's performance from another policy's data as decision sequences...
Curve fitting - Curve fitting is the process of choosing parameters of a mathematical function so that the function approximates observed data according to a stated criterion.
Curve-fitting compaction - Curve-fitting compaction represents a sequence or curve using a mathematical expression and its parameters instead of storing every original point.
Curvilinear relationship - A curvilinear relationship is a relationship between variables that is better represented by a curve than by a straight line on the chosen measurement scales.
Cusum chart - A CUSUM chart, short for cumulative sum control chart, monitors a process by accumulating evidence of departures from a reference level.
Cut detection - Cut detection identifies abrupt shot transitions in a video, where one shot is replaced by another between successive frames.
Cut-off sampling - Cut-off sampling is a sampling procedure that deliberately excludes part of a target population from possible selection using a threshold or related...
Cutoff test - A cutoff test is a condition that tells a search algorithm to stop expanding a state before the complete underlying problem has necessarily ended.
Cutset conditioning - Cutset conditioning is a method for solving a constraint problem by trying assignments to a selected set of variables whose removal leaves an acyclic...
Cutting-plane method - A cutting-plane method progressively narrows an optimization search by adding valid linear inequalities called cuts.
Cuzick - Edwards test - The Cuzick - Edwards test is a statistical test for spatial clustering of cases relative to a comparison population represented by controls.
Cyber kill chain - The Cyber Kill Chain is a framework associated with Lockheed Martin for analyzing an intrusion as a sequence of stages and identifying opportunities to...
Cybersecurity - Cybersecurity is the management of risks to digital systems, services and information from unauthorized access, disruption, misuse or other harmful activity.
Cycle - A cycle is a route through a graph that returns to its starting vertex. In a simple cycle, no other vertex is repeated.
Cycle cutset - A cycle cutset is a set of vertices whose removal leaves a graph without cycles.
Cyclic solution - A cyclic solution is a plan or policy that can return to an earlier state or decision point and repeat actions.
Cyclical effect - A cyclical effect is a recurring rise and fall in a time series.
Cyclodisparity - Cyclodisparity is a difference in rotational orientation between the images presented to the two eyes, measured about the line of sight.
CYK algorithm - The CYK algorithm, named for Cocke, Younger and Kasami, is a dynamic programming method for recognizing and parsing strings with a context-free grammar.
D* - D*, or Dynamic A*, is an incremental path-planning algorithm that repairs a route when new information changes edge costs in a graph.
D-optimal design - D-optimal design selects an experimental allocation that maximizes the determinant of its information matrix.
D-Separation - D-separation is a graphical criterion for determining which conditional independences are implied by a directed acyclic graph.
DAG Processing Model - A DAG processing model represents a computation or workflow as a directed acyclic graph: nodes describe work, directed edges describe dependencies, and no...
DAgger - DAgger, short for Dataset Aggregation, is an iterative imitation-learning algorithm.
Daitch-Mokotoff Soundex - Daitch-Mokotoff Soundex is a phonetic name-coding system developed by Randy Daitch and Gary Mokotoff.
Damerau - Levenshtein distance - Damerau - Levenshtein distance measures the smallest number of edits needed to transform one string into another when the permitted unit-cost operations are...
DAMSL - DAMSL stands for Dialog Act Markup in Several Layers.
Dancing links - Dancing links is a technique for efficiently removing and restoring elements in linked data structures during backtracking.
Dangling tuple - A dangling tuple is a row in an input relation that cannot contribute to a result of the join under consideration because it lacks the required matching data.
Dark channel prior - The dark channel prior is an image-statistics assumption used in single-image haze removal.
Dark data - Dark data is information an organization has collected or retained but does not meaningfully use for analytics or decision-making.
Dark pattern - A dark pattern is a design practice that misleads, pressures or obstructs people in ways that undermine informed choice.
Data access - Data access is the ability and process through which a person or system retrieves, reads or otherwise uses data through an available interface.
Data access layer - A data access layer, often abbreviated DAL, is the part of an application responsible for interacting with stored data through a defined interface.
Data analysis - Data analysis is the process of inspecting, cleaning and summarizing data to answer a question or support a decision, ranging from simple totals and charts...
Data archaeology - Data archaeology is the recovery and interpretation of data whose original technical or organizational context has been lost, become obsolete or become...
Data architecture - Data architecture is the overall design for how an organization collects, organizes, stores, moves and makes use of data.
Data assimilation - Data assimilation is the process of combining observations with a model-based estimate to infer the state of a changing system.
Data auditing - Data auditing is a systematic examination of data and, where relevant, the processes that handle it against stated criteria.