problem
situation that invites resolution
many-body problem
physical problem pertaining to the properties of microscopic systems made of a large number of interacting particles
capital question of Switzerland
controversy whether Switzerland should have a capital, and if so, which city it should be
measurement problem
in quantum mechanics, the problem of how or whether wave function collapse occurs during measurement
abandoned pet
abandoned companion animals
aggregation problem
difficulty of treating an empirical or theoretical aggregate as if it reacted like a less-aggregated measure
aggregation problem
difficulty of treating an empirical or theoretical aggregate as if it reacted like a less-aggregated measure
historicity of Jesus
debate whether Jesus was a historical figure
measure problem
problem in cosmology about defining a probability distribution over a multiverse
cosmological lithium problem
discrepancy between the observed abundance of lithium produced in Big Bang nucleosynthesis and the amount that should theoretically exist
lateness
property of an event occurring after its scheduled, intended, expected, or required time
license proliferation
creation of many new software licenses
teapot effect
phenomenon in fluid dynamics
economic problem
fundamental problem of economics, satisfying unlimited wants with limited resources
fermion doubling
in physics, the problem of formulating fermions in a lattice field theory
leaning toothpick syndrome
escape characters making an expression unreadable
vanishing gradient problem
machine learning model training problem
plague
grave nuisance
name resolution in text mining
determination of the specific person, actor, or object a particular use of a name refers to
contamination
presence of an unwanted constituent, harmful substance or impurity in a material, physical body, or environment
task
activity that is planned to be or should be accomplished
global problem
any global social, economic, political or environmental problem that has already arisen or can arise from global change or globalization
theme
Problem that needs to be solved based on a certain knowledge
network congestion
reduced quality of service due to high traffic on a computer network
dilemma
problem offering two possibilities, neither of which is unambiguously acceptable or preferable
demarcation problem
about how to distinguish between science and nonscience, including between science, pseudoscience, and other products of human activity, like art and literature, and beliefs
named-entity recognition
extraction of named entity mentions in unstructured text into pre-defined categories
horizon problem
cosmological fine-tuning problem
ground loop
electrical configuration allowing electricity to cross between grounded devices
social issue
problem that influences a considerable number of individuals within a society
arrears
describes problems with the payment of loans
angular momentum problem
Problem in astrophysics
horizon effect
weakness of game-playing artificial intelligence
G-dwarf problem
star problem not similar to the Sun
linear programming relaxation
linear program that arises by removing the integrality constraints in an integer program
health problem
condition negatively affecting the health of an organism
fuel starvation
problem affecting internal combustion engines
emergency
need for help: problem, difficulty, poverty
difficulty
specific problem or obstacle impeding achievement of a goal
correspondence problem
ascertaining which parts of one image correspond to which parts of another image, where differences are due to movement of the camera, the elapse of time, and/or movement of objects in the photos
graceful exit problem
flaw in old (non-slow-roll) inflationary cosmological models in which an energy barrier prevents the universe from escaping inflation
Black Pete discussion
debate in the Netherlands about the stereotype of Black Pete
Japan's comfort women issue
Discussion on Japan's national responsibility for the comfort women of the former Japanese military
political status of Crimea
dispute between Russia and Ukraine over the status of Crimea
Hidden Matching Problem
computation complexity problem
meaning of life
philosophical and spiritual question concerning the significance of living or existence in general
priority inversion
undesirable computing scheduling scenario