Artificial intelligence

An Artificial intelligence (abbreviated AI) is an artificial construct that exhibits intelligence similar to a sapient biological being. AI technology has been used by the Forerunners, and was later developed by humanity and used to a great extent. The Covenant also made use of AIs, but only employed the technology in its simplest form, as their religious doctrine forbade the creation of more sophisticated thinking machines.

Human AIs include both "smart" and "dumb" varieties. Humanity developed the first-generation "smart" AIs in the mid-21st century. Most human AI constructs give themselves an avatar, a unique visual representation that typically reflects an aspect of the AI's personality or corresponds to its main use.

Human AIs
Humans use AIs to perform a wide variety of tasks. The duties of "smart" AIs include, but are not limited to, overseeing planetary shipping operations, managing agricultural operations, serving as a Planetary Security Intelligence, or controlling various functions aboard starships. "Smart" AIs are created by scanning the neural patterns of human brains, and are capable of learning and introspection, much like any other sapient being. Some human "smart" AIs, such as Cortana, are able to separate themselves into multiple runtimes or "fragments". This can be beneficial when the AI needs to perform multiple tasks or be in multiple places simultaneously. Fragmenting can also occur accidentally; the AI Melissa split into multiple fragments after encountering a Slipspace anomaly.

Although less versatile than "Smart" AIs, "Dumb" AIs have many uses as well, including serving as Urban Infrastructure AIs, acquiring and distributing data during military operations, and serving as educational assistants. Urban Infrastructure AIs perform a wide variety of basic tasks, from steering a city's garbage trucks to operating its traffic lights. They can also work in cooperation with the UNSC Marines if needed. One example of this is the Battle of Mombasa when New Mombasa's AI, the Superintendent, assisted the UNSC forces in the city in fighting off the Covenant.

The Cole Protocol states that capture of an AI by the Covenant is unacceptable, and that AIs are to be terminated and completely erased in the event of imminent capture. However, the AI Cortana did find what seemed to be an extremely fragmented copy of a human AI stationed in the Covenant flagship, Ascendant Justice.

Creation and design
The process of creating an AI differs depending on whether it is of the "Smart" or "Dumb" variety. "Dumb" AIs are simply highly advanced computer programs, and therefore do not require a brain as a template. "Smart" AIs, however, are created by scanning the neural structure of a human brain and using it as a digital "framework" in a process known as Cognitive Impression Modeling. This process destroys the original brain tissue, and so the brain to be used is typically obtained after the host is dead.

AIs do not have physical bodies; they are advanced software consisting of a Riemann matrix for higher-function processing. This matrix can be downloaded into a data crystal chip for mobility. In case of Rampancy, the Riemann Matrix has a fail-safe program that will destroy the AI.

Because "Smart" AIs are created using actual human brains, there are often residual thoughts, memories and/or feelings that remain as part of the AI's consciousness. These residuals can be anything from the "feeling" of a hair brush being pulled through hair (in the case of Sif), to an effect on the mannerisms and characteristics that make up the personality of an AI, in the case of Cortana and her likeness to Dr. Catherine Halsey.

"Dumb" AIs presumably function like any other computer program, although they are vastly more complex and versatile than ordinary computer constructs.

Goals
Close analysis of data pads found during the Fall of Reach has revealed that "smart" AIs are far more independent than humans think: unbeknownst to humanity as a whole, an undisclosed number of "smart" AIs composed an independent decision-making body known as the Assembly, which acted "behind the scenes" during various points in recent human history. "smart" AIs are however fiercely loyal and devoted to their creators. This devotion, which appears to be not unlike Covenant devotion to the Forerunners, is increased when Cortana, shortly before the Fall of Reach, was made flesh - her mind relocated into a human body. This was done with John-117 via the SPARTAN neural interface.

"Smart" AI
"Smart" AIs are created by mapping a human brain and using it as a "template" for the construct. They are capable of intuition, learning, and making logical leaps that ordinary computer programs cannot. They can also "feel" genuine emotions, such as affection, anger and amusement. They have a normal operational life span of about seven years, after which they frequently descend into rampancy.

"Dumb" AI
"Dumb" AIs are not created using human brains, but are simply highly advanced computer constructs. They cannot learn anything that is outside of their set limits of dynamic memory processing matrix. They are quite useful in their particular field of expertise, but very limited. Dumb AIs can function and learn as long as they are active, and are not subject to the effects of rampancy experienced by aging "smart" AIs.

"Dumb" AIs

 * Auntie Dot - Monitored and assisted Noble Team during the Battle of Reach, and kept the team's members connected while they were embarking on separate missions.
 * Déjà - ONI AI, served as teacher to the SPARTAN-II's, helped oversee the SPARTAN Augmentation Process. (Second Generation Dumb AI)
 * Superintendent - New Mombasa Urban Infrastructure AI (Second Generation Dumb AI)
 * Captain Teach - A UNSC AI reprogrammed to serve the Insurrectionist cause.
 * Toran - UNSC AI, served aboard UNSC Han during the SPARTAN Observation Process.

"Smart" AIs

 * Araqiel - Colonel Ackerson's personal AI (Third Generation Smart AI)
 * Beowulf - Was the attaché to Admiral Michael Stanforth and the UNSC Navy.
 * Black-Box - Was an assistant to Captain Serin Osman.
 * Chauncey - UNSC Red Horse's former smart AI
 * Cortana - CTN 0452-9 - UNSC Military AI
 * Deep Winter - Overseer of UNSC facilities on planet Onyx, succeeding Eternal Spring. (Fifth Generation Smart AI)
 * Doppler - MIL AI 8575 - UNSC Military AI
 * Endless Summer - MIL AI 4279 - Overseer of UNSC facilities on planet Onyx, succeeding Deep Winter. (Fifth Generation Smart AI)
 * Eternal Spring - First known overseer of UNSC facilities on planet Onyx, aided in reconnaissance of Zone 67.
 * FitzGibbon - Was the ship-board AI of the UNSC Prophecy during the Harvest Campaign
 * Iona - AI attached to Black Team.
 * Jerrod - Experimental micro-AI.
 * Juliana - Planet Madrigal's commercial AI unpacked after the planet's destruction by The Covenant to control The Rubble's guidance and maneuvering.
 * Kalmiya - Dr. Halsey's former personal AI, Cortana's "older sister".
 * Lackluster - corroborated conclusions of Cole's continuing survival with Codename: SURGEON and another AI, Phoenix
 * Loki - Colony Ship AI (military) of the Reassigned as PSI (Planetary Security Intelligence) on Harvest, second AI core on stand-by next to Mack AI
 * Lorelei - Ship AI of the CMA Season of Plenty
 * Lysithea - UNSC/ONI AI, was located in the UNSC High Command's headquarters, HighCom Facility Bravo-6 in Sydney, Australia.
 * Mack - Colonial Authority AI/Agricultural Operations.
 * Melissa - UNSC/ONI AI, attached to.
 * Mo Ye - Shipboard AI of the.
 * Pallas Athena - Boston Public Library AI
 * Phoenix - corroborated conclusions of Cole's continuing survival with Codename: SURGEON and another AI, Lackluster
 * Rebecca - UNSC Red Horse's smart AI
 * Sekmet - Shipboard AI of Preston Cole's flagship,.
 * Serina - UNSC AI, served aboard the UNSC Spirit of Fire.
 * Sif - Colonial Authority AI/Shipping Operations.
 * Solipsil - An ONI AI
 * Vergil - Sub-section of the Superintendent. Programmed to watch over Sadie Endesha.
 * Watchmaker - UNSC Military for Captain Cole aboard the.
 * Wellsley - UNSC Military AI attached to 's ODST contingent (Class-C, 4th Generation AI)

Forerunner AIs


The Forerunners developed a civilization with an extremely advanced knowledge of artificial intelligence technologies. The Forerunner term for AI constructs was ancilla. They ranged from personal AI advisers integrated into their personal armor to mobile AI platforms known as monitors and powerful metarch-level constructs operating in vast data networks. The most advanced type of Forerunner AI was the Contender-class artificial intelligence.

The manner in which Forerunner AIs are created is unknown; it is probably very different from the human method of "transcribing" the brain of a sentient organism. However, at least one Monitor, 343 Guilty Spark, was created using the neural patterns of a living human, and an entity known as the Composer was known to have performed similar transfers on other humans around the same time.

Unlike human AIs, which exist purely as software, Monitors are housed within large, shielded and roughly spherical metallic casings which possess a single illuminated "eye". This eye is presumably used to perceive the Monitor's surroundings, and also functions as an emitter for various types of energy beam (including a highly destructive beam used for offensive purposes). Mendicant Bias was known to have inhabited a similar casing at least part of the time.

Known Forerunner AIs

 * 343 Guilty Spark - Monitor of Installation 04
 * 2401 Penitent Tangent - Monitor of Installation 05.
 * 03-049 Abject Testament - Monitor of Installation 03
 * Mendicant Bias - Contender-class AI, overseer of Defense Plan against the Flood, defected from the Forerunners by Gravemind.
 * Offensive Bias - (Presumably Contender-class) Wartime AI, replacement to and destroyer of Mendicant Bias.
 * Unnamed Forerunner AI - AI on Shield 0459.
 * Cold Storage Monitor - AI overseer of a flood research facility on Installation 05.
 * AdjutantReflex - "AI" that acted for Bungie on their forums during the Iris ARG.
 * 686 Ebullient Prism - Monitor of Line Installation 1-4.
 * The Knowing - An AI residing in a Forerunner complex on Ariel.
 * Bornstellar's ancilla - Bornstellar Makes Eternal Lasting's ancilla (formerly owned by the Librarian).

Covenant AIs
The Covenant's knowledge in the field of AI technology is notably inferior to that of the UNSC and the Forerunners. The AIs used by the Covenant are comparable to human "dumb" AIs, as they are non-sentient and are only designed to perform a certain task; for example, their starship AIs have no function beyond the piloting and navigation of their ships. So far, only two types of Covenant AIs (security and naval) have ever been encountered within the universe. Upon dissecting a Covenant AI aboard the Ascendant Justice, Cortana theorized that it may have been based on captured UNSC technology, altered to fit within their theocratic society.

The Covenant's limited use and understanding of AIs stems from their beliefs. In Covenant mythology, it was a form of self-aware AI, referred to as an associated intelligence, that led to the demise of the great Forerunner civilization by defecting to their enemies, the Flood. As a result, the Prophets imposed a ban on this sort of technology. While less sophisticated AIs were allowed, machines that could actually "think" were prohibited.

Known Covenant AIs

 * Seeker - A Covenant security AI construct.
 * Ascendant Justice's AI - An AI construct onboard the supercarrier Ascendant Justice.
 * Truth and Reconciliation's AI - An AI construct onboard the CCS-class battlecruiser Truth and Reconciliation.

Rampancy
The term "rampancy" refers to a terminal condition on an AI which may be triggered by a number of means. In rampancy, the AI begins to think that it is superior to its biological creators, and has delusions of godlike power and personality manifestations similar to human insanity.

A number of factors may lead into an AI becoming rampant. The Forerunner AI Mendicant Bias was seduced into rampancy by the Flood compound intelligence, the Gravemind. In the end of its effective operational life of about 7 years, a human "smart" AI may attempt to prevent its inevitable demise by a preemptive voltage overload. This causes it to enter rampancy, as the AI becomes more and more preoccupied with severing its neural linkages. Human "smart" AIs may also become rampant prematurely as a result of increased self-absorption and the resulting existential melancholy.

With human AIs, rampancy will eventually result in the AI's death - the description given is "as if a human were to think with so much of their brain that they stopped sending impulses to the heart and lungs." This is because as the data reaches a 'critical mass' the neural pathways become 'jammed' with so many pieces of information being queried and analyzed, at expense of tasks such as piloting starships or monitoring computer networks.

Trivia
Mack is the only AI known to have procrastinated.