Bounded simulation: no real targets, coordinates, casualty models, weapon-performance parameters, executable payloads, or operational attack instructions.
Data → inference → attention → consequence · New in v1.13
Predictive Enforcement Program Explorer
Compare how public systems forecast places, classify people, resolve identities, allocate screening, maintain watchlists, or structure behavioral threat assessment—and inspect the human review, notice, retention, evaluation, equality, and unknowns around each program.
Predictive enforcement is a decision architecture that connects historical or administrative data to identity resolution, inference or prioritization, human interpretation, state attention, retention, and review or redress.
Are place forecasts, person scores, watchlists, and threat assessments the same?
No. They ask different questions, use different evidence, affect different decisions, and create different error, rights, notice, and evaluation problems.
When a forecast or designation changes where officials look or whom they scrutinize, the resulting contacts and detections can become future data that appears to confirm the original priority.
Pre-crime is a decision architecture—not one algorithm.
The consequential chain starts before a score and continues after it. Collection, identity resolution, inference, interpretation, intervention, retention, and redress can be owned by different institutions and can fail in different ways.
01Collect
02Resolve identity
03Infer or prioritize
04Human interpretation
05Intervene
06Retain
07Review or redress
Place-based
Where and when might a recorded event concentrate?
A map can redirect patrol without naming an offender. It can still reproduce reporting, deployment, and data-quality patterns.
Person-based
Which identifiable person receives a prospective label?
A score or tier can persist across encounters and affect surveillance, visits, diversion, screening, or partner treatment.
Identity and status
Does this record match a known identity or list?
Identity resolution is not itself future-conduct prediction, but a match can trigger consequential downstream rules.
Professional assessment
What does a contextual team conclude—and how is the concern managed?
Structured behavioral threat assessment is not automatically an actuarial forecast, but it can drift toward pre-crime when vague indicators become durable suspicion.
Comparative program explorer
Eight programs, eight different decision architectures.
Use the filters to compare function, status, authority, input, output, human review, notice, retention, evaluation, equality findings, public unknowns, and what the record does not establish.
8 of 8 program records shown
Comparison selection: 0 / 4
Netherlands
Crime Anticipation System
CAS
DiscontinuedOctober 2015 through December 2025
Place-based forecast
Responsible authorityNational Police of the Netherlands
OutputA daily indication of cells with elevated expected crime for a selected category.
Affected decisionLocal police teams could use the map as one information source for where and when to be more active.
Source classOfficial algorithm register and police disclosure
Open the complete program record
Inputs
Historical police incident records over a twelve-week period
Crime-type counts by 125m × 125m cell
Counts of known suspects for the selected crime type living near a cell
Method
A national gridded place-risk model. The public register describes the variables and place-based purpose but does not make the complete implementation or performance record public.
Human review
Police teams and information specialists interpreted the output; the register does not describe an automated coercive action against a person.
Notice and redress
The registered output concerned neighborhoods, not a named-person decision. Public material reviewed here does not establish a resident-specific notice or correction process.
Retention and removal
The algorithm register records phase-out and an end date; detailed forecast-retention arrangements remain outside the bounded public record used here.
Evaluation
The register states that CAS was regularly evaluated and was phased out after an evaluation session. It does not establish a distinct crime-reduction effect.
Equality and distribution
The system was described as depersonalized and place-based, but incident data and deployment choices can still encode reporting and enforcement patterns.
Status boundary
The Dutch government algorithm register records CAS as out of use, with an end date in December 2025.
Public unknowns
Complete model coefficients
Cell calibration
Patrol response dosage
Counterfactual effect on crime
Downstream retention after phase-out
United States · federal support to multidisciplinary teams
Federal behavioral threat assessment and management
FBI BTAC · FBI TATM Initiative · U.S. Secret Service NTAC
OperationalBTAC established in 2010; NTAC established in 1998; active
Responsible authorityFBI Behavioral Threat Assessment Center and U.S. Secret Service National Threat Assessment Center
OutputA case formulation, investigative priorities, management options, reassessment plan, or recommendation to close or continue a case.
Affected decisionSafeguarding, support, lawful restrictions, investigation, management, referral, monitoring, or case retirement.
Source classOfficial federal program and guidance material
Open the complete program record
Inputs
Articulable safety concern
Behavior and communications in context
Investigative records
Access to means
Stressors and protective factors
Multidisciplinary collateral information
Method
Structured, case-specific professional judgment and management rather than a population-wide actuarial probability of attack.
Human review
Multidisciplinary teams of law enforcement, analysts, mental-health practitioners, educators, or community partners gather and weigh evidence.
Notice and redress
Processes vary by local institution and intervention. The federal public guidance does not establish one national notice or appeal mechanism for every referred case.
Retention and removal
Good-practice guidance emphasizes reassessment and management; actual retention and closure rules vary across participating agencies and institutions.
Evaluation
Public research can identify recurring behaviors and support structured inquiry, but extremely rare attacks make individual probability prediction and causal prevention claims difficult to validate.
Equality and distribution
The main risk is drift from behavior-based, contextual inquiry toward profiling based on ideology, disability, grievance, protected speech, associations, or vague indicators.
Status boundary
Current FBI and Secret Service materials describe ongoing operational support, research, training, consultation, and multidisciplinary prevention guidance.
Public unknowns
Local implementation consistency
Case-level intervention outcomes
Retention across all teams
False-positive denominators
Use of undisclosed analytic software
United Kingdom · London
Gangs Violence Matrix and Violence Harm Assessment
GVM · VHA
Replaced or restructuredGVM operated from 2012 until February 13, 2024; VHA has operated since 2024 and remains in use
Watchlisting or prioritizationConventional intelligence analysis
Responsible authorityMetropolitan Police Service
OutputA named-person intelligence list and harm or priority assessment.
Affected decisionThe list can direct finite police resources and may be the reason policing or safeguarding action is considered, although inclusion is not itself a mandatory action.
Source classOfficial police, regulator, and current transparency records
Open the complete program record
Inputs
Violence and weapons crime reports
Police intelligence
Victimization information in the former GVM
Cambridge Harm Index and ONS scoring in the VHA
Method
The GVM used scores and red/amber/green bands associated with gang violence. The VHA uses explicit inclusion criteria and harm scoring across designated violence categories.
Human review
The VHA has central governance, periodic refresh, an SOP, published impact assessments, and human intelligence processes.
Notice and redress
The Met publishes information about access and removal requests for the VHA. The former Matrix was criticized for weak notice, accuracy, retention, and sharing controls.
Retention and removal
The VHA uses published inclusion and refresh rules; the page reports people entering and leaving assessment. The historical Matrix no longer exists.
Evaluation
The ICO identified serious data-protection problems in the former Matrix. MOPAC oversight and periodic publication apply to the VHA, but causal effectiveness remains a separate question.
Equality and distribution
Disproportionate representation was central to criticism of the GVM. The Met publishes quarterly VHA demographic data; as of July 3, 2026, 1,632 people met the criteria and 44.91% were self-recorded as Black, Black British, Caribbean, or African.
Status boundary
The GVM was decommissioned and the Met now uses the VHA. The current public VHA page, SOP, and quarterly figures remain available.
Public unknowns
Causal crime-reduction effect
Complete use by every local unit
How all intelligence disputes are resolved
Individual downstream consequences in each case
United Kingdom · County Durham and Darlington
Harm Assessment Risk Tool
HART
Current status unknownDeveloped from 2012; documented live use from 2016 through at least 2021
Recidivism or custody riskPerson-based prediction
Responsible authorityDurham Constabulary
OutputA traffic-light risk category presented to a custody officer.
Affected decisionThe category informed officer judgment and eligibility screening for the Checkpoint deferred-prosecution program; moderate-risk cases were the relevant cohort.
Source classUniversity research and UK government-commissioned review
Open the complete program record
Inputs
Custody and offending history
Age and gender
Prior violent and non-violent offending variables
Two postcode-derived variables in the published model
Method
A supervised random-forest model described in public research as using hundreds of decision trees to classify two-year reoffending risk as low, moderate, or high.
Human review
The tool was advisory. A custody officer retained discretion and was expected to consider other available information.
Notice and redress
A person could be informed about Checkpoint eligibility, but public material did not identify a dedicated mechanism to challenge the model category itself.
Retention and removal
The reviewed public sources describe periodic model refresh and police-held data but do not establish a current public retention and deletion schedule for HART outputs.
Evaluation
Published validation examined classification accuracy and intentionally weighted “cautious” versus “dangerous” errors. That is not the same as proving that use of HART improved long-term justice outcomes.
Equality and distribution
Published debate focused on age, gender, postcode-derived variables, unequal error costs, and whether advisory use was meaningfully contestable.
Status boundary
Public evidence reviewed for this release establishes implementation and use but does not reliably establish whether HART remained operational in August 2026.
Public unknowns
Current operational status
Current model version and features
Override rate
Subgroup calibration
Output retention and correction
Germany · Bavaria
PRECOBS
Pre Crime Observation System
Current status unknownPilot from 2014; official Bavarian records confirm continuing use in Nuremberg in 2019
Place-based forecast
Responsible authorityBavarian Police; historical deployments in Munich and Nuremberg
OutputA bounded place-and-time warning for analyst review.
Affected decisionWhether police analysts recommend additional preventive attention or patrol in the forecast area.
Source classOfficial police description with current-status gap
Open the complete program record
Inputs
Recent recorded burglary incidents
Modus operandi and case characteristics
Spatial and temporal proximity
Trigger and anti-trigger rules
Method
Near-repeat pattern analysis over recent crime records. The reviewed public material describes rule- and pattern-based forecasting rather than person scoring.
Human review
Analysts review candidate warnings before operational use.
Notice and redress
The forecast concerns an area rather than a named person. Public material reviewed here does not establish individual notice or a route-specific challenge process.
Retention and removal
Not sufficiently established in the reviewed official records.
Evaluation
Official and promotional sources describe use and claimed utility; independent evidence does not establish a distinct causal crime-reduction effect attributable to PRECOBS alone.
Equality and distribution
The released method is place-based and does not directly score named people, but deployment and recorded-crime data can still distribute police attention unevenly.
Status boundary
Public official evidence reviewed for this release confirms historical operational use but does not establish the current 2026 deployment footprint.
Public unknowns
Current Bavarian deployment scope
Complete alert thresholds
Forecast retention
Patrol dosage
Independent incremental-effect evidence
United States · aviation security
Secure Flight
TSA Secure Flight Program
OperationalOperational rollout from 2009; active
Traveler screening allocationIdentity resolutionWatchlisting or prioritization
OutputA boarding-pass or checkpoint-screening instruction such as cleared, enhanced screening, or no-board status.
Affected decisionAirline boarding and TSA checkpoint treatment before travel.
Source classOfficial DHS and TSA program documentation
Open the complete program record
Inputs
Passenger name
Date of birth
Sex
Itinerary and carrier data
Terrorism screening and other authorized lists or eligibility populations
Method
Identity matching and screening allocation. Secure Flight is not accurately described as a single future-crime prediction model.
Human review
Potential matches and exceptions can involve TSA and Threat Screening Center personnel; downstream action follows agency authority.
Notice and redress
Travelers can use DHS TRIP for screening and watchlist-related complaints. The public process does not reveal every underlying rule or record.
Retention and removal
DHS privacy documents describe system records and protections; list modification and removal are owned by relevant list authorities rather than Secure Flight alone.
Evaluation
Public materials establish workflow and privacy controls. They do not publish a complete precision, recall, subgroup-error, or counterfactual security-effect evaluation.
Equality and distribution
Public demographic error and disparate-impact metrics are limited. Identity matching can affect people whose names or identifiers resemble listed records.
Status boundary
Current TSA and DHS privacy materials continue to describe Secure Flight as an active passenger prescreening program.
Public unknowns
Complete matching thresholds
All list and rule inputs
Aggregate false-match rates
Subgroup performance
Every retention period
United States · Chicago, Illinois
Strategic Subject List and Crime and Victimization Risk Model
SSL · CVRM · Party to Violence models · Heat List
Discontinued2012 through November 1, 2019
Person-based predictionWatchlisting or prioritization
Responsible authorityChicago Police Department, with model development by Illinois Institute of Technology
OutputA person-linked score or tier made available inside CPD systems and dashboards.
Affected decisionThe output could inform referrals, prioritization, enforcement attention, mapping, and related police or prosecutorial programs.
Source classMunicipal inspector-general review
Open the complete program record
Inputs
Prior shooting victimization
Age at latest arrest
Aggravated-battery or assault victimization
Recent police-recorded activity
Weapons and violent incidents
Some versions included narcotics arrests or gang affiliation
Method
Six successive statistical models estimated future “party to violence” involvement over an eighteen-month horizon. Earlier SSL versions produced scores; CVRM produced risk tiers.
Human review
Operational use occurred through police personnel and programs; the score did not itself constitute a warrant, charge, or adjudication.
Notice and redress
Some people received Custom Notifications, but the public record did not establish a general score-notice, explanation, or direct appeal process.
Retention and removal
The program was decommissioned; OIG identified governance and data-quality concerns and recommended stronger retention, correction, and removal controls for any future model.
Evaluation
OIG reviewed RAND evaluations and found major weaknesses in purpose, documentation, data quality, operational guidance, and evaluation. The public record did not demonstrate reduced shooting or homicide risk from the model.
Equality and distribution
Race was not a direct model variable in the reviewed versions, but arrest, victimization, gang, and policing records can carry structural disparities and proxies.
Status boundary
Chicago’s Office of Inspector General records that CPD decommissioned the Party to Violence risk-model program on November 1, 2019.
Public unknowns
Complete historical model code
All score uses across units and partners
Complete deletion outcome
Individual override frequency
United States · federal interagency system
Terrorist Screening Dataset and watchlisting lifecycle
TSDS · terrorism watchlist · former TSDB
OperationalConsolidated federal watchlisting since 2003; active
Watchlisting or prioritizationIdentity resolutionConventional intelligence analysis
Responsible authorityFBI Threat Screening Center with nominations and review distributed across agencies
OutputAn accepted or rejected identity record and any eligible screening designations distributed to authorized systems.
Affected decisionDownstream agencies independently apply their own statutes and mission authorities, potentially affecting travel, borders, visas, encounters, investigations, or benefits.
Source classOfficial FBI transparency and independent federal oversight
Open the complete program record
Inputs
Identity attributes and aliases
Biometrics
Derogatory and intelligence information
Nominations from authorized agencies
Encounter and correction information
Method
A federated nomination, sufficiency, identity-resolution, acceptance, designation, dissemination, encounter, modification, review, and removal lifecycle—not one self-executing list or one prediction model.
Human review
Nominating agencies, NCTC or FBI components, TSC analysts, and downstream agencies perform distinct review and action functions.
Notice and redress
Direct notice is limited. DHS TRIP handles many travel complaints; review and disclosure vary by consequence, citizenship, and legal process.
Retention and removal
The PCLOB report describes review, modification, redress, and annual removals while recommending more systematic re-review and accuracy controls.
Evaluation
PCLOB’s 2025 report describes the enterprise, approximately 1.1 million persons as of August 2024, and recommendations concerning accuracy, review, and redress. These counts do not provide a single false-positive rate.
Equality and distribution
The overwhelming majority of listed people were foreign nationals; under 6,000 were U.S. persons as of August 2024. Rights and remedies vary substantially by status and consequence.
Status boundary
The FBI renamed the Terrorist Screening Center to the Threat Screening Center in March 2025. The terrorism component remains a distinct watchlisting function within the broader mission.
Public unknowns
Substantial portions of nomination guidance
Exact subset criteria
Matching thresholds
Source-weighting rules
Complete category counts
Comprehensive error denominators
No program matches the current filters. Reset the explorer or broaden the search.
Descriptive comparison
Compare up to four decision architectures.
No overall score, vendor ranking, legality rating, effectiveness grade, or “most advanced” label is calculated.
Select two to four program records to compare their functions, consequences, human review, redress, evaluation, equality findings, and unknowns.
Synthetic feedback-loop laboratory
The feedback loop is part of the system.
Change the type of designation and level of added attention. The exercise shows how deployment can influence the records available to the next analysis without claiming that every contact, report, or forecast is invalid.
01
Historical or administrative data
Recorded incidents, contacts, intelligence, or case events form the available baseline.
02
Inference or priority
A map, score, tier, match, or professional formulation redirects attention.
03
Deployment or scrutiny
Patrol, screening, visits, review, investigation, support, or another response follows.
04
Recorded outcome
Contacts, detections, arrests, referrals, non-events, or corrections become records.
05
Future data
The next analysis may learn from records partly produced by the previous intervention.
Initial record level36
Added observation exposure+18
Records entering next cycle54
What changedAttention and observation—not proven underlying prevalence
A fictional forecast directs more observation to one grid cell. More patrol can reveal more events or officer-initiated records even if underlying event prevalence is unchanged.
The demonstration does not claim that all patrol creates bias or that reported incidents are invalid. It shows why deployment exposure must be measured separately from underlying event prevalence.
Predictive Enforcement Program Explorer ready.
Publication boundary
Program status, algorithm type, and consequence remain separate facts.
A system may be sophisticated but low-consequence, simple but coercive, discontinued but functionally replaced, or operational without public evidence of effectiveness. A dashboard, list, match, risk tier, and multidisciplinary case formulation must not be treated as interchangeable.
Operational is not automated determination.
Operational means an output was available for live use. It does not mean a computer made the final legally consequential decision.
Human review is not automatically meaningful.
Review must be timely, informed, empowered to reject, and supported by access to underlying evidence and uncertainty.
A reachable source is not proof of a working capability.
Official and vendor records establish bounded facts about purpose, procurement, status, or claims—not independent effectiveness.
Discontinuation may not end the function.
Names, vendors, models, and administrative owners can change while prioritization, data fusion, patrol allocation, or watchlisting functions continue elsewhere.