ML poverty maps select 1,163 wards for Nigeria's COVID-19 cash

ML poverty maps chose 1,163 poorest urban wards for Nigeria's COVID-19 cash register; 49,000 beneficiary households as of 15 October 2021

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AI system

System

Ward-level poverty maps from supervised machine learning (deep learning) on satellite imagery, used for geographic targeting in the Rapid Response Register

Model

Not assessed

Release

Not assessed

Application developer

Joshua Blumenstock (UC Berkeley) and Isabella Smythe (Columbia University), using wealth estimates by Chi et al. (2021), with World Bank economists Jonathan Lain and Tara Vishwanath, for the Government of Nigeria

Role

Not assessed

Configuration

Not assessed

Inputs and outputs

Not assessed

Autonomy

Not assessed

Workflow

Deep-learning poverty map trained on geo-located household surveys. Government decision to adopt the ward ranking for eligibility. SMS blasts and USSD self-registration. In-person verification, de-duplication and payment onboarding.

Human oversight

Not assessed

Relation to AI

Decisive at the geographic stage: the ML poverty map alone chose which 1,163 wards were eligible. Individual inclusion depended on USSD self-registration and in-person verification, not AI. Payment and registration counts come from World Bank operational documents, not from the map developers. The PNAS paper and World Bank blog are co-authored by the developers.

AI contribution

Decisive at the geographic stage: the ML poverty map alone chose which 1,163 wards were eligible. Individual inclusion depended on USSD self-registration and in-person verification, not AI. Payment and registration counts come from World Bank operational documents, not from the map developers. The PNAS paper and World Bank blog are co-authored by the developers.

Benefits

Outcome identifiers

Not assessed

Benefit

49,000 beneficiary households of the government's COVID-CT as of 15 October 2021

Category

Increased Scalability

Status

Not assessed

Beneficiary groups

People. Organizations. Society.

Beneficiaries

Not assessed

Reach

Not assessed

Distribution and access

Not assessed

Duration

Not assessed

Expected?

Yes

Costs and harms

Not assessed

Measurement

Studies

Not assessed

Study design

Not assessed

Measurement

Not assessed

Setting and sample

Not assessed

Measures

49,000 beneficiary households of the government's COVID-CT as of 15 October 2021

Comparison

survey-based poverty map benchmark (DHS/NLSS data)

Results

Reference: 0.79 precision at the ward level (survey benchmark). Result: 0.92 precision at the ward level (ML-based maps).

Additional value from AI

Not assessed

Limitations

Not assessed

Denominators

Not assessed

Materials for replication

Not assessed

Money

Kind of value

Not assessed

Amount

Not assessed

Currency and prices

Not assessed

Period and unit

Not assessed

Realization

Not assessed

Recipients and payers

Not assessed

Gross or net

Not assessed

Included costs

Not assessed

Comparison

Not assessed

Method

Not assessed

Return and payback

Not assessed

People and places

Participants

Developer: Joshua Blumenstock (UC Berkeley) and Isabella Smythe (Columbia University), using wealth estimates by Chi et al. (2021), with World Bank economists Jonathan Lain and Tara Vishwanath, for the Government of Nigeria. Operator: National Social Safety Nets Coordinating Office (NASSCO), Federal Government of Nigeria.

Jurisdictions

Benefit: Urban wards across Nigeria. Operator: Nigeria.

Ownership and control

Not assessed

Dependencies

Not assessed

Cross-border connections

Not assessed

Geopolitical implications

Not assessed

Follow-up

Conditions for replication

Ground-truth survey data for training labels. Ward boundaries compatible with map resolution. Mobile-phone access in target wards. Government funding for transfers and identity verification capacity.

Replication attempts

1 follow-up entries. Benefit recurred: 1.

Later findings

29 January 2025. The World Bank's 2021 scale-up project adopted the same machine-learning poverty maps to choose expansion wards for the RRR, and its January 2025 status report counts over 5 million households supported by the direct benefit transfer program after delays and a switch to biometric-verified payments, without breaking out the RRR-targeted share.

Availability

Not assessed

Institutional decision

Not assessed

Grounds

Not assessed

Action and result

Not assessed

Success criterion

Not assessed

Evidence

Source numbers

AIBD-0094-source-0001–0005

Citations

Numbered references below.

Language

Not assessed

Source relationships

Developer, Independent

Original evidence

Not assessed

Access and versions

Not assessed

Supported findings

Not assessed

Evidence strength

Not assessed

Missing evidence

Not assessed

Grades

Assessed benefits

People. Organizations. Society.

Depth

People: 2. Organizations: 2. Society: 3.

Reasons

People: Households in selected wards were beneficiaries of the government's COVID-CT. The PNAS authors say disbursement began mid-January 2021. The World Bank ISR records 49,000 beneficiary households as of 15 October 2021 without saying how many had been paid. Organizations: NASSCO stood up an urban registry within months through USSD self-registration guided by the ML poverty map. Over 1.75 million registrations succeeded (PAD, Nov 2021). Society: Material to many: 1,163 wards with over 20 million residents made eligible. PNAS simulation finds the ML maps would cut inclusion errors by 61.7% versus the survey-based benchmark.

Observed or intended

Not assessed

Rubric

Not assessed

Assessor and date

Not assessed

Alternative assessments

Not assessed

Fill

Independently studied

Entry details

Kind

Not assessed

Field

Social protection and cash transfers. Government social assistance.

Purpose

Geographically target a COVID-19 urban cash transfer to the poorest wards where no social registry existed.

Dates

Date basis unassessed: 2021 (precision unassessed). Updated: 21 October 2026.

Stage

Not assessed

Version

SHA-256: 2c38cee688ad…

References

Other identifiers

AI Incident Database: 546.

Category mappings

Not assessed

Brief

Not assessed

Revisions

7 revisions. Latest: 21 October 2026.

Sources

  1. Peer-reviewed study Developer

    Smythe, I. S., Blumenstock, J. E. (2022). Geographic microtargeting of social assistance with high-resolution poverty maps. PNAS 119(32).

  2. Report Developer

    World Bank (2021). Project Appraisal Document: Nigeria National Social Safety Net Program - Scale Up (P176935).

  3. Report Developer

    World Bank (2025). Implementation Status and Results Report, National Social Safety Net Program-Scale Up (P176935), Sequence 6.

  4. Report Independent author

    Human Rights Watch (2021). Between Hunger and the Virus: The Impact of the Covid-19 Pandemic on People Living in Poverty in Lagos, Nigeria.

  5. Press release Developer

    Blumenstock, J., Lain, J., Smythe, I., Vishwanath, T. (2021). Using Big Data and machine learning to locate the poor in Nigeria. World Bank Data Blog.