Evidence map›Paper›PMID 40596680›Full record

ArticleScientific reports2025

When the crowd gets it wrong - the limits of collective wisdom in machine learning.

Kamil P Orzechowski, Julian Sienkiewicz, Agata Fronczak, Piotr Fronczak

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Kamil P OrzechowskiWarsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662, Warsaw, Poland. kamil.orzechowski2.dokt@pw.edu.pl.
Julian SienkiewiczWarsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662, Warsaw, Poland.
Agata FronczakWarsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662, Warsaw, Poland.
Piotr FronczakWarsaw University of Technology, Faculty of Physics, ul. Koszykowa 75, 00-662, Warsaw, Poland.

Funding

HORIZON EUROPE Framework Programme 101086321
6 · The paper itself

Abstract

This study examines collective decision-making dynamics using a machine learning framework, drawing parallels between a previously established synthetic population model and a newly introduced ensemble machine learning counterpart. Grounded in the "wisdom of crowds" principle, the research explores scenarios where the accuracy of group decisions may unexpectedly decrease as group size increases, particularly when individuals share highly correlated information. By replicating these conditions with machine learning ensembles, such as decision trees and support vector machines, the study identifies circumstances where collective accuracy declines, challenging the assumption that larger groups inherently make better decisions. The findings reveal the limitations of collective models in machine learning and provide valuable insights for data-scarce environments.

Identifiers

PMID40596680
PMCPMC12216932

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.