Evidence map›Paper›PMID 34272382›Full record

ArticleNature communications2021

Empirical assessment and comparison of neuro-evolutionary methods for the automatic off-line design of robot swarms.

Ken Hasselmann, Antoine Ligot, Julian Ruddick, Mauro Birattari

Abstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Social learning in swarm robotics.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  6. Review
  7. Article
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.

Ken Hasselmann *IRIDIA, Université libre de Bruxelles, Brussels, Belgium.ORCID 0000-0002-8196-9889
Antoine Ligot *IRIDIA, Université libre de Bruxelles, Brussels, Belgium.ORCID 0000-0001-7388-2866
Julian RuddickIRIDIA, Université libre de Bruxelles, Brussels, Belgium.ORCID 0000-0002-9063-6939
Mauro BirattariIRIDIA, Université libre de Bruxelles, Brussels, Belgium. mbiro@ulb.ac.be.ORCID 0000-0003-3309-2194

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuro-evolution is an appealing approach to generating collective behaviors for robot swarms. In its typical application, known as off-line automatic design, the neural networks controlling the robots are optimized in simulation. It is understood that the so-called reality gap, the unavoidable differences between simulation and reality, typically causes neural network to be less effective on real robots than what is predicted by simulation. In this paper, we present an empirical study on the extent to which the reality gap impacts the most popular and advanced neuro-evolutionary methods for the off-line design of robot swarms. The results show that the neural networks produced by the methods under analysis performed well in simulation, but not in real-robot experiments. Further, the ranking that could be observed in simulation between the methods eventually disappeared. We find compelling evidence that real-robot experiments are needed to reliably assess the performance of neuro-evolutionary methods and that the robustness to the reality gap is the main issue to be addressed to advance the application of neuro-evolution to robot swarms.

Identifiers

PMID34272382
PMCPMC8285396

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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.