OSCR

Single-cell epigenomics uncovers heterochromatin instability and transcription factor dysfunction during mouse brain aging.

Code ↔ Paper

14 matches between paragraphs of the paper and lines of its authors' code, computed by the harvester (lexical-v1). Click a colored paragraph or line to see its counterpart.

The 14 matches · 4 of them tie a paragraph to a whole file, not to given lines: weak matches, whose lines are not tinted
  1. [1] § STAR★METHODS › METHOD DETAILS › Label transfer between snRNA and MERFISH for annotation ↔ MERFISH/transfer_labels_MERFISH.R, the whole file · a weak match · score 0.93 · FindTransferAnchors, TransferData, prediction.score.max, FindClusters, annotated cluster, majority
  2. [2] § STAR★METHODS › METHOD DETAILS › snRNA-seq data processing ↔ RNA/process_RNA.R, lines 44–90 · score 0.91 · high doublet scores, low UMI, SCTransform, low quality, manual filtering, UMAP
  3. [3] § RESULTS › Loss of progenitor populations in aging brains ↔ scratch_scripts/PlotFigure1_RNA.r, lines 1–58 · score 0.79 · caudate putamen, anterior hippocampus, posterior hippocampus, nucleus accumbens, CP, NAC
  4. [4] § RESULTS › Loss of progenitor populations in aging brains ↔ scratch_scripts/plot_scratch.r, lines 1–57 · score 0.78 · caudate putamen, anterior hippocampus, posterior hippocampus, nucleus accumbens, CP, NAC
  5. [5] § STAR★METHODS › METHOD DETAILS › Label transfer between snRNA and MERFISH for annotation ↔ scratch_scripts/transfer_labels.r, lines 44–122 · score 0.75 · FindTransferAnchors, TransferData, CCA, subsampled, Seurat, matched
  6. [6] § STAR★METHODS › QUANTIFICATION AND STATISTICAL ANALYSIS › Quantifying transposable elements (TEs) accessibility and expression ↔ RNA/TE_analysis_RNA/DESeq2_differential_TEs.R, the whole file · a weak match · score 0.69 · TE subfamilies, transposable element, DESeq2, summing, matrix, age
  7. [7] § STAR★METHODS › METHOD DETAILS › snATAC-seq data processing ↔ scratch_scripts/process_F_M.py, lines 29–64 · score 0.62 · BX, tag, Scrublet, imported, bam, bin
  8. [8] § STAR★METHODS › METHOD DETAILS › snATAC-seq data processing ↔ scratch_scripts/process_combined-Copy1.py, lines 29–64 · score 0.62 · BX, tag, Scrublet, imported, bam, bin
  9. [9] § RESULTS › Heterochromatin destabilization, transposable element activation, and lncRNA dysregulation in aging brains ↔ scratch_scripts/Plot_DAR-Copy1.r, lines 486–525 · score 0.59 · lncRNAs, h3k9me3, chromosomal, overlap, TE, transcriptional
  10. [10] § STAR★METHODS › QUANTIFICATION AND STATISTICAL ANALYSIS › Quantifying transposable elements (TEs) accessibility and expression ↔ RNA/TE_analysis_RNA/DESeq2_differential_TEs.R, the whole file · a weak match · score 0.55 · DESeq2, SoloTE, TEs, transposable, summing, matrix
  11. [11] § RESULTS › Chromatin accessibility remodeling with aging ↔ scratch_scripts/plotchrom_plot_DEG.r, lines 867–929 · score 0.55 · gene families, log fold change, LogFC, protocadherin, adj
  12. [12] § STAR★METHODS › METHOD DETAILS › MERFISH gene panel design ↔ scratch_scripts/SoloTE_class_todo.r, lines 216–287 · score 0.51 · Gene selection, biological processes, cellular, enriched, age
  13. [13] § STAR★METHODS › METHOD DETAILS › MERFISH gene panel design ↔ scratch_scripts/SoloTE_locus-Copy1.r, lines 207–278 · score 0.51 · Gene selection, biological processes, cellular, enriched, age
  14. [14] § STAR★METHODS › METHOD DETAILS › MERFISH data preprocessing ↔ MERFISH/transfer_labels_MERFISH.R, the whole file · a weak match · score 0.51 · UMAP, transferred, subclass, MERFISH, neighbors, PCA

Paper

Loaded from Europe PMC by your browser, not stored by OSCR: doi.org · Europe PMC

The paper is loaded when this pane is shown.

The authors' code

R · 90 lines · 3.1 KB · no license · 2 matches

  1. # Load libraries
  2. library(Seurat)
  3. library(dplyr)
  4. # Step 0: Read in Seurat objects
  5. # Make sure to replace these paths with your actual saved RDS paths
  6. fem <- readRDS("../female_RNA/combined_seurat.RDS")
  7. mer <- readRDS("../MERFISH/merfish_seurat.RDS")
  8. # Step 1: Subsample RNA cells to a max of 2000 per annotated cluster
  9. max_cells_per_cluster <- 2000
  10. indices_to_keep <- integer(0)
  11. unique_clusters <- unique(fem$transfer_celltypes)
  12. for (cluster in unique_clusters) {
  13. cluster_indices <- which(fem$transfer_celltypes == cluster)
  14. if (length(cluster_indices) > max_cells_per_cluster) {
  15. max_c = max(max_cells_per_cluster, ceiling(length(cluster_indices)/10))
  16. cat(cluster, max_c, "\n")
  17. sampled_indices <- sample(cluster_indices, max_cells_per_cluster)
  18. indices_to_keep <- c(indices_to_keep, sampled_indices)
  19. } else {
  20. indices_to_keep <- c(indices_to_keep, cluster_indices)
  21. }
  22. }
  23. fem <- subset(fem, cells = colnames(fem)[indices_to_keep])
  24. # Step 2: Run label transfer using CCA
  25. anchors <- FindTransferAnchors(
  26. reference = fem,
  27. query = mer,
  28. dims = 1:45,
  29. reduction = "cca",
  30. features = rownames(mer),
  31. normalization.method = "SCT"
  32. )
  33. predictions <- TransferData(
  34. anchorset = anchors,
  35. refdata = fem$transfer_celltypes,
  36. dims = 1:45
  37. )
  38. mer <- AddMetaData(mer, metadata = predictions)
  39. # Step 3: Subcluster MERFISH data and assign predicted labels per subcluster
  40. allmeta <- list()
  41. for (cl in unique(mer$seurat_clusters)) {
  42. sub <- subset(mer, subset = seurat_clusters == cl)
  43. sub <- NormalizeData(sub)
  44. sub <- FindVariableFeatures(sub, nfeatures = 500)
  45. sub <- ScaleData(sub)
  46. sub <- RunPCA(sub, features = VariableFeatures(sub))
  47. sub <- FindNeighbors(sub, dims = 1:25)
  48. sub <- FindClusters(sub, resolution = 2)
  49. sub <- RunUMAP(sub, reduction = "X_pca", dims = 1:25)
  50. sub$sub_leiden <- paste(cl, sub$seurat_clusters)
  51. # Assign predicted ID based on majority vote in each subcluster
  52. metaf <- [email hidden]
  53. metaf <- metaf[!is.na(sub$predicted.id) & metaf$prediction.score.max > 0.85, ]
  54. predictions_table <- table(metaf$seurat_clusters, metaf$predicted.id)
  55. predictions_table <- predictions_table / rowSums(predictions_table)
  56. predictions_df <- as.data.frame(predictions_table)
  57. new_df <- predictions_df %>%
  58. group_by(Var1) %>%
  59. filter(Freq == max(Freq)) %>%
  60. select(Var1, Var2, Freq) %>%
  61. as.data.frame()
  62. mat <- match(sub$seurat_clusters, new_df$Var1)
  63. sub$predicted_id_ext <- as.character(new_df$Var2[mat])
  64. # Save UMAP and metadata for each subcluster
  65. pdf(paste0(cl, "_sub.pdf"))
  66. print(DimPlot(sub, group.by = "seurat_clusters", label = TRUE))
  67. print(DimPlot(sub, group.by = "subclass_label", label = TRUE))
  68. print(DimPlot(sub, group.by = "predicted_id_ext", label = TRUE))
  69. print(DimPlot(sub, group.by = "predicted.id", label = TRUE))
  70. print(DimPlot(sub, group.by = "age"))
  71. print(FeaturePlot(sub, "log1p_total_counts", max.cutoff = 2000))
  72. dev.off()
  73. meta <- [email hidden][, c("age", "predicted.id", "prediction.score.max",
  74. "predicted_id_ext", "subclass_label", "sub_leiden")]
  75. write.table(meta, paste0(cl, "_sub_meta.txt"), sep = "\t", quote = FALSE)
  76. allmeta[[cl]] <- meta
  77. }

transfer_labels_MERFISH.R at commit 43e7a41, no license · at the source

Overview

Authors: Maria Luisa Amaral1,2, Sainath Mamde1, Michael Miller3, Xiaomeng Hou3, Jessica Arzavala4, Julia Osteen4, Nicholas D. Johnson4, Elizabeth Walker Smoot3, Qian Yang3, Emily Eisner3, Qiurui Zeng5,6, Cindy Tatiana Báez-Becerra4, Jacqueline Olness3, Joseph Colin Kern3, Jonathan Rink4, Ariana Barcoma4, Silvia Cho4, Stella Cao4, Nora Emerson4, Jasper Lee4
and 10 other authorsJackson Willier4, Timothy Loe1, Henry Jiao3, Songpeng Zu1, Quan Zhu3, Sebastian Preissl3,7,8,9,10, Allen Wang3, Joseph R. Ecker5,11, Maria Margarita Behrens4, Bing Ren1,12,13,14
14 affiliations
  1. Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
  2. Bioinformatics and Systems Biology Program, University of California, San Diego, La Jolla, CA 92093, USA
  3. Center for Epigenomics, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
  4. Computational Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
  5. Genomic Analysis Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
  6. Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA
  7. Institute of Experimental and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
  8. CIBSS – Centre for Integrative Biological Signaling Studies, University of Freiburg, Freiburg, Germany
  9. Department of Pharmacology and Toxicology, Institute of Pharmaceutical Sciences, University of Graz, 8010 Graz, Austria
  10. Field of Excellence BioHealth, University of Graz, Graz, Austria
  11. Howard Hughes Medical Institute, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
  12. New York Genome Center, New York, NY 10013, USA
  13. Departments of Genetics and Development, Biochemistry and Molecular Biophysics, and Systems Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY 10032, USA
  14. Lead contact
Journal: Cell reports, volume 45, issue 3, article 117073
Dates: published online 12 March 2026; in print 24 March 2026
Type: Research article · Language: English
License: CC BY-NC-ND
Identifiers: DOI 10.1016/j.celrep.2026.117073 · PMID 41824460 · PMCID PMC13189690 · OpenAlex W7135077805
Open access: gold, a free copy (OpenAlex)
Status: code verified
Categories: genetics / omics (modality), mouse (organism), cellular / molecular (subfield)
Methods: Statistics, Smoothing, state filtering, decompositions, Preprocessing, Connectivity, Machine learning
Keywords: Aging, Transposable elements, Heterochromatin, Epigenome, Mouse Brain, Single-cell, Cp: Neuroscience, Cp: Genomics
MeSH: Aging*, Brain*, Epigenomics*, Heterochromatin*, Single-Cell Analysis*, Transcription Factors*, Animals, Male, Mice, Mice, Inbred C57BL, Neurons (* major topic)
Topic: Single-cell and spatial transcriptomics (Molecular Biology, Biochemistry, Genetics and Molecular Biology), according to OpenAlex
Funding: National Institute on Aging; NIA NIH HHS (R01 AG066018)
Citations: cited by 8 papers (Europe PMC); 74 references in the paper
Research resources: RRID:SCR_018093

Abstract

The abstract is not reproduced here: the paper's license (CC BY-NC-ND) does not allow it. Read it in the paper, at the publisher or on Europe PMC.

Repository

Its files are read in the Code ↔ Paper reader above, with 14 matches between paragraphs and lines of code.

luisajamaral/aging_mouse_brain_code

License: none: the authors keep all their rights
State: the link answers, verified on 30 September 2026
Evidence: files inventoried
Commit: 43e7a41eefdc9017722f05a326f336f13685f23c, 21 April 2025
Languages: R (124), Python (24), Shell (3)
Size: 158 files, 151 scripts
Software Heritage: not archived
Found in: “Data and code availability”
Holds: README
Not found: license file, CITATION.cff, environment file, tests, continuous integration, documentation
Tools: ggplot2 (109 files), tidyverse (79 files), data.table (69 files), pheatmap (63 files), Seurat (55 files), pandas (23 files), NumPy (22 files), edgeR (17 files), Scanpy (16 files), clusterProfiler (11 files), reshape2 (10 files), patchwork (9 files), DESeq2 (7 files), broom (5 files), Matplotlib (5 files), pysam (5 files), SciPy (5 files), anndata (4 files), seaborn (3 files), cowplot (2 files), ggpubr (2 files), reticulate (2 files), rpy2 (2 files), BEDTools (1 file), lme4 (1 file), NetworkX (1 file), Pingouin (1 file), SAMtools (1 file), Snakemake (1 file), Subread (featureCounts) (1 file), xarray (1 file)
Availability: 1 check, the latest on 30 September 2026: the link answers
  • 30 September 2026: the link answers
152 files

The paper's code and data availability statement is in the Data section.

Tracing map

Proposed by the machine: these links were found in the paper and verified at the source, without human review. The map will receive a Zenodo DOI once one of the paper's authors has validated it with their ORCID.

What the map holds:

  • 1 repository of the authors' code, each at its verified commit, with its license and how the link was found in the paper;
  • 151 scripts, each with its path and the digest of its content;
  • 14 matches between paragraphs of the paper and lines of the code (method lexical-v1);
  • neither the text of the paper nor the code itself.

Its JSON (tracing-map.json) is deposited on Zenodo with its DOI once the map is validated.

Data

No dataset and no data link were found in the paper.

Code and data availability statement

The paper has a code and data availability statement. Its license (CC BY-NC-ND) does not allow reproducing it here; in short, from what the harvester recognized in it:

Read it in the paper: doi.org/10.1016/j.celrep.2026.117073.

Versions

The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.

Version 1, 30 September 2026: the first record

Recorded: type, language, journal, volume, issue, pages, dates, 30 authors, 8 keywords, 11 MeSH terms, 2 funders, 74 references, 1 RRID.

Cite

This paper

Amaral, M. L., Mamde, S., Miller, M., Hou, X., Arzavala, J., Osteen, J., Johnson, N. D., Smoot, E. W., Yang, Q., Eisner, E., Zeng, Q., Báez-Becerra, C. T., Olness, J., Kern, J. C., Rink, J., Barcoma, A., Cho, S., Cao, S., Emerson, N., . . . Ren, B. (2026). Single-cell epigenomics uncovers heterochromatin instability and transcription factor dysfunction during mouse brain aging. Cell reports, 45(3), 117073. https://doi.org/10.1016/j.celrep.2026.117073

BibTeX

@article{amaral2026single,
author = {Amaral, Maria Luisa and Mamde, Sainath and Miller, Michael and Hou, Xiaomeng and Arzavala, Jessica and Osteen, Julia and Johnson, Nicholas D. and Smoot, Elizabeth Walker and Yang, Qian and Eisner, Emily and Zeng, Qiurui and Báez-Becerra, Cindy Tatiana and Olness, Jacqueline and Kern, Joseph Colin and Rink, Jonathan and Barcoma, Ariana and Cho, Silvia and Cao, Stella and Emerson, Nora and Lee, Jasper and Willier, Jackson and Loe, Timothy and Jiao, Henry and Zu, Songpeng and Zhu, Quan and Preissl, Sebastian and Wang, Allen and Ecker, Joseph R. and Behrens, Maria Margarita and Ren, Bing},
title = {{Single-cell epigenomics uncovers heterochromatin instability and transcription factor dysfunction during mouse brain aging}},
journal = {Cell reports},
year = {2026},
month = mar,
volume = {45},
number = {3},
pages = {117073},
publisher = {Cell Press},
issn = {2211-1247},
doi = {10.1016/j.celrep.2026.117073},
url = {https://doi.org/10.1016/j.celrep.2026.117073},
pmid = {41824460},
pmcid = {PMC13189690}
}

RIS

TY - JOUR
AU - Amaral, Maria Luisa
AU - Mamde, Sainath
AU - Miller, Michael
AU - Hou, Xiaomeng
AU - Arzavala, Jessica
AU - Osteen, Julia
AU - Johnson, Nicholas D.
AU - Smoot, Elizabeth Walker
AU - Yang, Qian
AU - Eisner, Emily
AU - Zeng, Qiurui
AU - Báez-Becerra, Cindy Tatiana
AU - Olness, Jacqueline
AU - Kern, Joseph Colin
AU - Rink, Jonathan
AU - Barcoma, Ariana
AU - Cho, Silvia
AU - Cao, Stella
AU - Emerson, Nora
AU - Lee, Jasper
AU - Willier, Jackson
AU - Loe, Timothy
AU - Jiao, Henry
AU - Zu, Songpeng
AU - Zhu, Quan
AU - Preissl, Sebastian
AU - Wang, Allen
AU - Ecker, Joseph R.
AU - Behrens, Maria Margarita
AU - Ren, Bing
TI - Single-cell epigenomics uncovers heterochromatin instability and transcription factor dysfunction during mouse brain aging
T2 - Cell reports
J2 - Cell Rep
PY - 2026
DA - 2026/03/12
VL - 45
IS - 3
SP - 117073
SN - 2211-1247
PB - Cell Press
DO - 10.1016/j.celrep.2026.117073
UR - https://doi.org/10.1016/j.celrep.2026.117073
LA - en
ER -

CSL-JSON

{
"id": "10.1016/j.celrep.2026.117073",
"type": "article-journal",
"title": "Single-cell epigenomics uncovers heterochromatin instability and transcription factor dysfunction during mouse brain aging",
"container-title": "Cell reports",
"author": [
{
"family": "Amaral",
"given": "Maria Luisa"
},
{
"family": "Mamde",
"given": "Sainath"
},
{
"family": "Miller",
"given": "Michael"
},
{
"family": "Hou",
"given": "Xiaomeng"
},
{
"family": "Arzavala",
"given": "Jessica"
},
{
"family": "Osteen",
"given": "Julia"
},
{
"family": "Johnson",
"given": "Nicholas D."
},
{
"family": "Smoot",
"given": "Elizabeth Walker"
},
{
"family": "Yang",
"given": "Qian"
},
{
"family": "Eisner",
"given": "Emily"
},
{
"family": "Zeng",
"given": "Qiurui"
},
{
"family": "Báez-Becerra",
"given": "Cindy Tatiana"
},
{
"family": "Olness",
"given": "Jacqueline"
},
{
"family": "Kern",
"given": "Joseph Colin"
},
{
"family": "Rink",
"given": "Jonathan"
},
{
"family": "Barcoma",
"given": "Ariana"
},
{
"family": "Cho",
"given": "Silvia"
},
{
"family": "Cao",
"given": "Stella"
},
{
"family": "Emerson",
"given": "Nora"
},
{
"family": "Lee",
"given": "Jasper"
},
{
"family": "Willier",
"given": "Jackson"
},
{
"family": "Loe",
"given": "Timothy"
},
{
"family": "Jiao",
"given": "Henry"
},
{
"family": "Zu",
"given": "Songpeng"
},
{
"family": "Zhu",
"given": "Quan"
},
{
"family": "Preissl",
"given": "Sebastian"
},
{
"family": "Wang",
"given": "Allen"
},
{
"family": "Ecker",
"given": "Joseph R."
},
{
"family": "Behrens",
"given": "Maria Margarita"
},
{
"family": "Ren",
"given": "Bing"
}
],
"container-title-short": "Cell Rep",
"volume": "45",
"issue": "3",
"page": "117073",
"DOI": "10.1016/j.celrep.2026.117073",
"PMID": "41824460",
"PMCID": "PMC13189690",
"ISSN": "2211-1247",
"publisher": "Cell Press",
"URL": "https://doi.org/10.1016/j.celrep.2026.117073",
"language": "en",
"issued": {
"date-parts": [
[
2026,
3,
12
]
]
}
}

The tracing map gets a citation of its own once an author has validated it and it has a DOI.

Similar papers

The papers with a page that share the most with this one: the tools found in their code, their categories, datasets, cited references and authors, the rarest counting most.

[1] doi:10.1101/gr.281113.125 [code]
Single-nucleus multiomic profiling of the aging mouse substantia nigra reveals conserved gene alterations linked to Parkinson's disease.
Journal: Genome research
In common: BEDTools, edgeR, reticulate, 13 other tools, genetics / omics, mouse, cellular / molecular, 14 references
[2] doi:10.1016/j.xcrm.2026.102766 [code]
A longitudinal single-cell and spatial multiomic atlas of pediatric high-grade glioma.
Journal: Cell reports. Medicine
In common: pysam, rpy2, edgeR, 20 other tools, genetics / omics, cellular / molecular, 4 references
[3] doi:10.1038/s41586-026-10512-9 [code]
Astrocyte glucocorticoid receptor signalling restricts neuronal plasticity.
Journal: Nature
In common: Subread (featureCounts), pysam, BEDTools, 16 other tools, mouse, cellular / molecular, 6 references
[4] doi:10.1186/s13059-026-04177-w [code]
Genomic sequence evolution underlying human neocortical interareal diversification.
Journal: Genome biology
In common: Snakemake, pysam, BEDTools, 16 other tools, genetics / omics, mouse, cellular / molecular, 6 references
[5] doi:10.1038/s41586-026-10629-x [code]
Whole-genome duplication shaped cell-type evolution in the vertebrate brain.
Journal: Nature
In common: BEDTools, reticulate, Pingouin, 19 other tools, genetics / omics, mouse, cellular / molecular, 2 references
[6] doi:10.1126/sciadv.aed2952 [code]
Activation of transposable elements is linked to a region- and cell type-specific interferon response in Parkinson's disease.
Journal: Science advances
In common: Subread (featureCounts), pysam, BEDTools, 18 other tools, cellular / molecular, 2 references
[7] doi:10.1038/s41467-026-76675-1 [code]
Long-read proteogenomic atlas of human neuronal differentiation reveals isoform diversity informing neurodevelopmental risk mechanisms.
Journal: Nature communications
In common: pysam, BEDTools, SAMtools, 19 other tools, genetics / omics, 1 reference
[8] doi:10.1093/bioinformatics/btag592 [code]
Network-based stratification of allele-specific expression reveals patient subgroups in Huntington's disease.
Journal: Bioinformatics (Oxford, England)
In common: Subread (featureCounts), SAMtools, edgeR, 19 other tools, genetics / omics, 1 reference
[9] doi:10.1038/s42003-026-10957-8 [code]
Brain defence by the extracellular matrix protein Cochlin.
Journal: Communications biology
In common: Subread (featureCounts), SAMtools, edgeR, 19 other tools, mouse, cellular / molecular
[10] doi:10.1038/s41467-026-69944-6 [code]
Multi-modal dissection of cell-type specific TDP-43 pathology in the motor cortex.
Journal: Nature communications
In common: pysam, BEDTools, SAMtools, 16 other tools, genetics / omics, 4 references

Contribute

The authors of this paper can claim it, correct its record and validate its tracing map, and the maintainers of its code (its owner, or a public member of its organization) correct what it says of their repository; anyone signed in can ask for its removal. Every request goes to OSCR's own machine, which answers it; your account page follows them.

Sign in with ORCID to claim this paper as one of its authors, correct its record or validate its tracing map: when the paper's metadata lists your ORCID iD, you are recognized at once. Maintainers of its code: sign in with GitHub, then claim the repository on your account page.

Request its removal

To ask OSCR to remove this record, the copies of its authors' scripts or its tracing map, use the removal request page: signed in, you say who you are, what to remove and why, then review and confirm the request. Published rules decide every request (how).

Discussion, reproductions, activity

Discussion: questions and error reports about this paper and its code, from signed-in readers and its authors. It opens with sign-in.

Reproductions: reports from readers who ran the authors' code: what they reproduced, with which environment, commit and data. It opens with sign-in.

Activity: what happens around this paper: new versions of its record, its map's validation, discussions and reproductions. It opens with sign-in.