Flávia E. Rius
Data scientist interested in polygenic risk scores, cancer, and a few unrelated things.
#rstats #bioinformatics
https://flaviaerius.com
- Is there any buzzfeed-like quiz out there yet to figure out which AI model is the best for you? It would be fun.
- Guys, you need to come up with a better strategy of getting rid of robots. I lose half of my day recognizing buses, bikes and stairs.
- Creating a package to organize my work, instead of just reloading functions from scripts, was the best thing I did so far this year. #rstats
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- Reposted by Flávia E. RiusThe Shingles vaccine and reduction of dementia: a new natural experiment from Canada replicated 3 others and adds to this week's link to slowing of biological aging. erictopol.substack.com/p/spotlight-...
- If you are using independent training and testing sets which need PCA calculation in genomics, be sure to do it using projection and to the same panel, alongside the same parameters (maf, ld and missingness). Otherwise, you are comparing bananas to apples. #genomics #bioinformatics
- Reposted by Flávia E. RiusSpeak at posit::conf(2026) and share your R & Python stories! Accepted speakers get: ✨ Travel & lodging help ✨ Free conference pass ✨ Professional coaching Apply by Feb 6 to join us Sept 14-16 in Houston, TX! Submit here: pos.it/conf-talk-2026 #positconf2026 #rstats #pydata
- 3 things I learned from @stephenturner.us workshop on #R pkg development in #Positron - there is a light bulb icon that creates a roxygen template for an R file - available::available("pkgname") checks if the name you want has already been used - {pkgndep} evaluates heaviness of pkg dependencies
- I use a gist everytime I need to run a few basic #bioinformatics explorations in a new instance, and thought I could share it here so someone could benefit from it too! I have forked it and adapted a bit to my needs. Here it goes: gist.github.com/flaviaerius/...
- I won't miss this one!
- Reposted by Flávia E. Riuspoisonfrogs: Color Palettes Inspired by Neotropical Poison Frogs laurenoconnelllab.github.io/poisonfrogs/ #Rstats
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- Crazy interesting biology! I wonder if there is any phenotypic evidence of this chimerism.
- A fascinating case report. The DNA of a female murder victim was genotyped and it turns out that she has been a chimera: a mixture of 46XX/46XY cell lines. The analysis (STR-based) found: 1. The maternal chromosome was identical between the two cell lines. www.fsigenetics.com/article/S187... 1/6
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- Tip for formatting text on Google Docs by Gemini *without changing content*: If the text is in one language, use the prompt to format in another language. It worked perfectly for me! Before that, every time I asked it to "format without changing text" it failed. #gemini
- My talk on #positconf2025 is available on Youtube! Check it out: youtu.be/phh8p2ImBMQ?...
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- So interesting! Highest SNP heritabilities (which mean variation explained by genetics) after controlling for parent education and birthplace were around 10% for social sciences and journalism, for arts and humanities, and for natural sciences, mathematics and statistics.
- 1/ 🚨New paper in Nature Genetics Genetic factors are associated with the educational fields people study, from arts to engineering. Article: www.nature.com/articles/s41... FAQ: www.thehastingscenter.org/genomic-find...
- About PRSs in the clinics: people do not understand risk in general, not only the risk related to PRS. The solution is educating health professionals to communicate PRS risk (and other risks) clearly.
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- Probably late, but his week I finally understood the meaning of prompt engineering. I used a prompt, extracted results, measured them, then adjusted both the input and prompt for better results, measured them, adjusted inputs again, measured results, and finally applied to a new dataset.
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- I just want to share that I had a blast at #positconf2025! Met so many wonderful people, and gave a talk for the first time. It was awesome!
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- I have just experienced the magic of rv in recovering my R packages after having to format my laptop. Completely recommend! github.com/A2-ai/rv #rstats
- Every #Rstats user should read this post from @jennybryan.bsky.social. Especially beginner to intermediate-level ones. www.tidyverse.org/blog/2017/12...
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- TIL you can set different values of alpha based on categories on #ggplot2. Set 'aes(alpha = categories_col)', and then use scale_alpha_manual() to set specific transparency proportions. I used a lower alpha in order to visualize the most important categories here. #rstats
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- TIL the parameter .before in mutate() from {dplyr}. It adds the new column(s) created to the *beginning* of the dataframe, instead of to the end. Quite useful! Source: #RforDataScience (2e) (sometimes you should read stuff you think you already know) #rstats
- Reposted by Flávia E. Rius“The idea that taking walks, reading things unrelated to your research, and hanging out with strangers in a campus pub should be considered part of the serious process of thinking, but might well meet with skepticism in practice.” www.pnas.org/doi/10.1073/...
- Use "export" + the variable name and value when creating a chain of bash scripts, for it to be available in the called script too. For example: export LD_CORRELATION=0.2 bash run_ld_correlation_reference.sh bash run_ld_correlation_samples.sh #bioinformatics
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- Quick #bioinformatics tip: If you'll use plink files in your pipeline, whenever possible, transform your VCF into pgen or bgen ASAP! Plink files are much faster to work with.
- I need to say that Lonely Planet is still better than chatGPT to find interesting attractions for a trip.
- jq is so useful.
- I have the impression, when reading papers from the 1990's and before, that concepts were explained more clearly than nowadays.
- Today I went to the weekly seminar of the department I do my postdoc in (FMUSP), mostly remotely. It was great to interact with other researchers in-person. I miss this sometimes.
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- To clarify my poor post, it is NOT present in base R. Only when loading {data.table}. Still exciting for me, though! #rstats
- YIL that %notin% is already a thing in R. I know it's been out for a while, from {data.table}, but I have discovered it yesterday. Yes, I was still using the structure !(column %in% vector). 🫠 Sharing in case you've missed it too! #rstats
- YIL that %notin% is already a thing in R. I know it's been out for a while, from {data.table}, but I have discovered it yesterday. Yes, I was still using the structure !(column %in% vector). 🫠 Sharing in case you've missed it too! #rstats
- Now that we know Brazil has one of the most admixed populations in the world, make sure to have a look on our recently published paper on the validation of two #BreastCancer #PRS in a large cohort of Brazilians (N=15k)! doi.org/10.3390/diag...
- If you haven't registered yet, this is your last chance! Come with me to learn how to extract and clean tables from PDFs using #RStats, and help Ukraine at the same time!
- Are you interested in learning how to extract tables from PDFs using simple and effective R tools? I’ll give a workshop next week as part of the Workshops for Ukraine initiative. More details and registration here: sites.google.com/view/dariia-... #rstats
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