Sebastian Krantz✓ Add us as a preferred source on Google
🔄 Data last refreshed 2 months ago
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Make a deal with Sebastian Krantz
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
218
Account age
3 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Sebastian Krantz
Known for
11 views
{collapse} 2.1.0 is out! It introduces a new fslice() function (https://sebkrantz.github.io/collapse/reference/fslice.html), a new theory-consistent weighted quantile algorithm (https://sebkrantz.github.io/collapse/reference/fquantile.html) with excellent properties. And some convenience features such as join requirements: #rstats #DataScience
3 views
Version 0.3.0 of the {dfms} package for dynamic factor modelling in R just made it to CRAN, adding support for monthly + quarterly mixed frequency estimation. This allows for easy business cycle indicator estimation in R.
More info at https://sebkrantz.github.io/dfms/articles/introduction.html#estimation-with-mixed-frequency and https://sebkrantz.github.io/dfms/.
Overall, progress has been very s
2 views
I just released an update to OptimalTransportNetworks.jl (https://github.com/OptimalTransportNetworks/OptimalTransportNetworks.jl) providing performance improvements through hand-coded gradients and hessians. I also published a new web-application – the Transport Network Optimizer – available at https://otn.sebastiankrantz.com. #Julialang #DataScience
📊 Post engagement
Recent posts · likes + reposts
Dec 30latest
9
Avg engagement / post
3–11
Typical post (engagement)
4.1%
Engagement vs followers
66/100
Consistent reach
Nov 2022
On Mastodon since
Half of recent posts land between 3 and 11 likes + reposts (median 8) — a dependable floor a sponsored post can count on.
🔥 Top post: I’m thrilled to introduce flownet (https://sebkrantz.github.io/f · 21 likes + reposts
📊 Activity & format
Posting cadence
0.15 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 9 text · 3 image · 0 video.
Follower / following
9.1×
Follows 24 back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Recent posts
View on Mastodon ↗
I just released an update to OptimalTransportNetworks.jl (https://github.com/OptimalTransportNetworks/OptimalTransportNetworks.jl) providing performance improvements through hand-coded gradients and hessians. I also published a new web-app…
The article on "collapse: Advanced and Fast Statistical Computing and Data Transformation in R" has now been published (open-access) in the Journal of Statistical Software: https://www.jstatsoft.org/article/view/v116i01
{collapse} (https:/…
Recording of my talk on {collapse} and the {fastverse} at the Bank of Portugal‘s workshop on „Speeding up Empirical Research: Tools and Techniques for Fast Computing“ in December is now online: https://www.youtube.com/watch?v=qO5dHIPsfK8
I…
Updated windows benchmarks for in-memory database-like operations by Adrian Antico show that {collapse} still leads on lagging and casting benchmarks (not covered in DuckDB benchmarks) and remains overall very competitive: https://github.c…
RE: https://fosstodon.org/@sebkrantz/115980545195698122
#Rstats
I'm excited to share the release and rOpenSci publication (following peer-review) of dfms 1.0 (https://docs.ropensci.org/dfms/), a high-performance, feature-rich implementation of Dynamics Factor Models for R, supporting mixed-frequency es…
Version 0.3.0 of the {dfms} package for dynamic factor modelling in R just made it to CRAN, adding support for monthly + quarterly mixed frequency estimation. This allows for easy business cycle indicator estimation in R.
More info at http…
{collapse} 2.1.0 is out! It introduces a new fslice() function (https://sebkrantz.github.io/collapse/reference/fslice.html), a new theory-consistent weighted quantile algorithm (https://sebkrantz.github.io/collapse/reference/fquantile.html…
The {collapse} arXiv paper has just been updated - following an extensive revision: https://arxiv.org/abs/2403.05038. I believe it is a great resource for anyone doing scientific computing with #rstats.
There is now a #fastverse benchmark wiki (https://github.com/fastverse/fastverse/wiki/Benchmarks) where users can freely contribute benchmarks. If you have benchmarks involving {fastverse} packages ({collapse}, {data.table}, etc., includin…
I just improved the vignette a bit further, adding some detailed benchmarks and a section on Global Options. I needed to correct myself: it is not true that {collapse} global options should never be invoked in packages - they just need to …
🐘 Community & instance
Home server
fosstodon.org
A open-source software server — its members and audience skew toward that niche, so expect a community-aligned, engaged following.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 9 views per post.
📤Posts about 0.2× per week.
🕵️ Fake follower check
Estimated75/100
Good
Credibility score
92%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 92% real, active audience · Low fake-follower risk.
- Engagement (~4.1% of followers engage each post) is around typical for Mastodon.
- Verified account.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
PhD graduate in Quantitative Economics, working on Africa (Infrastructure, GVCs, Macroeconomic Stability), and creator of R packages 'collapse', 'fastverse', 'dfms', 'flownet', etc.. I use C/C++ to help make complex computations in R simple and fast.
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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13%
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11%
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10%
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Frequently asked questions
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How many followers does Sebastian Krantz have?
Sebastian Krantz has 218 followers on Mastodon.
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