Florian Ingels
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fingels.bsky.social
Florian Ingels
@fingels.bsky.social
Ph.D. in Mathematics

Currently postdoc at @bonsaiseqbioinfo.bsky.social, in Lille.

Investigating patterns (substructures) in structured data (sequences, trees, graphs) of predominantly biological origin.

More at https://fingels.github.io/
And yes, the result is true when taking the limit to infinity. In the proof of Theorem 1, we establish the following
--- where E[tau_M] / (M-k+1) is the expected specific density of a random sequence of length M (and then M->infty)

You can derive actually an interval for a finite sequence from this
November 27, 2025 at 11:01 PM
But as you can see, numerically with Monte Carlo, we obtain that E[Z_i] are somehow around (w+1)/2, so all good.

(and the values E[Z_i] - (w+1)/2 are, equivalently, somewhat around 0)
November 27, 2025 at 10:56 PM
They're not, actually ! For instance, this is what we (formally) obtain for Z1 and Z2, with random minimizers. For w=10, E[Z1] = 5.5 whereas E[Z2] = 5.87 (there is a good reason for this, I can explain more if you're curious, but basically it is a border effect).
November 27, 2025 at 10:56 PM
Remember that for random minimizers, d = 2/(w+1) ? Well, for d*, we have this lovecraftian thing.

21/
November 27, 2025 at 10:18 AM
The specific d* of a k-mer set X is defined as the number of distinct minimizers chosen divided by |X|.

For a given local scheme, the (expected) d* is computed as the average specific d* of all possibles k-mer sets, taken uniformly at random.

- a straightforward parallel to standard density

19/
November 27, 2025 at 10:18 AM
So basically, we assimilate the sequence of m-mers of the base sequence S as a sequence of integers X.

And define Y as the sequence of positions selected in each window.

Since density is usually defined on random sequences, we assimilate X and Y as random sequences, of unknow distribution.

8/
November 27, 2025 at 10:18 AM
Both are true but waking up this morning was a real challenge haha!

somehow I live by this motto from an old Absinthe commercial
July 8, 2025 at 1:19 PM
Last week I got to present my work on lexicographical minimizers at DSB, in Pisa. It was a wonderful moment, thanks again to everyone involved!
March 12, 2025 at 1:02 PM