# Questions tagged [pattern-matching]

The tag has no usage guidance.

10 questions
Filter by
Sorted by
Tagged with
0answers
67 views

### Can the same dataset be described as Chaotic & Pareto/ Power law distribution?

I'm trying to abstract the mathematical part of the problem as much as possible before the details follow, There's this dynamic data set that's $O(2^{32})$, a recent result described it as a power-law ...
1answer
69 views

### Find cycles with specific weights in complete graph

Assume I have an undirected edge-weighted complete graph $G$ of $N$ nodes (every node is connected to every other node, and each edge has an associated weight). Assume that each node has a unique ...
0answers
111 views

### Graph pattern matching

Given a weighted, oriented, connected graph with $10^7$ vertices and $10^{10}$ edges I need to implement the algorithm for searching various patterns on this graph for less than polynomial time. ...
1answer
104 views

### What is the most appropriate ML technology or math tool for classifying/recognizing 2D scatter plot shapes? [closed]

I would like to be able to automatically classify an input scatter plot into a limited, predefined set of 2-D scatter plots (see attached image), such as a Circle, a Cross, a Straight Line and a Curvy ...
2answers
874 views

### Why does this Moiré pattern look this way?

I was making some gifs of Mobius transformations in Matlab, and some strange patterns began to appear. I'm not sure if a deeper knowledge of the filetype/algorithm is needed to understand this ...
0answers
196 views

### On the cardinality of the set of right-truncatable primes

We say that the (base ten) prime number $p=a_{n}a_{n-1}a_{n-2}\cdots a_{1}a_{0}$ is right-truncatable if all of the following numbers are prime: \begin{eqnarray*}a_{n},\\a_{n}a_{n-1},\\ a_{n}a_{n-1}...
0answers
113 views

### Expressing Numbers with a Minimal Sum in Powers of 2 [closed]

The first 64 bits of pi are: 11.00100100001111110110101010001000100001011010001100001000110100 Computer multiplication can be sped up by looking for patterns and ...
1answer
369 views

### Shortest absolute value of path in graph

Suppose we have a weighted, acyclic digraph, with positive and negative edge weights. Is there an algorithm that determines whether there is a path of weight zero between vertices A and B? The ...
2answers
347 views

### Finding local patterns in a circular list

Consider a list $\boldsymbol{x}=x_0,x_1,\ldots,x_{n-1}$, which we consider to be circular by taking the subscripts modulo $n$. The entries in the list are distinct integers. A local pattern is a ...
1answer
273 views

### Stricter permutation patterns

(I asked this ten days ago on math.SE, but I received no reply, so I'm trying again here.) A lot of work has been done on patterns in permutations, where a permutation is said to match a given ...