| 0 | 1 | 2 | 3 | 4 | |
| 0 | 1 | 0 | 0 | 0 | 0 |
| 1 | 0 | 5 | 6 | 2 | 0 |
| 2 | 0 | 2 | 6 | 6 | 2 |
| 3 | 0 | 1 | 2 | 1 | 0 |
Topological data analysis (TDA) has emerged as an effective approach in data science, with its key technique, persistent homology, rooted in algebraic topology. Although alternative approaches based on differential topology, geometric topology, and combinatorial Laplacians have been proposed, combinatorial commutative algebra has hardly been developed for machine learning and data science. In this work, we introduce persistent Stanley–Reisner theory to bridge commutative algebra, combinatorial algebraic topology, machine learning, and data science. We propose persistent h-vectors, persistent f-vectors, persistent graded Betti numbers, persistent facet ideals, and facet persistence modules. Stability analysis indicates that these algebraic invariants are stable against geometric perturbations. We carried out Stanley–Reisner machine learning prediction of a molecular dataset to demonstrate the utility of the proposed persistent Stanley–Reisner theory for practical applications.
| Citation: |
Figure 3. An illustration of the persistent variations of the $ h $-vectors, $ f $-vectors, Betti numbers, and graded Betti numbers, respectively. Each curve represents a function that assumes discrete integer values. To enhance the visual clarity of the plots and prevent overlap, a slight increment is added to the curves, ensuring that each curve remains distinguishable within the graphical representation
Figure 4. Illustration of the methodology and key steps in the proposed application of persistent Stanley–Reisner theory. Given a molecular input, a corresponding simplicial complex with an associated filtration is generated. Critical values and facet persistence barcodes are computed, leading to the construction of relevant features
Figure 5. Structural representations and filtrations of two isomers. The top row presents the first isomer and its corresponding filtration, while the bottom row depicts the second and filtration processes. In both structures, hydrogen atoms are represented in white, boron atoms in green, and carbon atoms in brown
Figure 7. Facet persistence diagrams for the isomers under investigation. (a) the diagram corresponding to the first isomer, capturing the persistence of topological features across the first three homological dimensions. (b) the diagram corresponding to the second isomer, similarly capturing the persistence intervals of the faces of the first three dimensions
Table 1. Table of graded Betti numbers of the simplicial complex in Figure 1
| 0 | 1 | 2 | 3 | 4 | |
| 0 | 1 | 0 | 0 | 0 | 0 |
| 1 | 0 | 5 | 6 | 2 | 0 |
| 2 | 0 | 2 | 6 | 6 | 2 |
| 3 | 0 | 1 | 2 | 1 | 0 |
Table 2. From left to right: The betti tables at the critical values of the filtration in Figure 2
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A geometric representation of six vertices forming a pyramid with two distinct loops, each attached to different edges
Three representative plots of the filtration of a triangular bipyramid with an equatorial triangular cross-section
An illustration of the persistent variations of the
Illustration of the methodology and key steps in the proposed application of persistent Stanley–Reisner theory. Given a molecular input, a corresponding simplicial complex with an associated filtration is generated. Critical values and facet persistence barcodes are computed, leading to the construction of relevant features
Structural representations and filtrations of two isomers. The top row presents the first isomer and its corresponding filtration, while the bottom row depicts the second and filtration processes. In both structures, hydrogen atoms are represented in white, boron atoms in green, and carbon atoms in brown
Facet persistence barcodes of the two isomers. (a) the barcodes of the first isomer. (b) the barcodes of the second isomer. The first isomer exhibits a single essential persistent edge, whereas the second isomer features at least three or more persistent edges
Facet persistence diagrams for the isomers under investigation. (a) the diagram corresponding to the first isomer, capturing the persistence of topological features across the first three homological dimensions. (b) the diagram corresponding to the second isomer, similarly capturing the persistence intervals of the faces of the first three dimensions
The performance of utilizing the critical values of the persistent facet ideals evaluated with six metrics in classifying OIHP materials. The 5-Nearest Neighbors (5-NN) classifier is used on the sets of the critical values generated from the Vietoris–Rips filtration