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of 44
pro vyhledávání: '"Wiroonsri, Nathakhun"'
Selecting the appropriate number of clusters is a critical step in applying clustering algorithms. To assist in this process, various cluster validity indices (CVIs) have been developed. These indices are designed to identify the optimal number of cl
Externí odkaz:
http://arxiv.org/abs/2402.02162
The optimal number of clusters is one of the main concerns when applying cluster analysis. Several cluster validity indexes have been introduced to address this problem. However, in some situations, there is more than one option that can be chosen as
Externí odkaz:
http://arxiv.org/abs/2308.14785
Autor:
Oo, Moe Moe, Wiroonsri, Nathakhun, Klamsakul, Natawat, Jiarasuksakun, Thiradet, Kaemawichanurat, Pawaton
Hosoya index and Merrifield-Simmons index are two well-known topological descriptors that reflex some physical properties, boiling point or heat of formation for instance, of bezenoid hydrocarbon compounds. In this paper, we establish the generating
Externí odkaz:
http://arxiv.org/abs/2301.09281
Autor:
Thongtha, Dawud, Wiroonsri, Nathakhun
Estimating the number of natural disasters benefits the insurance industry in terms of risk management. However, the estimation process is complicated due to the fact that there are many factors affecting the number of such incidents. In this work, w
Externí odkaz:
http://arxiv.org/abs/2206.00203
Autor:
Wiroonsri, Nathakhun
We prove concentration inequalities of the form $P(Y \ge t) \le \exp(-B(t))$ for a random variable $Y$ with mean zero and variance $\sigma^2$ using a coupling technique from Stein's method that is so-called approximate zero bias couplings. Applicatio
Externí odkaz:
http://arxiv.org/abs/2206.00199
Thailand has entered into an aging society since the year 2000. Using the 2017 Survey of the Older Persons in Thailand collected by Thailand National Statistical Office, this study uses cross tabulation, random forest with variable importance measure
Externí odkaz:
http://arxiv.org/abs/2206.00193
Autor:
Wiroonsri, Nathakhun
Publikováno v:
Pattern Recognition, Volume 145, 109910, 2024
There are various cluster validity indices used for evaluating clustering results. One of the main objectives of using these indices is to seek the optimal unknown number of clusters. Some indices work well for clusters with different densities, size
Externí odkaz:
http://arxiv.org/abs/2109.11172
Autor:
Wiroonsri, Nathakhun
Publikováno v:
In Pattern Recognition January 2024 145
Publikováno v:
In Computational Statistics and Data Analysis February 2025 202
Autor:
Wiroonsri, Nathakhun
Publikováno v:
Journal of Mathematical Analysis and Applications, 480(1), 123396, 2019
We use Stein's method to provide non asymptotic $L^1$ bounds to the normal for functionals of associated point processes. As for supporting tools, we use the connection between association and $\alpha$-mixing properties that was recently uncovered by
Externí odkaz:
http://arxiv.org/abs/1903.04116