Kristoffer H Hellton
Biographic Data
| ID | 8867441 |
|---|---|
| NAME | Kristoffer H Hellton |
| GIVEN NAMES | Kristoffer H |
| FAMILY NAME | Hellton |
| SIGNATURE | HELLTON K H |
| AFFILIATIONS | Norwegian Computing Center, Oslo, Norway |
| ORCID | 0000-0002-4779-486X |
| VERIFIED | Yes |
| TOTAL WORKS | 1 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 1 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2021 |
| LATEST PUBLICATION YEAR | 2021 |
| H-INDEX | 0 |
The Truth behind the Zeros
Psychiatric syndromes in dementia are often derived from the Neuropsychiatric Inventory (NPI) using principal component analysis (PCA). The validity of this statistical approach can be questioned, since the excessive proportion of zeros and skewness of NPI items may distort the estimated relations between the items. We propose a novel version of PCA, ZIBP-PCA, where a zero-inflated bivariate Poisson (ZIBP) distribution models the pairwise covaria…
No prominent works on this page.
The Truth behind the Zeros
Psychiatric syndromes in dementia are often derived from the Neuropsychiatric Inventory (NPI) using principal component analysis (PCA). The validity of this statistical approach can be questioned, since the excessive proportion of zeros and skewness of NPI items may distort the estimated relations between the items. We propose a novel version of PCA, ZIBP-PCA, where a zero-inflated bivariate Poisson (ZIBP) distribution models the pairwise covaria…
Anxiety (1 work) · Cognitive psychology (1 work) · Dementia (1 work) · Dementia and Cognitive Impairment Research (1 work) · Econometrics (1 work) · Internal Medicine (1 work) · Internal Medicine (1 work) · Irritability (1 work) · Mathematics (1 work) · Medicine (1 work)