freshwater_fish.int: Freshwater Fish Heavy Metal Bioaccumulation Interval Dataset

In dataSDA: Datasets and Basic Statistics for Symbolic Data Analysis

Freshwater Fish Heavy Metal Bioaccumulation Interval Dataset

Description

Interval-valued dataset of heavy metal concentrations in organs and tissues of 12 freshwater fish species, grouped into 4 feeding categories (Carnivores, Omnivores, Detritivores, Herbivores). Contains 13 interval-valued variables measuring metal concentrations in organs and organ-to-muscle ratios.

Usage

data(freshwater_fish.int)

Format

A data frame with 12 observations and 14 variables:

• body_length: Body length (cm).

• body_weight: Body weight (g).

• muscle: Metal concentration in muscle tissue.

• intestine: Metal concentration in intestine.

• stomach: Metal concentration in stomach.

• gills: Metal concentration in gills.

• liver: Metal concentration in liver.

• kidney: Metal concentration in kidney.

• liver_muscle_ratio: Liver-to-muscle concentration ratio.

• kidney_muscle_ratio: Kidney-to-muscle concentration ratio.

• gills_muscle_ratio: Gills-to-muscle concentration ratio.

• intestine_muscle_ratio: Intestine-to-muscle concentration ratio.

• stomach_muscle_ratio: Stomach-to-muscle concentration ratio.

• class: Feeding category (Carnivores, Omnivores, Detritivores, Herbivores).

Metadata

Sample size (n)	12
Variables (p)	14
Subject area	Biology
Symbolic format	Interval
Analytical tasks	Clustering

Source

https://github.com/Natandradesa/Kernel-Clustering-for-Interval-Data

References

Andrade, N. A., de Carvalho, F. A. T. and Pimentel, B. A. (2025). Kernel clustering with automatic variable weighting for interval data. Neurocomputing, 617, 128954.

Examples

data(freshwater_fish.int)

dataSDA documentation built on June 12, 2026, 9:06 a.m.