关于对比树木的措施对树木空间表示的影响
Pablo A Goloboff1, Martín E Morales1
1Unidad Ejecutora Lillo (UEL, Fundación Miguel Lillo-CONICET), Miguel Lillo 251, 4000, San Miguel de Tucumán, Argentina.
概括
这项研究研究了18个距离测量如何影响"树空间"的多维缩放可视化. 不同的措施可以根据树木的分辨率和形状逆转或扭曲预期的树木排列.
科学领域:
- 人类遗传学 是一个学科.
- 计算生物学 计算生物学
- 数据可视化 数据可视化
背景情况:
- 多维缩放 (MDS) 用于可视化"树木空间"中的树木之间的关系.
- 在MDS地块中树木的排列受所选择的距离尺度的影响.
- 了解这种影响对于准确的遗传学解释至关重要.
研究的目的:
- 调查18种不同的距离测量对树木空间绘制的影响.
- 评估树的分辨率和形状如何影响它们在MDS图片中的位置.
- 识别能够产生可解释和准确可视化的距离测量.
主要方法:
- 对树的数据集应用了18种替代距离测量方法.
- 利用多维缩放来将树木投射到一个低维空间.
- 分析了与树分辨率和形状相关的模式的结果可视化.
主要成果:
- 不同的距离测量结果导致不同的树空间映射.
- 通过观察到的分辨率重新调整尺度的测量可以逆转分辨率与分辨率较低的树的预期排列.
- 树的形状显著影响放置,可能会扭曲超球形的表示.
结论:
- 测距的选择对树木空间可视化产生了重大影响.
- 一些措施导致扭曲或倒置的表示,使解释复杂化.
- 精心选择距离指标对于准确的遗传学可视化至关重要.
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