导航参数识别方法的风景:模型开发工作流程建议
Martijn van Noort1, Martijn Ruppert1, Joost DeJongh1
1LAP&P Consultants BV, Leiden, The Netherlands.
CPT: pharmacometrics & systems pharmacology
|May 8, 2024
概括
在药量测量模型中评估参数识别能力至关重要. 这项研究比较了四种方法,发现费舍尔信息矩阵方法 (FIMM) 在评估模型参数可识别性与现实数据方面最一致.
科学领域:
- 制药指标 (Pharmacometrics) 是一个指标.
- 系统药理 系统药理
- 数学建模的数学建模
背景情况:
- 参数识别对于强大的药量计模型开发至关重要.
- 在模型装配过程中评估可识别性可能会被数值问题所混.
- 积极的识别性评估可以防止下游建模挑战.
研究的目的:
- 为了比较四种不同的方法来评估在药量测量模型中的参数识别性.
- 通过使用常见的 PK 模型来评估这些方法的实际实用性和一致性.
- 倡导使用连续规模进行可识别性评估,而不是分类结果.
主要方法:
- 系统识别的微分代数 (DAISY)
- 灵敏度矩阵方法 (SMM) 是一种灵敏度矩阵方法.
- 别名 阿里亚辛 别名 阿里亚辛
- 费舍尔信息矩阵方法 (FIMM)
主要成果:
- 这四种方法在各种 PK 模型中的参数识别性上都达成了普遍共识.
- 费舍尔信息矩阵方法 (FIMM) 显示了结果的最高一致性.
- 发现了意想不到的识别问题,突出了主动评估的价值.
结论:
- 参数识别分析对于可靠的药量计建模至关重要.
- FIMM提供了一种可靠的方法来评估模型参数的识别性.
- 持续识别度指标比传统的分类评估提供了更实用的见解.
相关概念视频
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
51
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
51
Mechanistic Models: Compartment Models in Individual and Population Analysis
38
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
38
Typical Model Studies
356
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
356
Modeling and Similitude
262
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
262
Data Validation
161
Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
Key parameters for method validation include:
Key parameters for method validation include:
161
Modeling in Therapy
71
Modeling, a key technique in therapy, uses observational learning to help clients acquire and practice new skills by watching therapists demonstrate desired behaviors. This approach, rooted in Albert Bandura's concept of vicarious learning, plays a significant role in therapeutic interventions for various psychological conditions, including social anxiety, ADHD, and depression.
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...
71


