Qiwei He
Biographic Data
| ID | 3915401 |
|---|---|
| NAME | Qiwei He |
| GIVEN NAMES | Qiwei |
| FAMILY NAME | He |
| SIGNATURE | HE Q |
| AFFILIATIONS | Vanke (China) |
| ORCID | 0000-0003-1410-3839 |
| VERIFIED | Yes |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2015 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
Understanding Adults’ Spatial Cognitive Processes: A Time-Embedded N-Grams Model with Machine Learning
Technological advances have transformed the landscape of educational assessments, particularly in how we collect and analyze data on individuals’ cognitive processes and interactions with assessment items. The rich data recorded in log files during human–machine interactions are often referred to as process data. This study uses sequential process data from the 2012 Program for the International Assessment of Adult Competencies (PIAAC), focusing …
From exploration to efficiency: Using hidden Markov models to uncover adults’ strategy use on a digital problem-solving task
Adults developing literacy skills often struggle to coordinate tools in digital environments, yet how they navigate digital tasks is not well understood. This study uses PIAAC process data to model navigation on a complex digital problem-solving item. Hidden Markov models identified latent strategy states and transition probabilities by literacy level (developing vs. higher) and by item accuracy. Patterns observed in the higher literacy group inc…
State Power Attracts Talent: Evidence From China’s Civil Servant Fever
Why are government jobs so attractive to talented individuals in many non-democratic countries? We identify state power as a key factor. We analyze the impact of China’s recent value-added tax reform, an expansion of taxation power, on citizens’ preferences for tax administration positions, as revealed by participation in the National Civil Service Exam. Using a difference-in-differences approach that leverages pre-reform subnational variation in…
Broad range lipidomics and metabolomics coupled with 16S rRNA sequencing to reveal the mechanisms of Huangkui Capsule against cisplatin-induced nephrotoxicity
Does armed conflict lead to lower prevalence of maternal health-seeking behaviours: Theoretical and empirical research based on 55 683 women in armed conflict settings
BACKGROUND: Women and children bear a substantial burden of morbidity and mortality due to armed conflict. Life-saving maternal and child health (MCH) services are low-quality in most conflict-affected regions. Previous studies on armed conflict and MCH services have been mostly cross-sectional, and a causal relationship between armed conflict and MCH services utilisation cannot be inferred. METHODS: First, we constructed a utility equation for m…
Clustering sequential navigation patterns in multiple‐source reading tasks with dynamic time warping method
How enlightened self-interest guided global vaccine sharing benefits all: A modeling study
Background: Despite consensus that vaccines play an important role in combatting the global spread of infectious diseases, vaccine inequity is still a prevalent issue due to a deep-seated mentality of self-priority. We aimed to evaluate the existence and possible outcomes of a more equitable global vaccine distribution and explore a concrete incentive mechanism that promotes vaccine equity. Methods: We designed a metapopulation epidemiological mo…
Factors associated with age-specific maternal health-seeking behaviours among women: A Multiple Indicator Cluster Survey-based study in 10 African countries
Background: Maternal health-seeking behaviours (MHSB) are crucial for maintaining maternal health and reducing the maternal mortality ratio (MMR). However, little is known about age-specific MHSB in African countries. This study aims to examine the association between composite indicators of maternal characteristics, household conditions, and socioeconomic factors with MHSB among women from different childbearing age groups in 10 African countrie…
Maternal Health-Seeking Behavior and Associated Factors in the Democratic Republic of the Congo
Maternal health-seeking behavior (MHSB) is crucial for maternal health. However, little is known about MHSB in the Democratic Republic of the Congo (DRC). This study aims to evaluate the situation and socioeconomic associates of MHSB in the DRC. Based on the responses of 8,360 participants in a nationally representative survey, we adopted a K-modes cluster analysis algorithm to categorize women into three groups (i.e., infrequent service-users, p…
Leveraging process data to assess adults’ problem-solving skills: Using sequence mining to identify behavioral patterns across digital tasks
Exploring latent states of problem‐solving competence using hidden Markov model on process data
The response process of problem‐solving items contains rich information about respondents' behaviours and cognitive process in the digital tasks, while the information extraction is a big challenge. The aim of the study is to use a data‐driven approach to explore the latent states and state transitions underlying problem‐solving process to reflect test‐takers' behavioural patterns, and to investigate how these states and state transitions could b…
Socio-economic inequalities in children’s nutritional status in Democratic Republic of the Congo in 2017–2018: An analysis of data from a nationally representative survey
Objective: The Democratic Republic of the Congo (DRC) has one of the highest levels of child undernutrition globally; however, little information exists on the underlying socio-economic inequalities resulting in undernutrition. This study aims to examine the differences in the nutritional statuses of children across different wealth quintiles and explores the association between malnutrition in children and related factors. Design: We utilised th…
Selecting Testlet Features With Predictive Value for the Testlet Effect: An Empirical Study
High-stakes tests often consist of sets of questions (i.e., items) grouped around a common stimulus. Such groupings of items are often called testlets. A basic assumption of item response theory (IRT), the mathematical model commonly used in the analysis of test data, is that individual items are independent of one another. The potential dependency among items within a testlet is often ignored in practice. In this study, a technique called tree-b…
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Selecting Testlet Features With Predictive Value for the Testlet Effect: An Empirical Study
High-stakes tests often consist of sets of questions (i.e., items) grouped around a common stimulus. Such groupings of items are often called testlets. A basic assumption of item response theory (IRT), the mathematical model commonly used in the analysis of test data, is that individual items are independent of one another. The potential dependency among items within a testlet is often ignored in practice. In this study, a technique called tree-b…
Maternal Health-Seeking Behavior and Associated Factors in the Democratic Republic of the Congo
Maternal health-seeking behavior (MHSB) is crucial for maternal health. However, little is known about MHSB in the Democratic Republic of the Congo (DRC). This study aims to evaluate the situation and socioeconomic associates of MHSB in the DRC. Based on the responses of 8,360 participants in a nationally representative survey, we adopted a K-modes cluster analysis algorithm to categorize women into three groups (i.e., infrequent service-users, p…
Leveraging process data to assess adults’ problem-solving skills: Using sequence mining to identify behavioral patterns across digital tasks
Exploring latent states of problem‐solving competence using hidden Markov model on process data
The response process of problem‐solving items contains rich information about respondents' behaviours and cognitive process in the digital tasks, while the information extraction is a big challenge. The aim of the study is to use a data‐driven approach to explore the latent states and state transitions underlying problem‐solving process to reflect test‐takers' behavioural patterns, and to investigate how these states and state transitions could b…
Socio-economic inequalities in children’s nutritional status in Democratic Republic of the Congo in 2017–2018: An analysis of data from a nationally representative survey
Objective: The Democratic Republic of the Congo (DRC) has one of the highest levels of child undernutrition globally; however, little information exists on the underlying socio-economic inequalities resulting in undernutrition. This study aims to examine the differences in the nutritional statuses of children across different wealth quintiles and explores the association between malnutrition in children and related factors. Design: We utilised th…
Factors associated with age-specific maternal health-seeking behaviours among women: A Multiple Indicator Cluster Survey-based study in 10 African countries
Background: Maternal health-seeking behaviours (MHSB) are crucial for maintaining maternal health and reducing the maternal mortality ratio (MMR). However, little is known about age-specific MHSB in African countries. This study aims to examine the association between composite indicators of maternal characteristics, household conditions, and socioeconomic factors with MHSB among women from different childbearing age groups in 10 African countrie…
Does armed conflict lead to lower prevalence of maternal health-seeking behaviours: Theoretical and empirical research based on 55 683 women in armed conflict settings
BACKGROUND: Women and children bear a substantial burden of morbidity and mortality due to armed conflict. Life-saving maternal and child health (MCH) services are low-quality in most conflict-affected regions. Previous studies on armed conflict and MCH services have been mostly cross-sectional, and a causal relationship between armed conflict and MCH services utilisation cannot be inferred. METHODS: First, we constructed a utility equation for m…
Clustering sequential navigation patterns in multiple‐source reading tasks with dynamic time warping method
How enlightened self-interest guided global vaccine sharing benefits all: A modeling study
Background: Despite consensus that vaccines play an important role in combatting the global spread of infectious diseases, vaccine inequity is still a prevalent issue due to a deep-seated mentality of self-priority. We aimed to evaluate the existence and possible outcomes of a more equitable global vaccine distribution and explore a concrete incentive mechanism that promotes vaccine equity. Methods: We designed a metapopulation epidemiological mo…
Broad range lipidomics and metabolomics coupled with 16S rRNA sequencing to reveal the mechanisms of Huangkui Capsule against cisplatin-induced nephrotoxicity
Understanding Adults’ Spatial Cognitive Processes: A Time-Embedded N-Grams Model with Machine Learning
Technological advances have transformed the landscape of educational assessments, particularly in how we collect and analyze data on individuals’ cognitive processes and interactions with assessment items. The rich data recorded in log files during human–machine interactions are often referred to as process data. This study uses sequential process data from the 2012 Program for the International Assessment of Adult Competencies (PIAAC), focusing …
From exploration to efficiency: Using hidden Markov models to uncover adults’ strategy use on a digital problem-solving task
Adults developing literacy skills often struggle to coordinate tools in digital environments, yet how they navigate digital tasks is not well understood. This study uses PIAAC process data to model navigation on a complex digital problem-solving item. Hidden Markov models identified latent strategy states and transition probabilities by literacy level (developing vs. higher) and by item accuracy. Patterns observed in the higher literacy group inc…
State Power Attracts Talent: Evidence From China’s Civil Servant Fever
Why are government jobs so attractive to talented individuals in many non-democratic countries? We identify state power as a key factor. We analyze the impact of China’s recent value-added tax reform, an expansion of taxation power, on citizens’ preferences for tax administration positions, as revealed by participation in the National Civil Service Exam. Using a difference-in-differences approach that leverages pre-reform subnational variation in…
Medicine (5 works) · Artificial Intelligence (4 works) · Computer Science (4 works) · Environmental health (4 works) · Global Maternal and Child Health (4 works) · Psychology (4 works) · Child Nutrition and Water Access (3 works) · Demography (3 works) · Political science (3 works) · Biology (2 works)