Machine Learning Supporting Virtual Reality and Brain–Computer Interface to Assess Work–Life Balance Conditions for Employees
Abstract
:1. Introduction
- At the data collection stage: ML algorithms help collect and aggregate data from a variety of sources: from employee surveys (processed from paper and electronic), Human Resources (HR) records, assessment and motivation tools (measuring and improving job performance) and wearables (health monitors, fitness monitors and others) and Internet of Things (IoR) and Industrial Internet of Things (IIoT) devices. The aforementioned data may include information on working hours, tasks, deadlines, social interactions, workload, well-being, physical activity levels and stress-related symptoms. Data can be automatically checked for accuracy (e.g., completeness, value levels, anomalies), normalized, and preprocessed using Ai/ML
- At the trait selection stage (trait vectors), identifying the mechanisms, relevant features or variables that contribute to work-related stress and work–life balance is crucial. Feature selection algorithms can help to identify the most relevant factors from the collected data, shorten the data vectors to those necessary for classification/prediction, and speed up further processing, generation of alerts and warnings, etc. In addition, processing feature vectors instead of processing entire datasets allows for data anonymization and compliance with RODO requirements.
- At the model training selection phase, once relevant features are identified, machine learning models can be trained to predict work-related stress levels or assess work–life balance. Various models, such as decision trees, random forests, support vector machines and neural networks, can be used, depending on the complexity of the problem and the nature of the data. The learned models can be periodically retrained to adapt better to the personal characteristics of a specific user.
- At the stage of anomaly detection and predictive analytics, detecting anomalies or unusual patterns in work-related stress levels or work–life balance indicators can help identify individuals or teams who may be at risk of excessive stress or work–life imbalance, and in private. Predictive models can recognize trends (unchanged, decreased, increased) in work-related stress or work–life balance levels, or predict past levels of stress and well-being based on historical data. These forecasts can help employers and employees take proactive actions to prevent burnout, improve work–life balance and improve overall well-being as part of social, branch (e.g., for medical staff) and local strategies.
- At the stage of generating personalized recommendations, by analyzing individual behaviors and preferences, ML algorithms can provide employees with personalized recommendations for better managing workload, prioritizing tasks, allocating time for relaxation and improving work–life balance, maximizing the effect of improving work–life balance in individual people as part of preventive medicine (healthy people’s medicine) and eHealth.
- At the stage of continuous improvement, ML models learn and adapt to changing work environments and individual needs. Regular updates (and replacing ML algorithms with newer, more effective ones), along with retraining models with new data, will ensure that predictions remain accurate and relevant over time. Moreover, it can be assumed that, as social awareness increases and this group of ML systems develops, the situation will improve, so systems will have to be more sensitive or aimed at a different goal: maintaining a constant level of well-being instead of restoring it.
2. Review of Literature
2.1. Data Set and Devices
2.2. Methods
3. Results
4. Brain–Computer Interfaces
5. Materials and Methods
5.1. Dataset
5.2. Used Clinimetric Scales and VR–BCI
- Perceived Stress Score (PSS10),
- Satisfaction with Life Scale (SWLS),
- Minnesota Satisfaction Questionnaire-Short Form (MSQ-SF),
5.3. Statistical Analysis
5.4. ML Methods
6. Results
7. Discussion
7.1. Potential Impacts of the Predictive Models on QoL, HRQoL and SWB
7.2. Limitations of Current and Previous Studies
- Complexity of human behavior: human behavior is complex and depends on various factors (personal, social and organizational).ML models may have difficulty accurately capturing the nuances and intricacies of human behavior because not all mechanisms and features describing it are known. Factors such as individual differences, cultural differences and external events can influence work-related stress and work–life balance in unpredictable ways.
- Data quality: the effectiveness of ML models depends largely on the quality of the data used for training. Incomplete, inaccurate or biased data (e.g., aggregated from a specific population with its characteristics) may lead to unreliable predictions. Collecting high-quality data on work-related stress and work–life balance can be challenging because it is often based on information provided by employees themselves, which may be subjective or incomplete. It is also possible to hide mental problems (e.g., depression) for fear of the consequences.
- Interpretability: Many ML models, especially complex ones (e.g., traditional or deep neural networks), lack interpretability, making it difficult to understand how the models arrive at their predictions. This lack of transparency can be troublesome, particularly in sensitive areas such as the prediction of work-related stress, where stakeholders may need to understand the reasoning behind the predictions and how they relate to individuals’ current actual behavior.
- Limited generalization: ML models trained on historical data may not generalize well to new or unexpected situations. Work environments and individual circumstances may change over time, and models may fail to adapt to these changes, leading to inaccurate predictions.
- Bias and fairness: Machine learning models can embed biases present in the data used for training, leading to unfair or discriminatory results. Data biases, such as underrepresentation of certain demographic groups or stereotypes related to gender, race, occupations, branch, location, education, etc., can result in biased predictions about work-related stress and work–life balance.
- Human expert intervention and contextual understanding: ML models can automate the prediction process to some extent, but often require human intervention to interpret results and take appropriate action. Understanding the context of work-related stress and work–life balance issues may require human expertise that cannot be fully replicated by machines.
- Ethical considerations: Predicting work-related stress and work–life balance raises ethical concerns related to privacy, consent, and potential discrimination. Employers must ensure that employee data is collected and used responsibly, with appropriate safeguards in place to protect the rights of individuals and prevent the misuse of sensitive information [63,64,65,66,67].
7.3. Directions for Further Research
- Collecting detailed, ML-enabled data, including integrating data from various sources (surveys, emails, calendars, social media, physiological sensors, and more) to gain a comprehensive understanding of individuals’ experiences.
- Longitudinal studies: tracking changes in work-related stress and work–life balance over time. This can help identify patterns, trends, and causal relationships that may not be obvious from cross-sectional data analysis.
- Causal inference: understanding the causal relationships between various factors and work-related stress or work–life balance (as association alone does not imply a cause-effect relationship) based on Bayesian causal networks or counterfactual analysis to discover the underlying mechanisms at their core.
- Personalized ML models that account for individual differences in response to stressors and work-related interventions based on transfer learning, reinforcement learning, or online learning to tailor models to individuals’ unique characteristics and preferences.
- Integrated intervention strategies: integrating ML predictions with existing and emerging intervention strategies to support employees in managing work-related stress and improving work–life balance can include the design of personalized interventions based on individual prediction results and assessing their effectiveness via using randomized trials.
- Explainable AI: further improving the interpretability and clarity of ML models for predicting work-related stress and work–life balance. This may include developing methods for generating human-readable explanations of model predictions and identifying actionable insights for stakeholders.
- Basic prevention mechanism: assessment of employee’s condition and mood;
- Cooperative work: BCIs could facilitate seamless cooperation between human workers and robots or AI systems. For example, workers could communicate their intentions directly to machines using their thoughts, enhancing coordination and efficiency;
- Customization: Industry 5.0 emphasizes the customization of products to meet individual customer needs. BCIs could allow workers to provide real-time input and adjustments to manufacturing processes, enabling rapid customization;
- Cognitive augmentation: BCIs could provide workers with cognitive augmentation, enhancing their problem-solving abilities, creativity, and decision-making skills. This could lead to more agile and adaptive production processes;
- Adaptive automation: BCIs could help adapt automation levels based on the real-time cognitive states of workers. Tasks that require human intuition and decision-making could be retained, while repetitive or physically demanding tasks could be automated;
- Responsive work environments: BCIs could contribute to creating work environments that respond to workers’ mental states. For instance, if a worker is experiencing high stress, the environment could adjust to reduce stressors;
- More efficient training: BCIs could accelerate the onboarding process for new workers by providing immediate feedback and guidance during training.
8. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Parameter | Group 1: Physiotherapists (n = 100, 100%) |
---|---|
Age [years]: | |
Mean | 28.41 |
SD | 4.22 |
Min | 21 |
Q1 | 24 |
Median | 28 |
Q3 | 31 |
Max | 34 |
Seniority [years]: | |
Mean | 4.89 |
SD | 1.87 |
Min | 1 |
Q1 | 2 |
Median | 4 |
Q3 | 7 |
Max | 10 |
Gender: | |
Female (F) | 60 (60%) |
Male (M) | 40 (40%) |
Scale | Direction of Change | Score |
---|---|---|
PSS10 | Higher score means more stress | 1–4: low 5–6: moderate 7–10: high |
SWLS | Higher score means higher quality of life | score range 5–35: 5–9 extreme dissatisfaction with life, 20—neutral, 31–35—extreme satisfaction with life |
MSQ-SF | Higher score means higher job satisfaction | 20–100 at least 50 means job satisfaction |
Scale | PSS10 | SWLS | MSQ-SF |
---|---|---|---|
Mean | 5.39 | 16.42 | 32.94 |
SD | 1.79 | 4.17 | 6.18 |
Min | 2 | 11 | 22 |
Q1 | 3 | 14 | 27 |
Median | 6 | 18 | 33 |
Q3 | 7 | 22 | 43 |
Max | 9 | 25 | 57 |
Distribution | not normal | not normal | not normal |
p-value | 0.007 | 0.004 | 0.005 |
Scale | PSS10 | SWLS | MSQ-SF |
---|---|---|---|
PSS10 | - | n.s. | n.s. |
SWLS | n.s. | - | 0.889 p = 0.002 |
MSQ-SF | n.s. | 0.878 p = 0.001 | - |
Algorithm | MicroAccuracy | MacroAccuracy | Duration |
---|---|---|---|
SdcaMaximumEntropyMulti | 0.8622 | 0.8711 | 4.3 |
FastTreeOva | 0.9005 | 0.9178 | 5.6 |
LbfgsMaximumEntropyMulti | 0.7102 | 0.7443 | 1.9 |
SdcaLogisticRegressionOva | 0.8133 | 0.8284 | 12.4 |
LbfgsLogisticRegressionOva | 0.8602 | 0.8748 | 2.3 |
FastForestOva | 0.7819 | 0.8116 | 7.2 |
LightGbmMulti | 0.8712 | 0.8983 | 1.8 |
Algorithm | MicroAccuracy | MacroAccuracy | Duration |
---|---|---|---|
LbfgsLogisticRegressionOva | 0.9223 | 0.9334 | 2.5 |
SdcaMaximumEntropyMulti | 0.8789 | 0.8955 | 2.6 |
LbfgsMaximumEntropyMulti | 0.7378 | 0.7478 | 1.9 |
Strengths | Weaknesses |
Automatization of data collection Intuitive use Individualized use 24/7 well-being monitoring and prediction IoT/smart home support ML-based analysis and prediction Built-in warnings and alerts Multipurpose use (work, fitness, care) Relatively low cost per device/machine | Limited number and quality of data sets to begin Lack of historical data sets Introduction requires educated specialists |
Opportunities | Threats |
Objectivization of work-related stress and work life balance assessment Reduced workload toward optimization Early diagnosis Preventive intervention Easier testing Novel diagnostic methods Possibility of standardization Quick further development Part of bigger systems (e.g., eHealth, smart home) | Non-acceptance of AI/ML Fear of being a part of surveillance society |
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Mikołajewski, D.; Piszcz, A.; Rojek, I.; Galas, K. Machine Learning Supporting Virtual Reality and Brain–Computer Interface to Assess Work–Life Balance Conditions for Employees. Electronics 2024, 13, 4489. https://doi.org/10.3390/electronics13224489
Mikołajewski D, Piszcz A, Rojek I, Galas K. Machine Learning Supporting Virtual Reality and Brain–Computer Interface to Assess Work–Life Balance Conditions for Employees. Electronics. 2024; 13(22):4489. https://doi.org/10.3390/electronics13224489
Chicago/Turabian StyleMikołajewski, Dariusz, Adrianna Piszcz, Izabela Rojek, and Krzysztof Galas. 2024. "Machine Learning Supporting Virtual Reality and Brain–Computer Interface to Assess Work–Life Balance Conditions for Employees" Electronics 13, no. 22: 4489. https://doi.org/10.3390/electronics13224489
APA StyleMikołajewski, D., Piszcz, A., Rojek, I., & Galas, K. (2024). Machine Learning Supporting Virtual Reality and Brain–Computer Interface to Assess Work–Life Balance Conditions for Employees. Electronics, 13(22), 4489. https://doi.org/10.3390/electronics13224489