How does transfer learning primarily benefit deep learning models in terms of training time and data requirements?
- Increases training time
- Requires more data
- Decreases training time
- Requires less data
Transfer learning benefits deep learning models by decreasing training time and data requirements. It allows models to leverage pre-trained knowledge, saving time and reducing the need for large datasets. The model starts with knowledge from a source task and fine-tunes it for a target task, which is often faster and requires less data than training from scratch.
While training a deep neural network for a regression task, the model starts to memorize the training data. What's a suitable approach to address this issue?
- Increase the learning rate
- Add more layers to the network
- Apply dropout regularization
- Decrease the batch size
Memorization indicates overfitting. Applying dropout regularization (Option C) is a suitable approach to prevent overfitting in deep neural networks. Increasing the learning rate (Option A) can lead to convergence issues. Adding more layers (Option B) can worsen overfitting. Decreasing the batch size (Option D) may not directly address memorization.
A company wants to deploy a deep learning model in an environment with limited computational resources. What challenge related to deep learning models might they face, and what potential solution could address it?
- Overfitting due to small training datasets
- High memory and processing demands of deep models
- Lack of labeled data for training deep models
- Slow convergence of deep models due to early stopping or small batch sizes
In a resource-constrained environment, one major challenge is the high memory and processing demands of deep learning models. They can be computationally expensive. A potential solution could be model optimization techniques like quantization, pruning, or using smaller network architectures to reduce memory and processing requirements.
For applications requiring ACID transactions across multiple documents or tables, which database type would you lean towards?
- NoSQL Database
- Relational Database
- In-memory Database
- Columnar Database
In cases where ACID (Atomicity, Consistency, Isolation, Durability) transactions across multiple documents or tables are required, relational databases are typically preferred. They provide strong data consistency and support complex transactions.
The _______ typically works closely with business stakeholders to understand their requirements and translate them into data-driven insights.
- Data Scientist
- Data Analyst
- Data Engineer
- Business Analyst
Data Scientists often work closely with business stakeholders to understand their requirements and translate them into data-driven insights. They use statistical and analytical techniques to derive insights that support decision-making.
In deep learning, the technique used to skip one or more layers by connecting non-adjacent layers is called _______.
- Dropout
- Batch Normalization
- Skip Connections
- Pooling
In deep learning, the technique used to skip one or more layers by connecting non-adjacent layers is called "Skip Connections." Skip connections allow the model to bypass one or more layers and facilitate the flow of information from one layer to another, helping in the training of deep neural networks.
Which of the following tools is typically used to manage and query relational databases in Data Science?
- Excel
- Hadoop
- SQL (Structured Query Language)
- Tableau
SQL (Structured Query Language) is a standard tool used for managing and querying relational databases. Data scientists frequently use SQL to extract, manipulate, and analyze data from these databases, making it an essential skill for working with structured data.
You're working on a real estate dataset where the price of the house is significantly influenced by its age and square footage. To capture this combined effect, what type of new feature could you create?
- Interaction feature
- Categorical feature with age groups
- Time-series feature
- Ordinal feature
To capture the combined effect of age and square footage on house price, you can create an interaction feature. This feature multiplies or combines the two variables to represent their interaction, allowing the model to consider how they jointly affect the target variable. An interaction feature is valuable in regression models.
In a traditional relational database, the data stored in a tabular format is often referred to as _______ data.
- Structured Data
- Unstructured Data
- Semi-Structured Data
- Raw Data
In a traditional relational database, the data is structured and organized in tables with a predefined schema. It's commonly referred to as "Structured Data" because it adheres to a strict structure and schema.
The metric _______ is particularly useful when the cost of false positives is higher than false negatives.
- Precision
- Recall
- F1 Score
- Specificity
The metric "Precision" is particularly useful when the cost of false positives is higher than false negatives. Precision focuses on the accuracy of positive predictions, making it relevant in scenarios where minimizing false positives is critical, such as medical diagnosis or fraud detection.