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EITCA Academy

EITCA Academy

The European Information Technologies Certification Institute - EITCI ASBL

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EITCI Institute ASBL

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Questions and answers designated by tag: Data Quality

Why is machine learning still weak with streamed data (for example, trading)? Is it because of data (not enough diversity to get the patterns) or too much noise?

Wednesday, 25 February 2026 by razvansavin88

Machine learning's comparatively limited effectiveness with streamed data, particularly in high-frequency and financial trading contexts, derives from a combination of inherent data characteristics and structural limitations of current machine learning paradigms. Two central challenges are the nature of the data itself—specifically its high noise content and non-stationarity—and the technical demands of real-time adaptation and generalization

  • Published in Artificial Intelligence, EITC/AI/GCML Google Cloud Machine Learning, Introduction, What is machine learning
Tagged under: Artificial Intelligence, Concept Drift, Data Quality, Financial Trading, Machine Learning, Noise, Non-Stationarity, Online Learning, Prediction Limits, Real-Time Systems, Streamed Data

In order to train algorithms, what is the most important: data quality or data quantity?

Monday, 06 October 2025 by Nadia BENYAHIA

The question of whether data quality or data quantity holds greater importance in training algorithms is central to the practice of machine learning. Both factors significantly influence model performance, but their relative importance varies depending on the context, the type of algorithm, and the application domain. To provide a comprehensive and factual perspective, it is

  • Published in Artificial Intelligence, EITC/AI/GCML Google Cloud Machine Learning, First steps in Machine Learning, The 7 steps of machine learning
Tagged under: Artificial Intelligence, Data Preparation, Data Quality, Data Quantity, Machine Learning, Model Training

What are the main challenges encountered during the data preprocessing step in machine learning, and how can addressing these challenges improve the effectiveness of a model?

Saturday, 26 April 2025 by Mohammed Khaled

The data preprocessing step in machine learning is a critical phase that significantly impacts the performance and effectiveness of a model. It involves transforming raw data into a clean and usable format, ensuring that the machine learning algorithms can process the data effectively. Addressing the challenges encountered during this step can lead to improved model

  • Published in Artificial Intelligence, EITC/AI/GCML Google Cloud Machine Learning, First steps in Machine Learning, Plain and simple estimators
Tagged under: Artificial Intelligence, Data Imbalance, Data Integration, Data Preprocessing, Data Quality, Feature Engineering

What are the limitations in working with large datasets in machine learning?

Wednesday, 24 April 2024 by Monica Tran

When dealing with large datasets in machine learning, there are several limitations that need to be considered to ensure the efficiency and effectiveness of the models being developed. These limitations can arise from various aspects such as computational resources, memory constraints, data quality, and model complexity. One of the primary limitations of installing large datasets

  • Published in Artificial Intelligence, EITC/AI/GCML Google Cloud Machine Learning, Advancing in Machine Learning, GCP BigQuery and open datasets
Tagged under: Artificial Intelligence, Data Quality, Machine Learning, Memory Constraints, Model Complexity, Scalability

Can machine learning predict or determine the quality of the data used?

Friday, 05 January 2024 by Alex Cubells

Machine Learning, a subfield of Artificial Intelligence, has the capability to predict or determine the quality of the data used. This is achieved through various techniques and algorithms that enable machines to learn from the data and make informed predictions or assessments. In the context of Google Cloud Machine Learning, these techniques are applied to

  • Published in Artificial Intelligence, EITC/AI/GCML Google Cloud Machine Learning, Introduction, What is machine learning
Tagged under: Artificial Intelligence, Data Quality, Google Cloud, Machine Learning, Supervised Learning, Unsupervised Learning

What are some of the challenges faced in predicting extreme weather events accurately?

Sunday, 06 August 2023 by EITCA Academy

Predicting extreme weather events accurately is a challenging task that requires the utilization of advanced techniques such as deep learning. While deep learning models, such as those implemented using TensorFlow, have shown promising results in weather prediction, there are several challenges that need to be addressed to improve the accuracy of these predictions. One of

  • Published in Artificial Intelligence, EITC/AI/TFF TensorFlow Fundamentals, TensorFlow Applications, Utilizing deep learning to predict extreme weather, Examination review
Tagged under: Artificial Intelligence, Computational Complexity, Data Quality, Deep Learning, TensorFlow, Weather Prediction

How does TFX help investigate data quality within pipelines, and what components and tools are available for this purpose?

Sunday, 06 August 2023 by EITCA Academy

TFX, or TensorFlow Extended, is a powerful framework that helps investigate data quality within pipelines in the field of Artificial Intelligence. It provides a range of components and tools specifically designed to address this purpose. In this answer, we will explore how TFX assists in investigating data quality and discuss the various components and tools

  • Published in Artificial Intelligence, EITC/AI/TFF TensorFlow Fundamentals, TensorFlow Extended (TFX), Model understanding and business reality, Examination review
Tagged under: Artificial Intelligence, Components, Data Quality, Investigation, TensorFlow Extended, TFX, Tools

How can data scientists document their datasets effectively on Kaggle, and what are some of the key elements of dataset documentation?

Wednesday, 02 August 2023 by EITCA Academy

Data scientists can effectively document their datasets on Kaggle by following a set of key elements for dataset documentation. Proper documentation is important as it helps other data scientists understand the dataset, its structure, and its potential uses. This answer will provide a detailed explanation of the key elements of dataset documentation on Kaggle. 1.

  • Published in Artificial Intelligence, EITC/AI/GCML Google Cloud Machine Learning, Advancing in Machine Learning, Data science project with Kaggle, Examination review
Tagged under: Artificial Intelligence, Data Preparation, Data Quality, Data Science, Dataset Documentation, Exploratory Data Analysis

How can data preparation save time and effort in the machine learning process?

Wednesday, 02 August 2023 by EITCA Academy

Data preparation plays a important role in the machine learning process, as it can significantly save time and effort by ensuring that the data used for training models is of high quality, relevant, and properly formatted. In this answer, we will explore how data preparation can achieve these benefits, focusing on its impact on data

  • Published in Artificial Intelligence, EITC/AI/GCML Google Cloud Machine Learning, Google tools for Machine Learning, Google machine learning overview, Examination review
Tagged under: Artificial Intelligence, Data Preparation, Data Quality, Feature Engineering, Machine Learning, Model Performance

What is the first step in the process of machine learning?

Wednesday, 02 August 2023 by EITCA Academy

The first step in the process of machine learning is to define the problem and gather the necessary data. This initial step is important as it sets the foundation for the entire machine learning pipeline. By clearly defining the problem at hand, we can determine the type of machine learning algorithm to use and the

  • Published in Artificial Intelligence, EITC/AI/GCML Google Cloud Machine Learning, First steps in Machine Learning, The 7 steps of machine learning, Examination review
Tagged under: Artificial Intelligence, Data Gathering, Data Quality, Data Representation, Machine Learning, Problem Definition
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The European IT Certification framework has been established in 2008 as a Europe based and vendor independent standard in widely accessible online certification of digital skills and competencies in many areas of professional digital specializations. The EITC framework is governed by the European IT Certification Institute (EITCI), a non-profit certification authority supporting information society growth and bridging the digital skills gap in the EU.
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