Machine Learning Models for Skin Lesion Analysis
Expert-defined terms from the Professional Certificate in AI for Automated Skin Lesion Analysis course at LearnUNI. Free to read, free to share, paired with a globally recognised certification pathway.
**Aberration** #
**Aberration**
: A departure from the normal or expected course; in skin lesion analysis, this… #
: A departure from the normal or expected course; in skin lesion analysis, this often refers to the abnormal growth or appearance of cells.
**Accuracy** #
**Accuracy**
: The ratio of correct predictions to the total number of predictions made by a… #
: The ratio of correct predictions to the total number of predictions made by a machine learning model.
**Acoustic Microscopy** #
**Acoustic Microscopy**
: A non-invasive imaging technique that uses sound waves to visualize the intern… #
: A non-invasive imaging technique that uses sound waves to visualize the internal structure of skin lesions.
**Active Learning** #
**Active Learning**
: A semi-supervised machine learning approach where the model selects the most i… #
: A semi-supervised machine learning approach where the model selects the most informative samples for labeling, rather than having all samples labeled at once.
**Adversarial Training** #
**Adversarial Training**
: A technique used to improve the robustness of machine learning models by train… #
: A technique used to improve the robustness of machine learning models by training them on adversarial examples, or inputs specifically designed to fool the model.
**Algorithm** #
**Algorithm**
: A set of rules or instructions for solving a problem, often used in the contex… #
: A set of rules or instructions for solving a problem, often used in the context of machine learning to refer to the specific method used to train a model.
**Anomaly Detection** #
**Anomaly Detection**
: The process of identifying data points that differ significantly from the rest… #
: The process of identifying data points that differ significantly from the rest of the dataset, often used in skin lesion analysis to detect malignant lesions.
**Artificial Intelligence (AI)** #
**Artificial Intelligence (AI)**
: A broad field encompassing the development of intelligent machines that can pe… #
: A broad field encompassing the development of intelligent machines that can perform tasks that typically require human intelligence.
**Artifacts** #
**Artifacts**
: Features in an image that are not part of the actual object being imaged, ofte… #
: Features in an image that are not part of the actual object being imaged, often caused by technical limitations or errors in the imaging process.
**Aspect Ratio** #
**Aspect Ratio**
: The ratio of the width to the height of an image or object #
: The ratio of the width to the height of an image or object.
**Assurance** #
**Assurance**
: The level of confidence in the accuracy and reliability of a machine learning… #
: The level of confidence in the accuracy and reliability of a machine learning model.
**Automated Skin Lesion Analysis** #
**Automated Skin Lesion Analysis**
: The use of machine learning and computer vision techniques to analyze images o… #
: The use of machine learning and computer vision techniques to analyze images of skin lesions and make predictions about their malignancy.
Benign** #
Benign**
: A term used to describe a non-cancerous skin lesion #
: A term used to describe a non-cancerous skin lesion.
**Bias** #
**Bias**
: A systematic error in a machine learning model that causes it to consistently… #
: A systematic error in a machine learning model that causes it to consistently favor certain outcomes over others.
**Border Irregularity** #
**Border Irregularity**
: A characteristic of malignant skin lesions where the border is not smooth and… #
: A characteristic of malignant skin lesions where the border is not smooth and regular, often with notches or jagged edges.
**Classification** #
**Classification**
: The process of categorizing data points into distinct classes, often used in s… #
: The process of categorizing data points into distinct classes, often used in skin lesion analysis to determine whether a lesion is malignant or benign.
**Clinical Decision Support System (CDSS)** #
**Clinical Decision Support System (CDSS)**
: A system that provides healthcare professionals with evidence-based recommenda… #
: A system that provides healthcare professionals with evidence-based recommendations to assist in clinical decision-making.
**Color** #
**Color**
: A feature often used in skin lesion analysis to distinguish between different… #
: A feature often used in skin lesion analysis to distinguish between different types of lesions, as malignant lesions often have different color patterns than benign lesions.
**Computer #
Aided Diagnosis (CAD)**
: The use of computer algorithms to assist healthcare professionals in diagnosin… #
: The use of computer algorithms to assist healthcare professionals in diagnosing medical conditions.
**Convolutional Neural Network (CNN)** #
**Convolutional Neural Network (CNN)**
: A type of deep learning algorithm commonly used in image classification tasks,… #
: A type of deep learning algorithm commonly used in image classification tasks, including skin lesion analysis.
**Cross #
Validation**
: A technique used to evaluate the performance of a machine learning model by di… #
: A technique used to evaluate the performance of a machine learning model by dividing the dataset into multiple folds and training and testing the model on each fold.
Data Augmentation** #
Data Augmentation**
: A technique used to increase the size of a dataset by generating new samples t… #
: A technique used to increase the size of a dataset by generating new samples through transformations of the existing data.
**Deep Learning** #
**Deep Learning**
: A subset of machine learning that uses multi-layer neural networks to learn hi… #
: A subset of machine learning that uses multi-layer neural networks to learn hierarchical representations of data.
**Dermatology** #
**Dermatology**
: The branch of medicine concerned with the diagnosis and treatment of skin cond… #
: The branch of medicine concerned with the diagnosis and treatment of skin conditions.
**Dermoscopy** #
**Dermoscopy**
: A non-invasive imaging technique used to examine skin lesions, often used as t… #
: A non-invasive imaging technique used to examine skin lesions, often used as the primary method for collecting data in skin lesion analysis.
**Dice Coefficient** #
**Dice Coefficient**
: A metric used to evaluate the similarity between two sets, often used in segme… #
: A metric used to evaluate the similarity between two sets, often used in segmentation tasks to measure the overlap between the predicted and ground truth masks.
**Discriminative Model** #
**Discriminative Model**
: A machine learning model that learns to distinguish between different classes… #
: A machine learning model that learns to distinguish between different classes based on the input features.
Ensemble Learning** #
Ensemble Learning**
: A machine learning approach that combines the predictions of multiple models t… #
: A machine learning approach that combines the predictions of multiple models to improve accuracy and reduce overfitting.
**Excision** #
**Excision**
: The surgical removal of a skin lesion #
: The surgical removal of a skin lesion.
Feature Engineering** #
Feature Engineering**
: The process of selecting and transforming input variables to improve the perfo… #
: The process of selecting and transforming input variables to improve the performance of a machine learning model.
**Feature Extraction** #
**Feature Extraction**
: The process of automatically extracting relevant features from raw data, often… #
: The process of automatically extracting relevant features from raw data, often used in image analysis tasks.
**Focal Loss** #
**Focal Loss**
: A type of loss function used in machine learning that focuses on reducing the… #
: A type of loss function used in machine learning that focuses on reducing the loss for hard examples, or data points that are difficult to classify.
False Negative (FN)** #
False Negative (FN)**
: A prediction where the model incorrectly classifies a malignant lesion as beni… #
: A prediction where the model incorrectly classifies a malignant lesion as benign.
**False Positive (FP)** #
**False Positive (FP)**
: A prediction where the model incorrectly classifies a benign lesion as maligna… #
: A prediction where the model incorrectly classifies a benign lesion as malignant.
F1 Score** #
F1 Score**
: A harmonic mean of precision and recall, often used as a metric for evaluating… #
: A harmonic mean of precision and recall, often used as a metric for evaluating the performance of a machine learning model.
Ground Truth** #
Ground Truth**
: The true labels or values of the data points in a dataset #
: The true labels or values of the data points in a dataset.
Hyperparameter Tuning** #
Hyperparameter Tuning**
: The process of selecting the optimal values for the parameters of a machine le… #
: The process of selecting the optimal values for the parameters of a machine learning model, often done through grid search or random search.
Image Segmentation** #
Image Segmentation**
: The process of dividing an image into multiple regions or segments, often used… #
: The process of dividing an image into multiple regions or segments, often used in skin lesion analysis to separate the lesion from the surrounding skin.
**Inception Network** #
**Inception Network**
: A type of deep learning architecture that uses multiple parallel convolutional… #
: A type of deep learning architecture that uses multiple parallel convolutional filters to learn hierarchical features from images.
**Instance Segmentation** #
**Instance Segmentation**
: A type of image segmentation that labels each pixel in an image with its corre… #
: A type of image segmentation that labels each pixel in an image with its corresponding class and generates a mask for each object in the image.
K-Fold Cross-Validation** #
K-Fold Cross-Validation**
: A type of cross-validation where the dataset is divided into k folds, and the… #
: A type of cross-validation where the dataset is divided into k folds, and the model is trained and tested k times, with each fold serving as the test set once.
Lesion** #
Lesion**
: A localized area of abnormal tissue, often used to refer to skin lesions in th… #
: A localized area of abnormal tissue, often used to refer to skin lesions in the context of skin lesion analysis.
**Level Set** #
**Level Set**
: A mathematical function used in image segmentation to evolve a curve or surfac… #
: A mathematical function used in image segmentation to evolve a curve or surface towards the boundary of an object in an image.
**Loss Function** #
**Loss Function**
: A mathematical function used in machine learning to measure the difference bet… #
: A mathematical function used in machine learning to measure the difference between the predicted and actual values of the target variable.
**Machine Learning** #
**Machine Learning**
: A subset of artificial intelligence that involves training algorithms to learn… #
: A subset of artificial intelligence that involves training algorithms to learn patterns in data and make predictions or decisions based on new input.
**Malignant** #
**Malignant**
: A term used to describe a cancerous skin lesion #
: A term used to describe a cancerous skin lesion.
** Medical Subject Headings (MeSH)** #
** Medical Subject Headings (MeSH)**
: A controlled vocabulary used for indexing and searching medical literature, of… #
: A controlled vocabulary used for indexing and searching medical literature, often used in skin lesion analysis to standardize terminology and improve searchability.
**Melanin** #
**Melanin**
: A pigment found in skin cells that gives skin its color and protects it from U… #
: A pigment found in skin cells that gives skin its color and protects it from UV radiation.
**Melanocytic Nevus** #
**Melanocytic Nevus**
: A benign skin lesion characterized by the proliferation of melanocytes, often… #
: A benign skin lesion characterized by the proliferation of melanocytes, often referred to as a mole.
**Melanoma** #
**Melanoma**
: A malignant skin cancer characterized by the uncontrolled growth of melanocyte… #
: A malignant skin cancer characterized by the uncontrolled growth of melanocytes.
**Metadata** #
**Metadata**
: Data that describes other data, often used in skin lesion analysis to provide… #
: Data that describes other data, often used in skin lesion analysis to provide context and additional information about the images and labels.
**Neural Network** #
**Neural Network**
: A type of machine learning algorithm inspired by the structure and function of… #
: A type of machine learning algorithm inspired by the structure and function of the human brain, often used in deep learning.
Noise** #
Noise**
: Random variations or errors in data that can negatively impact the performance… #
: Random variations or errors in data that can negatively impact the performance of a machine learning model.
**Normalization** #
**Normalization**
: The process of scaling data to a common range or distribution, often used in m… #
: The process of scaling data to a common range or distribution, often used in machine learning to improve model performance.
Overfitting** #
Overfitting**
: A machine learning scenario where a model performs well on the training data b… #
: A machine learning scenario where a model performs well on the training data but poorly on new, unseen data due to memorization of the training data.
Precision** #
Precision**
: The ratio of true positives to the sum of true positives and false positives,… #
: The ratio of true positives to the sum of true positives and false positives, often used as a metric for evaluating the performance of a machine learning model.
**Prevalence** #
**Prevalence**
: The proportion of a population that has a particular characteristic or conditi… #
: The proportion of a population that has a particular characteristic or condition, often used in skin lesion analysis to estimate the prevalence of different types of skin lesions.
**Python** #
**Python**
: A popular programming language commonly used in machine learning and data scie… #
: A popular programming language commonly used in machine learning and data science.
Recall** #
Recall**
: The ratio #
: The ratio