Lisa's notes: musings on daily life, work, study, personal growth, and casual reflections.
The article explains why adding a method directly to an existing Java interface can break all classes that already implement it and demonstrates the correct approach of creating a new interface that extends the original, preserving compatibility.
The article explains the Stage‑Gate System (SGS) and its IPD‑based implementation, detailing its core concepts, the distinction between "doing the right project" and "doing the project right", and the four foundational ideas that make the process flexible, reusable, and structured for effective product development.
This note explains how Java interfaces define new data types, how variables of an interface type must reference objects implementing that interface, and demonstrates the concept with a concrete example that casts objects to a Compare interface to select the larger one.
This article reviews the evolution of deep learning, its key concepts, model architectures, training strategies, and applications—especially in speech, vision, and natural language processing—highlighting seminal research, comparative analyses, and current challenges for future AI development.
The article explains PACE—Product and Cycle‑time Excellence—originating from PRTM in 1986, outlines its seven core principles, details its seven‑factor system of four project‑level and three cross‑project elements, and shows how the framework guides structured, collaborative product development within IPD.
This article explains how deep learning models such as RNN, LSTM, GRU and Transformer enable NLP tasks like machine translation, text classification, question answering and text generation, outlines their advantages over traditional methods, and provides a Keras code example for text classification.
This article examines the distinction between project and product managers, outlines the high‑standard qualities required of product managers, describes the ideal career pathways and ability models, and details a resource‑pool framework for systematically developing product‑manager talent within an IPD‑driven R&D organization.
This tutorial walks through Java interface basics, showing how to declare an interface, implement it in classes, handle method and constant conflicts when implementing multiple interfaces, and demonstrates the concepts with concrete Rectangle and Circle examples.
The article outlines the distinct qualifications of project and product managers, compares their required abilities, and provides a step‑by‑step guide—including mindset shifts and systematic product knowledge learning—for project managers aiming to become product managers.
This article reviews the evolution of pre‑trained models in natural language processing, from early word embeddings to Transformer‑based architectures like BERT and its variants, outlines their wide‑range applications such as QA, translation, and dialogue, and discusses remaining challenges and future research directions.
