Lisa's notes: musings on daily life, work, study, personal growth, and casual reflections.
This note explains how interfaces act as contracts in collaborative Java projects, covering everyday analogies, definition, syntax, implementation requirements, API role, and how multiple interfaces provide a form of multiple inheritance.
This article walks through the essential steps of turning raw natural language into machine‑readable numbers, covering categorical vs. numerical features, one‑hot encoding of categorical data, tokenization, building vocabularies, and using word embeddings, illustrated with an IMDB sentiment‑analysis example in Keras.
The article defines projects and products, explains project management and product management processes, compares the roles, responsibilities, and career paths of project managers and product managers, and highlights why a project manager can successfully transition into product management.
This article walks through the four core steps of Chinese NLP corpus preparation—collecting data, cleaning it with regex and encoding detection, tokenizing using dictionary‑based or statistical methods such as jieba, HMM and CRF, and finally standardizing with stop‑word removal, vocabulary building and one‑hot encoding—while illustrating each step with concrete code snippets and practical examples.
This tutorial walks through two Java examples—a simple user login verification program and a basic sensitive‑word filtering utility—explaining the problem setup, code logic, and sample outputs to illustrate input validation and string processing techniques.
The article introduces Natural Language Processing as an AI subfield, outlines its four main task categories—classification to sequence, sequence to classification, synchronous and asynchronous seq‑to‑seq—and details the typical preprocessing pipeline including corpus collection, cleaning, tokenization, stemming, lemmatization, POS tagging, NER, and chunking.
The article explains why Java's immutable String class can waste memory when concatenated, introduces the mutable StringBuilder class introduced in J2SE 5.0, demonstrates its usage with code examples comparing memory behavior, shows its length and capacity methods, and illustrates practical operations such as reverse and conversion between String and StringBuilder.
This article explains Java's immutable String class, covering three ways to instantiate strings, methods for length, concatenation (concat and +), character access, substring extraction, splitting, replacing, searching, and comparison using equals versus ==, with concrete code examples and key rules for each operation.
This guide introduces Stanford CoreNLP, a Python interface for fundamental NLP tasks such as tokenization, part‑of‑speech tagging, named‑entity recognition, constituency and dependency parsing, showing installation steps, model download links, and example outputs.
This article provides a comprehensive overview of Natural Language Processing, detailing the two main branches—Natural Language Understanding and Generation—along with their sub-modules, typical tasks, implementation approaches, a step‑by‑step NLG pipeline, and a three‑layer analysis framework covering lexical, syntactic, and semantic processing.
