MétaCan
Menu
← Back to cohort

EFFICIENT TEXT SEARCHING IN JAVA

2000· book-chapter· en· W161634281 on OpenAlexaff
Laura Werner

Bibliographic record

VenueCambridge University Press eBooks · 2000
Typebook-chapter
Languageen
FieldComputer Science
TopicSemantic Web and Ontologies
Canadian institutionsCarleton University
Fundersnot available
KeywordsJavaComputer scienceProgramming language

Abstract

fetched live from OpenAlex

T ext searching and sorting is one of the most well researched areas in computer science. It is covered in an introductory algorithms course in nearly every engineering school, and there are entire books devoted to the subject. Why then, you might ask, is it necessary to publish yet another article about searching? The answer is that most of the well-known, efficient search algorithms don't work very well in Unicode, which includes the char type in Java. Algorithms such as Knuth–Morris–Pratt and Boyer–Moore utilize tables that tell them what to do when a particular character is seen in the text being searched. That's fine for a traditional character set such as ASCII or ISO Latin-1 where there are only 128 or 256 possible characters. Java, however, uses Unicode as its character set. In Unicode, there are 65,535 distinct characters that cover all modern languages of the world, including ideographic languages such as Chinese. In general, this is good; it makes the task of developing global applications a great deal easier. However, algorithms like Boyer–Moore that rely on an array indexed by character codes are very wasteful of memory and take a long time to initialize in this environment. And it gets worse. Sorting and searching non-English text presents a number of challenges that many English speakers are not even aware of. The primary source of difficulty is accents, which have very different meanings in different languages, and sometimes even within the same language: Many accented letters, such as “é” in “cafe”, are treated as minor variants on the letter that is accented, in this case “e”. […]

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.004
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.035
Threshold uncertainty score0.117

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.004
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.002
Science and technology studies0.0010.001
Scholarly communication0.0030.007
Open science0.0020.002
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0350.024

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.023
GPT teacher head0.207
Teacher spread0.183 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreMethods

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2000
Admission routes1
Has abstractyes

Explore more

Same venueCambridge University Press eBooks→Same topicSemantic Web and Ontologies→French-language works237,207→