@Override
    public TargetRelevance classify(Page page) throws TargetClassifierException {
        if(regexMatchesTitle(page)) {
            return TargetRelevance.RELEVANT;
        } else {
            return TargetRelevance.IRRELEVANT;
        }
    }
Classify whether a page is relevant to a topic by matching a RegExp against the title.
ache/src/main/java/achecrawler/target/classifier/TitleRegexTargetClassifier.java