void relevance_destroy(struct relevance **rp);
void relevance_newrec(struct relevance *r, struct record_cluster *cluster);
void relevance_countwords(struct relevance *r, struct record_cluster *cluster,
void relevance_destroy(struct relevance **rp);
void relevance_newrec(struct relevance *r, struct record_cluster *cluster);
void relevance_countwords(struct relevance *r, struct record_cluster *cluster,