/**
* Calculate Union interest between 2 AuthorInterest
*
* @param eachAuthorInterest1
* @param eachAuthorInterest2
* @return
*/
private AuthorInterest calculateUnionOfAuthorInterest(
AuthorInterest eachAuthorInterest1, AuthorInterest eachAuthorInterest2) {
AuthorInterest authorInterestResult = new AuthorInterest();
authorInterestResult.setLanguage(eachAuthorInterest1.getLanguage());
authorInterestResult.setYear(eachAuthorInterest1.getYear());
Map<Interest, Double> termsWeight1 = eachAuthorInterest1.getTermWeights();
Map<Interest, Double> termsWeight2 = eachAuthorInterest2.getTermWeights();
Map<Interest, Double> mergedTermWeight = new HashMap<Interest, Double>();
mergedTermWeight.putAll(termsWeight1);
mergedTermWeight.putAll(termsWeight2);
Map<Interest, Double> termsWeightResult = new HashMap<Interest, Double>();
for (Map.Entry<Interest, Double> eachMergedTermWeight : mergedTermWeight.entrySet()) {
Interest interstKey = eachMergedTermWeight.getKey();
if (termsWeight1.get(interstKey) != null) {
termsWeightResult.put(
interstKey, (eachMergedTermWeight.getValue() + termsWeight1.get(interstKey)) / 2);
} else {
termsWeightResult.put(interstKey, eachMergedTermWeight.getValue());
}
}
if (!termsWeightResult.isEmpty()) authorInterestResult.setTermWeights(termsWeightResult);
return authorInterestResult;
}
