PersonalizedRedisService.java
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package com.yoho.search.service.personalized;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.alibaba.fastjson.JSONArray;
import com.yoho.search.core.personalized.BigDataRedisOper;
/**
* Created by ginozhang on 2017/1/5.
*/
@Service
public class PersonalizedRedisService {
// 保存用户特征向量的key格式，比如 “1022102:w2v:20170103” 值是一个字符串，各个值之间用逗号分隔
private static final String USER_FEATURE_KEY_TEMPLATE = "%s:w2v:%s";
private static final String USER_ACTIVITY_FEATURE_KEY_TEMPLATE = "%s:w2v_f:%s";//活动相关的向量空间【购物车、收藏夹】
private static final String USER_GENDER_KEY= "%s:gender";
@Autowired
private BigDataRedisOper<?,?> bigDataRedisOper;
public String getUserVectorFeature(String uid, String generateDate) {
String key = String.format(USER_FEATURE_KEY_TEMPLATE, uid, generateDate);
return bigDataRedisOper.getValue(key);
}
public String getUserActivityVectorFeature(String uid, String generateDate) {
String key = String.format(USER_ACTIVITY_FEATURE_KEY_TEMPLATE, uid, generateDate);
return bigDataRedisOper.getValue(key);
}
/**
* 获取用户性别维度
* @param uid
* @param generateDate
* @return
*/
public Map<String,Float> getUserGenderFeature(String uid) {
String key = String.format(USER_GENDER_KEY, uid);
String userGenderWeightValue = bigDataRedisOper.getValue(key);
if(StringUtils.isBlank(userGenderWeightValue)){
return new HashMap<String, Float>();
}
Map<String,Float> result = new HashMap<String, Float>();
List<String> userGenderWeightList = JSONArray.parseArray(userGenderWeightValue, String.class);
for (String genderWeight : userGenderWeightList) {
String [] userGenderWeight = genderWeight.split(":");
result.put(userGenderWeight[0], Float.parseFloat(userGenderWeight[1]));
}
return result;
}
public static void main(String[] args) {
String userGenderWeightValue = "['2:0.1686046511627907', '1:0.6957364341085271', '3:0.13565891472868216']";
Map<String,Float> result = new HashMap<String, Float>();
List<String> userGenderWeightList = JSONArray.parseArray(userGenderWeightValue, String.class);
for (String genderWeight : userGenderWeightList) {
String [] userGenderWeight = genderWeight.split(":");
result.put(userGenderWeight[0], Float.parseFloat(userGenderWeight[1]));
}
for (Map.Entry<String, Float> entry : result.entrySet()) {
System.out.println(entry.getKey()+ ":" + entry.getValue());
}
}
}