热度算法优化

community-api/src/main/java/com/tanpu/community/api/beans/qo/ThemeAnalysDO.java

@@ -49,25 +49,7 @@ public class ThemeAnalysDO {
     @ApiModelProperty(value = "用户质量")
     private Double userWeight = 0.0;
 
-    public Double getRank() {
-
-        double viewRatio = 0.1;
-        double forwardRatio = 3;
-        double commentRatio = 2;
-        double likeRation = 1;
-        double collectRatio = 3;
-        double userWeightRatio = 0.8;
-        double initialWeight = 1.0;
-        double timeRation = 0.2;
-
-        // 质量=帖子质量+用户质量
-        double w = viewCount * viewRatio + forwardCount * forwardRatio + commentCount * commentRatio
-                + likeCount * likeRation + collectCount * collectRatio
-                + Math.pow(userWeight, userWeightRatio);
-        double i = initialWeight; // 初始权重
-        double t = Double.valueOf(minuteTillNow) / 60;
-        double g = timeRation; // 时间系数
-        return (w + i) / Math.pow(t + 1, g);
-    }
+    private Double score=0.0;
+
 
 }

community-api/src/main/java/com/tanpu/community/api/beans/qo/TopicRankQo.java

@@ -40,19 +40,5 @@ public class TopicRankQo {
 
     private Integer hoursTillNow;
 
-
-    /**
-     * 热度计算算法
-     *
-     * @return
-     */
-    public Double getRank() {
-        double g = 0.3;//时间系数
-        //顶置话题
-        if (isTop > 0) {
-            return Double.MAX_VALUE;
-        }
-        Double socre = ((disscussCount * 3 + viewCount) / Math.pow(hoursTillNow + 1, g)) + themeWeight;
-        return socre;
-    }
+    private Double score;
 }

community-service/src/main/java/com/tanpu/community/service/CollectionService.java

@@ -116,7 +116,7 @@ public class CollectionService {
         if (StringUtils.isNotEmpty(lastId)) {
             CollectionEntity target = queryIncludeDelete(lastId, userId, type);
             if (target == null) return Collections.emptyList();
-            queryWrapper.lt(CollectionEntity::getCollectionType, target.getCollectionTime());
+            queryWrapper.lt(CollectionEntity::getCollectionTime, target.getCollectionTime());
         }
         if (pageSize != null) {
             queryWrapper.last("limit " + pageSize);

community-service/src/main/java/com/tanpu/community/service/RankService.java

@@ -31,23 +31,34 @@ import static com.tanpu.community.api.constants.RedisKeyConstant.CACHE_FEIGN_USE
 @Service
 public class RankService {
 
-    @Value("${rank.theme.viewRatio:0.1}")
-    public Double viewRatio;
-    @Value("${rank.theme.forwardRatio:3}")
-    public Double forwardRatio;
-    @Value("${rank.theme.commentRatio:2}")
-    public Double commentRatio;
-    @Value("${rank.theme.likeRation:3}")
-    public Double likeRation;
-    @Value("${rank.theme.collectRatio:3}")
-    public Double collectRatio;
-
-    @Value("${rank.theme.userWeightRatio:0.9}")
-    public Double userWeightRatio;
+    @Value("${rank.theme.viewRate:0.1}")
+    public Double viewRate;
+    @Value("${rank.theme.forwardRate:3}")
+    public Double forwardRate;
+    @Value("${rank.theme.commentRate:2}")
+    public Double commentRate;
+    @Value("${rank.theme.likeRaten:3}")
+    public Double likeRaten;
+    @Value("${rank.theme.collectRate:3}")
+    public Double collectRate;
+    //用户质量权重
+    @Value("${rank.theme.userWeightRate:0.9}")
+    public Double userWeightRate;
+    //初始质量
     @Value("${rank.theme.initialWeight:1.0}")
     public Double initialWeight;
-    @Value("${rank.theme.timeRation:0.2}")
-    public Double timeRation;
+    //时间系数
+    @Value("${rank.theme.timeRaten:0.2}")
+    public Double timeRate;
+
+
+    @Value("${rank.topic.viewRate:1}")
+    public Double viewRateTopic;
+    @Value("${rank.topic.discussRate:3}")
+    public Double discussRateTopic;
+    //时间系数
+    @Value("${rank.theme.timeRaten:1}")
+    public Double timeRateTopic;
 
     @Autowired
     private ThemeService themeService;
@@ -114,9 +125,11 @@ public class RankService {
                 theme.setUserWeight(authorInfo.getLevelGrade() * 1.0);
 
             }
-        }
             //打分
-        Map<ThemeAnalysDO, Double> map = themeAnalysDOS.stream().collect(Collectors.toMap(o -> o, ThemeAnalysDO::getRank));
+            this.calculateThemeScore(theme);
+        }
+        //排序
+        Map<ThemeAnalysDO, Double> map = themeAnalysDOS.stream().collect(Collectors.toMap(o -> o, ThemeAnalysDO::getScore));
         //排序
         hotestThemes = map.entrySet().stream()
                 .sorted(Map.Entry.comparingByValue(Comparator.reverseOrder()))
@@ -146,10 +159,7 @@ public class RankService {
                 topic.setViewCount(topicViewMap.getOrDefault(topic.getTopicId(), 0));
                 topic.setDisscussCount(0);
                 topic.setThemeWeight(0.0);
-                topic.setFormatViewCount(BizUtils.formatCountNumber(topic.getViewCount()));
-                topic.setFormatDisscussCount(BizUtils.formatCountNumber(topic.getDisscussCount()));
-                continue;
-            }
+            } else {
                 // 浏览量
                 Integer topicPV = topicViewMap.getOrDefault(topic.getTopicId(), 0);
                 Integer themePV = visitLogService.queryThemeVisit(themeIds);
@@ -159,14 +169,17 @@ public class RankService {
                 topic.setDisscussCount(themeIds.size() + commentCount);
                 //帖子权重，求和
                 double themeSum = getHotestThemes().stream().filter(o -> topic.getTopicId().equals(o.getTopicId()))
-                    .mapToDouble(ThemeAnalysDO::getRank)
+                        .mapToDouble(ThemeAnalysDO::getScore)
                         .sum();
                 topic.setThemeWeight(themeSum);
+            }
+            calculateTopicScore(topic);
             //格式化浏览量、讨论量
             topic.setFormatViewCount(BizUtils.formatCountNumber(topic.getViewCount()));
             topic.setFormatDisscussCount(BizUtils.formatCountNumber(topic.getDisscussCount()));
+
         }
-        Map<TopicRankQo, Double> map = topicRankQos.stream().collect(Collectors.toMap(o -> o, TopicRankQo::getRank));
+        Map<TopicRankQo, Double> map = topicRankQos.stream().collect(Collectors.toMap(o -> o, TopicRankQo::getScore));
         List<TopicRankQo> rankList = map.entrySet().stream()
                 .sorted(Map.Entry.comparingByValue(Comparator.reverseOrder()))
                 .map(Map.Entry::getKey)
@@ -234,4 +247,29 @@ public class RankService {
                 .collect(Collectors.toList());
     }
 
+
+    private void calculateThemeScore(ThemeAnalysDO theme) {
+        // 质量=帖子质量+用户质量
+        double w = theme.getViewCount() * viewRate
+                + theme.getForwardCount() * forwardRate
+                + theme.getCommentCount() * commentRate
+                + theme.getLikeCount() * likeRaten
+                + theme.getCollectCount() * collectRate
+                + Math.pow(theme.getUserWeight(), userWeightRate);
+        double t = Double.valueOf(theme.getMinuteTillNow()) / 60;
+        double score = (w + initialWeight) / Math.pow(t + 1, timeRate);
+        theme.setScore(score);
+    }
+
+
+    public void calculateTopicScore(TopicRankQo topic) {
+        //顶置话题
+        if (topic.getIsTop() > 0) {
+            topic.setScore(Double.MAX_VALUE);
+        }
+        Double socre = ((topic.getDisscussCount() * discussRateTopic + topic.getViewCount() * viewRateTopic)
+                / Math.pow(topic.getHoursTillNow() + 1, timeRateTopic))
+                + topic.getThemeWeight();
+        topic.setScore(socre);
+    }
 }

community-service/src/main/java/com/tanpu/community/service/RecommendService.java

@@ -179,9 +179,9 @@ public class RecommendService {
             if (hotStart >= hotIds.size() && newestStart >= newestIds.size() && recmdStart >= recmdIds.size()) {
                 break;
             }
-            retList.addAll(BizUtils.subList(newestIds, newestStart, newestStart + 3));
-            retList.addAll(BizUtils.subList(hotIds, hotStart, hotStart + 6));
-            retList.addAll(BizUtils.subList(recmdIds, recmdStart, recmdStart + 1));
+            retList.addAll(BizUtils.subList(newestIds, newestStart, newestStart + newRatio));
+            retList.addAll(BizUtils.subList(hotIds, hotStart, hotStart + hotRatio));
+            retList.addAll(BizUtils.subList(recmdIds, recmdStart, recmdStart + pythonRatio));
 
             round++;
         }

community-service/src/main/java/com/tanpu/community/service/ThemeService.java

@@ -222,7 +222,7 @@ public class ThemeService {
      * 查询更新节点后的用户新建主题数
      *
      * @param userIds      用户ids
-     * @param lastViewTime 更新时间节点
+     * @param lastId 更新时间节点
      * @return
      */
     public Integer queryCountFromLastId(List<String> userIds, Long lastId) {