Examples of org.apache.mahout.cf.taste.impl.common.FixedRunningAverage

Package org.apache.mahout.cf.taste.impl.common

Examples of org.apache.mahout.cf.taste.impl.common.FixedRunningAverage

org.apache.mahout.cf.taste.impl.common.FixedRunningAverage

A simple class that represents a fixed value of an average and count. This is useful when an API needs to return {@link RunningAverage} but is not in a position to acceptupdates to it.

      log.debug("Executing SQL query: {}", getAverageItemPrefSQL);
      rs = stmt.executeQuery();
      if (rs.next()) {
        int count = rs.getInt(1);
        if (count > 0) {
          return new FixedRunningAverage(rs.getDouble(2), count);
        }
      }
      return null;
    } catch (SQLException sqle) {
      log.warn("Exception while retrieving average item pref", sqle);

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      log.debug("Executing SQL query: {}", getAverageItemPrefSQL);
      rs = stmt.executeQuery();
      if (rs.next()) {
        int count = rs.getInt(1);
        if (count > 0) {
          return new FixedRunningAverage(rs.getDouble(2), count);
        }
      }
      return null;
    } catch (SQLException sqle) {
      log.warn("Exception while retrieving average item pref", sqle);

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      log.debug("Executing SQL query: {}", getAverageItemPrefSQL);
      rs = stmt.executeQuery();
      if (rs.next()) {
        int count = rs.getInt(1);
        if (count > 0) {
          return new FixedRunningAverage(rs.getDouble(2), count);
        }
      }
      return null;
    } catch (SQLException sqle) {
      log.warn("Exception while retrieving average item pref", sqle);

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