推荐的

However, the recommender system still faces a series of challenges. Thereby, research on recommendation system is of most realistic significance.

然而，推荐系统也面临着一系列的挑战，所以对推荐系统的研究具有非常重要的现实意义。

In order to make the problems solved and improve the quality and efficient of recommender systems, some researches have been done, and the research results have been successfully applied in practice.

为了迎接这种挑战，提高推荐系统的推荐质量和实时性，目前国内外进行了较多的研究，其成果也在实际中得到了一定的应用。

Collaborative filtering is the most successful recommender system technology to date. It has been shown to produce high quality recommendations, but the performance degrades with the number of customers and products.

协同过滤是迄今为止最成功的推荐系统，它可以产生高质量的推荐，但是其性能随着客户和产品数目的增加而下降。

When at home he loves relaxing with a good book; if he had to recommend one, he would have no hesitation in choosing Nicholas Evans'"The Horse Whisperer".

当他在家的时候，他喜欢看好书放松，如果要他推荐一本的话，他会毫不迟疑的推荐尼可拉斯。伊文斯的《马语者》。

Com and National Library of China , this paper compares them from six aspects : useful , usable , desirable , findable , accessible and credible .

本文通过对豆瓣网和中国国家图书馆的网上书目推荐服务的调查，从有用性，易用性，满意度，可找到性，普及性和可靠性六个方面对它们进行了比较，概括了传统型网上书目推荐系统的优势和改进意见。

For the problem that the traditional Collaborative Filtering algorithms appear lower precision after clustering,a novel algorithm is proposed which employs the idiotypic immune networks to improve the CF based on user clustering.

针对传统协同过滤推荐算法进行聚类后出现的推荐精度下降问题，提出了一种利用独特型网络模型对基于用户聚类的协同过滤算法加以改进的新思路。

The proposed approach equilibrates both strength of content-based and collaborative recommendation, and satisfies all requirements from short-term to long-term recommendation.

应用高维奇异值分解，这种标签分析技术能够有效地应对社会书签中的信息不足问题和用户兴趣多样化问题，从而集中了以往基于内容推荐和协同推荐两方面的长处，可满足用户的短期和长期信息需求。

To provide personalized commodity recommendation, this paper presents a new recommendation mechanism based on multilevel customer model, which consists of data preprocessing, model learning, recommendation set generating, and intelligent filtering.

该机制借助于多级客户模型从客户的购物需求、偏爱特征和消费能力三方面捕获客户的实际需求，从而实现了一种深层次的个性化推荐，改善了推荐效果。

Number of loaded circuits DN Value Preload Method for Providing a Preload Type of guide 3 row 2.50 turns 70000 None None Ball Shaft process method Ball cage Splined portion Hollow shaft Recommended support unit on the Fixed Side type Precision None None None None Recommended support unit on the Supported Side type Types of Nuts Threading direction Spacer ball Rigidity in the axial direction None Single nut Right-hand, left-handmust be chec...

载荷钢球圈列数 DN值预压预压方法导轨型号 3列 2.50圈 70000 无无滚珠丝杠轴加工方式球保持器轴的花键部分中空轴轴承支撑座固定侧的推荐方式精密无无无无轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球轴方向刚性无单一螺帽右螺纹，左螺纹，左右螺纹无 2520.0 螺纹条数防尘措施。。。

Number of loaded circuits DN Value Preload Method for Providing a Preload Type of guide 2 row 2.50 turns 70000 None None Ball Shaft process method Ball cage Splined portion Hollow shaft Recommended support unit on the Fixed Side type Precision None None None None Recommended support unit on the Supported Side type Types of Nuts Threading direction Spacer ball Rigidity in the axial direction None Single nut Right-hand, left-handmust be chec...

载荷钢球圈列数 DN值预压预压方法导轨型号 1row 2.50圈 70000 无无滚珠丝杠轴加工方式球保持器轴的花键部分中空轴轴承支撑座固定侧的推荐方式精密无无无无轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球轴方向刚性无单一螺帽右螺纹，左螺纹，左右螺纹无 890.0 螺纹条数防尘措施。。。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。