The traditional Collaborative Filtering has shortcoming as follows: accuracy, data sparse and cold-start.
传统的协同过滤主要存在着：精确性、数据稀疏与冷启动的问题。
These two methods are both not subject to external resource constraints and would solve the data sparse problem in some extent.
这两种方法均不受外部资源所限，能在一定程度上解决数据稀疏问题。
Collaborative filtering is a successful technology in information push, but this method has encountered data sparse, cold start and other issues.
协同过滤是目前应用较为成功的信息推送技术，但也遇到了数据稀疏性、冷启动等种种问题。
Peter Thorne, a climatologist at the Co-operative Institute for Climate and Satellites, in North Carolina, describes it as "quite a hard sell in periods that are data sparse".
北卡罗来纳州的卫星气象合作机构的气象学家PeterThorne说：“在数据稀少的时间段中，这种研究结果很难让人信服。”
The present smoothing techniques have solved the data sparse problem effectively but have not further analyzed the reasonableness for the frequency distribution of events occurring.
现有平滑技术虽然已有效地对数据稀疏问题进行了处理，但对已出现事件频率分布的合理性并没有作出有效的分析。
The present smoothing techniques deal with the data sparse problem using different discount and compensate strategy, and they have different merit or shortcoming on complexity and rationality.
现有平滑技术利用不同的折扣和补偿策略来处理数据稀疏问题，在计算复杂性与合理性方面各有其优缺点。
Population data for most of the world's 35 seahorse species is sparse.
世界上35种海马中大多数的种群数据都非常稀少。
Sparse caches are normally accessed using keys since not all of the data is available in the cache and thus queries cannot be done using the cache.
它通常使用关键字进行访问，因为缓存中并非所有的数据都能够使用，使用缓存进行查询可能无法执行。
To solve the problem of sparse data, we need more data... obviously.
为了解决数据稀缺问题，我们需要更多数据。
The data to back up the value-for-money claim are sparse.
能支援提升资金价值的说法的数据极为稀少。
Data may seem to disappear at this point since the joins through the fact table is likely more sparse in its combinations than the Cartesian Product results.
此刻数据好像消失了，因为事实表的连接似乎比笛卡尔product结果更加稀少。
The concepts of the sparse and normal lookups are fully explained in the Look up Teradata data section.
稀疏和普通查找的概念请阅读 查找 Teradata数据小节。
The trouble with all these studies is that they draw firm conclusions from sparse data.
所有这些研究的问题在于，他们确定的结论来自于寥寥无几的数据。
The last review of soil respiration studies (.pdf) took place in 1992, however, and though it found a link between temperature and respiration rates, data was relatively sparse.
上次对土壤呼吸研究的评审是在1992年，不过，虽然评审发现了气温和土壤呼吸速度之间的联系，但是数据比较少。
We perceive the shape of the heart only because our brains impose a shape on to a very sparse field of data.
我们意识到那是心形只是我们的大脑将一些零散的形状勉强凑成一个整体。
The sparse cache only stores a subset of the data and can be populated lazily.
稀疏缓存仅存储数据的子集，可以被延迟填充。
The IMF is trying to measure the problems of sectors where data do not exist or are sparse: for instance, for hedge funds, money-market funds and over-the-counter derivatives.
IMF试图衡量那些无法获得数据或很少数据的部门的问题：例如，对冲基金，货币市场基金和场外交易衍生产品。
Covering indexes allow data storage within the index itself while sparse indexes exclude documents that do not contain the missing field.
Covered索引允许在索引本身里存储数据，而Sparse索引则会排除掉不包含索引字段的文档。
With the in-depth study, however, appearing sparse data imaging, which traditional methods can not used to reconstruct a clear image.
但是随着研究深入，出现稀疏数据成像问题，无法用传统方法重建清晰图像。
Sparse Mobile Ad Hoc Networks routing protocols can provide data communications for nodes in different connected domain, which can better meet the needs of the intermittently connected applications.
稀疏移动自组网的路由协议能为位于不同连通域的节点提供数据通信，因此能够更好满足非全连通网络的应用需求。
Sparse data were available on pituitary, adrenal, and gonadal disorders.
有关垂体、肾上腺及性腺疾病的资料较少。
We introduce and motivate the main theme of the course, the setting of the problem of learning from examples as the problem of approximating a multivariate function from sparse data - the examples.
我们介绍且激发课程的主题将朝向于实例学习法的问题设定，例如稀疏值中多变量函数近似的问题。
In research, sample data were mapped to sparse feature space to prevent the loss of SVM's sparsity when the kernels were fused.
为避免在进行核融合时，支持向量机稀疏性的缺失，提出将数据映射到稀疏特征空间进行研究。
This conceptual model provides a new option for areas with sparse sediment data series at watershed outlets , and it has a great potential in assisting watershed management.
该概念性模型对于流域出口泥沙资料稀少的地区具有很高的应用价值和协助流域管理的潜力。
To treat every dimension equally and adapt to sparse data, it is necessary to partition multidimensional array.
为了等同的对待每个维，适应稀疏数据，必须对多维数组进行划分。
LPLE is better than LLE in that it gives the global coordinates of the sparse data and this isn't be resolved by the other conventional algorithm.
LPLE算法解决了传统LLE算法在源数据稀疏情况下的不能有效进行降维的问题，这也是其他传统的流形学习算法没有解决的。
Some ordinary forms of sparse matrix and the application of sparse matrix technology in astrometric and geodetic VLBI data analysis are introduced.
介绍了稀疏矩阵的四种常见形式以及稀疏矩阵技术在天测与测地VLBI数据处理中的应用。
After 3d high resolution seismic data of Yacheng 13-1 structure were inversed using restriction sparse pulse inversion, data volume of full-frequency band absolute wave impedance was gained.
利用约束稀疏脉冲反演方法对崖城13—1构造的高分辨率三维地震资料进行了反演，得到了全频带的绝对波阻抗数据体。
Based on trigram models, this paper proposes a three-step method of "word-similar word-part of speech" by incorporating the similar words and solves the problem of sparse data to a large extent.
本文利用三元模型，通过引入相似词，采取“词形-相似词-词性”三步回退的策略，比较好地缓解了数据稀疏问题。
Summary of Background data. Epidemiological data on spinal injuries and their treatment in children is sparse.
研究背景概述：儿童脊柱损伤的流行病学数据较少。
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