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In addition to considering the influence of time information on the historical data, you should also consider the impact on the prediction formula.
A R (u) is a recommendation list which based on user ratings in the training set, T (u) is a list of user behavior in the test set, and the recommendation result accuracy is defined as: We use part of Netflix data set as our experimental data sets, including 10,000 ratings and ratings time 1230 independent users of the 1682 movie.
In: SIAM Data Mining (SDM'05), Newport Beach, California, April 21-23, 2005 [2] R.
A recent-biased dimension reduction technique for time series data.
In Advances in Knowledge Discovery and Data Mining: 9th Pacific-Asia Conference, PAKDD 2005, volume 3518 / 2005.

That 20 year lifetime goal is itself a reduction from the earlier 30 year lifetime design goal [6].
Combining analysis results with experimental data and engineering know-how lead to higher efficiencies and improved product reliability.
Data from its validated models can be used to analyze the interaction of bearings and rotating elements within a turbine’s housing.
It also exports design-specific bearing data back to system models, so modifications and trade-offs can be made as needed.
Data from its validated models can be used to analyze the interaction of bearings and rotating elements within a turbine’s housing.

The microbial ferrous oxidation rate at each dilution rate was determined from the knowledge of O2, CO2 utilisation rates using the degree-of-reduction balance [14] and also from a ferrous iron mass balance over the reactor.
Also included are the data from a previous study with the same total iron concentrations, but all with only ferrous and no ferric in the feed [1, 3].
Analysis of the present data, given in Table 1 shows that the maintenance coefficient is small or negative, which is consistent with actively growing continuous culture which is not substrate limited and where there no wall growth, as shown in previous studies [1, 3].
It can also be seen, from both Figure 3 and Table 1, that the yield data does not follow a strictly linear trend, since the value of the yield coefficient max2 XFeY + is not strictly a constant, but itself a function of DrFe +2 or of total iron concentration.
This remains under investigation. 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 0 5 10 15 20 25 30 Biomass, Cx [mmol C/L] [Fe3+] [g/L] 5 g/L Total Fe 12 g/L Total Fe 20 g/L Total Fe 25 g/L Total Fe 5g/L Ferrous" 5g/L Ferrous + 7g/L Ferric 5g/L Ferrous + 15g/L Ferric 5g/L Ferrous + 20g/L Ferric 0 5 10 15 20 25 30 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 Rate of ferrous-iron oxidation (mmol L-1 h-1) Dilution rate (h-1) 5g/l Ferrous (Ojumu, 2008) 12g/l Ferrous (Ojumu, 2008) 20g/l Ferrous (Ojumu, 2008) 25g/l Ferrous (Ojumu, 2008) 5g/l Ferrous 5g/l ferrous+7g/l ferric 5g/l ferrous+15g/l ferric 5g/l Ferous+20g/l ferric 0.0000 0.5000 1.0000 1.5000 2.0000 2.5000 3.0000 3.5000 0 5 10 15 20 25 CX (mmol C/L) g/L Partially oxidized feed data from Table 1 Pure ferrous feed data from Table 1 DrFe +2 Figure 2.

The reduction of wear resistance due to hardness degradation of the tools at high cutting speeds is typically minimized by use of liquid coolants.
Results and their discussion Data for coefficient of friction and mechanical properties of the composites studied are illustrated in Figs. 3 – 7.
Jaworska for the data.
Remark: diamonds –data for composite obtained via homogenization for 5.5 hours; squares – data for composite obtained via homogenization for 2 hours.
Remark: diamonds –data for composite obtained via homogenization for 5.5 hours; squares – data for composite obtained via homogenization for 2 hours.

Based on research of index system of evaluation on ecological cities of China currently, Chinese scholars have problems in research of index system of evaluation on ecological cities such as over-sized designed index system, much difficulty in index quantification, weight allocation and data acquisition and low compatibility of index.
Thus, this article, based on sample of data of Ha'erbin between 2002 and 2008, carries out calculation with SPSS statistics software so as to get weight, characteristic vector and scores of principal components of each sub-system to conduct quantitative evaluation on construction of ecological city of Ha'erbin.
Evaluation on construction of each sub-system of ecological system of Ha'erbin (1) Standardization of original data and analysis of relevance of data.
Thus, this article, based on sample of data of Ha'erbin between 2002 and 2008, carries out calculation with SPSS statistics software so as to get weight, characteristic vector and scores of principal components of each sub-system to conduct quantitative evaluation on construction of ecological city of Ha'erbin
Calculation of characteristic values, contribution rate and accumulative contribution rate of data R of three sub-system will be made with SPSS statistics software.

These data forms two series: LL ,,,, 21 ixxx and LL ,,,, 21 iyyy . ix is the vibration amplitude of the rotor in X direction at the ith moment.
We plot the X (or Y) data to time on the coordinate plate and the onedimensional time-vibration waves is obtained.
Let the first m data in the series ( )mxxx ,,, 21 L be the first vector 1X in the M-dimensional Space.
None-scale area and the slope of the curve of ))(( εNLog and )1( εLog Fractal Characteristics of Shaft Center Orbit When the vibration data in direction X and Y are combined together, we take the measurements at moment i (xi, yi) as the coordinates of point i.
These vibration data are not until to alarm values.

It provides on-line data of the actual status of the cone cup forming resulting from the applied, constant pressure.
The acquired data pool is used for the optimisation of industrial SPF processes.
Starting from the on-line data acquisition it is possible to calculate the variation of strain rate during the test.
Starting from preliminary tensile test data for the new material or the lot to be investigated, a test matrix is compiled.
Figure 5: Cone-cup test results The process data are transferred to feasibility samples.

Design of teaching resources library The design of the teaching resources library and the process of building the resources data is significant content to operate software development.
The database design means designing the structure of the relative data sheet then satisfy the requirement of data management and storage.
The resource management platform maintains system users, basic resource and data.
During the resource type configuration, the configuration table is data, and Insert sentences are implemented.
(4)Judge the type of data return value.

In their studies, the experimental data were described reasonably well by the Langmuir isotherm and unexpanded perlite gave better results than the expanded one.
The equilibrium data was then tested with the Langmuir isotherm model.
Since the experimental data fits quite well to a straight line, it was concluded that the adsorption follows the Langmuir model.
Fig.3 shows the Langmuir fit of the equilibrium benzene adsorption data by A-EP.
The adsorption data was fitted to the Langmuir isotherm model which gave a good regression (R) value.

Specific sensor interface electronics has been developed and coupled with a universal, sensor invariant, network interface with common core system software, user interface and data protocols [2].
These are based around a low-power microcontroller that can have software loaded into it for particular sensors and which offers significant scope for on-sensor/interface data manipulation and storage.
The network of sensors can then be managed by a network controller, such as an embedded PC, to continually gather data on the state of the structure that it is deployed in.
The data will be used for through-life management of the aluminium-hulled boat and will inform future Defence acquisitions.
An increased focus is being placed on the implementation of prognostics and health management in autonomous logistics systems including the manipulation and management of large data sets and potential data fusion.