LECTURE 2: DATA (PRE-)PROCESSING
Reasons for missing values Information is not collected (e.g., people decline to give their age and weight) Attributes may not be applicable to all cases (e.g., annual income is not applicable to children) Handling missing values Eliminate Data Objects Estimate Missing Values Ignore the Missing Value During Analysis Replace with all possible ...
Download LECTURE 2: DATA (PRE-)PROCESSING
Information
Domain:
Source:
Link to this page:
Documents from same domain
INDIAN INSTITUTE OF TECHNOLOGY, ROORKEE - …
www.iitr.ac.inIndian Institute of Technology Roorkee has its roots in the Roorkee College established in 1847 as the first engineering college in India, which was soon rechristened as Thomason College of Civil Engineering in 1854 after its greatest mentor James
CHAPTER – 3 ELECTRICAL PROTECTION SYSTEM
www.iitr.ac.inthe switching sequence for energizing or reclosing a transmission line or transformer, or because of the installation of capacitors or reactors. The application of under frequency relays may require a special study to determine the frequency variation and decay rate associated with particular system disturbances. Even if
CHAPTER – 3 HYDRAULIC TURBINE CLASSIFICATION AND …
www.iitr.ac.inThe hydraulic turbine is a mechanical device that converts the potential energy contained in an elevated body of water (a river or reservoir) into rotational mechanical energy. ... For units above 5 MW size information exchange with turbine manufacturers is recommended for turbine selection at project stage. The selection procedure is prepared ...
CHAPTER-7 circuit breaker. - IIT Roorkee
www.iitr.ac.inCHAPTER-7 HIGH VOLTAGE CIRCUIT BREAKER 7.1 Introduction Circuit breaker is a mechanical switching device capable of making, carrying and breaking current under normal circuit condition as well as under specified abnormal circuit condition such as short circuit etc.
CHAPTER- 9 HYDRO GENERATOR, CHARACTERISTICS …
www.iitr.ac.inemergency duty imposed on a generator because of power system faults. Sudden short circuit at the generator terminals: A generator should be capable of withstanding, without injury, a 30 second, 3 phase short circuit at its terminals when operating at rated MVA and power factor and at 5% over voltage, with fixed excitation.
IITR Network Connectivity User Guide For Windows OS
www.iitr.ac.inUser Guide For Windows OS . Contents: 1. Download software from IITR Network Support Portal. 2. Installation of software and restart. 3. Configure Firefox changes. (if you use Firefox browser) 4. Connect to network (Wi-Fi or LAN). ... 4.1 Open …
SELECTION, INSTALLATION AND MAINTENANCE OF FIRST …
www.iitr.ac.in5.3 The required number of fire extinguishers may be determined by considering any single extinguisher of suitable type or a combination of two or more types. Recommendations made in Annex B may be taken as a guide. 6 SELECTION OF LOCATION 6.1 When selecting locations for fire extingui-shers, due consideration should be given to the
STANDARDS/MANUALS/ GUIDELINES FOR SMALL HYDRO …
www.iitr.ac.in14 Turbine Efficiency Curves (Source IS: 12800(Part-3)1997 21 15 Francis and Kaplan performance curves (Source IS: 12800 part 3) 22 16 Propeller turbine performance curves (Source IS: 12800 part 3) 23 17 Turbine Operating Regimes (Based on IEC: 61116) 24 18 Maximum Civil Features Cost (High Head Scheme) 26
CHAPTER-8 SWITCHYARD EQUIPMENT- HV Bus Bars, …
www.iitr.ac.in(Tamil Nadu Electricity Board Practice - TNEB Practice). iv) Maximum spans adjacent to stations: a) Lines rated 66 kV and above …. 152.40 m b) Lines rated 33 kV and below … 60.96 m Table 8.2: Wind Pressure & Temperature Data The table below gives the values of wind pressure and maximum and minimum temperatures specified in ...
Renewable Energy in India: Progress, Vision and Strategy
www.iitr.ac.inRenewable Energy in India: Progress, Vision and Strategy 1.0 Background 1.1 In the last six decades, India’s energy use has increased 16 times and the installed electricity capacity by 84 times. In 2008, India’s energy use was the fifth highest in the world.
Related documents
Push Data Science in Spark with sparklyr
raw.githubusercontent.comft_imputer() - Imputation estimator for completing missing values, uses the mean or the median of the columns ft_index_to_string() - Index labels back to label as strings ft_interaction() - Takes in Double and Vector type columns and outputs a flattened vector of their feature interactions Translates into Spark SQL statements DPLYR VERBS Wrangle