Answer:
4. Supervised learning.
Explanation:
Supervised and Unsupervised learning are both learning approaches in machine learning. In other words, they are sub-branches in machine learning.
In supervised learning, an algorithm(a function) is used to map input(s) to output(s). The aim of supervised learning is to predict output variables for given input data using a mapping function. When an input is given, predictions can be made to get the output.
Unsupervised learning on the other hand is suitable when no output variables are needed. The only data needed are the inputs. In this type of learning, the system just keeps learning more about the inputs.
Special applications of supervised learning are in image recognition, speech recognition, financial analysis, neural networking, forecasting and a whole lot more.
Application of unsupervised learning is in pre-processing of data during exploratory analysis.
<em>Hope this helps!</em>
Answer:
Codes
Explanation:
learn the codes first. when you're already expert, you'll find ways from there.
Mediocre skills required.
Answer:
False
Explanation:
Mail merge lets you create a batch of documents that are personalized for each recipient. For example, a form letter might be personalized to address each recipient by name. A data source, like a list, spreadsheet, or database, is associated with the document.
If $due_date contains a DateTime object, $due_date_diff will contain
c. a DateInterval object
Explanation:
- The DateInterval class ¶ represents a date interval.
- A date interval stores either a fixed amount of time (in years, months, days, hours etc) or a relative time string in the format that DateTime's constructor supports.
- The diff method is just as easy to use, but provides an extra piece of information: total days. This is important because when using the DateTime object to find a difference, we have a source and destination date, and therefore we can reduce the units of time into larger denominations. However, having the total number of days in between is a valuable piece of information.
- The PHP DateTime class has three methods that work with a DateInterval object:
- add
- sub
- diff
Properties
- y :Number of years.
-
m :Number of months.
-
d :Number of days.
-
h :Number of hours.
-
i :Number of minutes.
-
s :Number of seconds.
