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List of the contents of this article:

• 1,Arena Plus login Briefly introduce data annotation
• 2, What are the annotation rules of tone?
• 3, CA D size annotation command

Brief introduction to data annotation

The types of data annotation are mainly image annotation, voice annotation, 3D point cloud annotation and text annotation.L Image annotation Image annotation is to process unprocessed picture data, convert it into machine-recognizable information, and then transport it to artificial intelligence algorithms and models to complete the call.

Data annotation refers to the classification and annotation of data used in artificial intelligence applications. Simply put, data annotation is the process of processing unprocessed voice, picture, text, video and other data into machine-recognizable information.

Data annotation definition Data annotation is the process of processing unprocessed voice, picture, text, video and other data and converting it into machine-recognizable information.

What are the annotation rules of tone?

Basic rules: tones can only be marked on vowels in syllables, namely: a, o, e, i, u, ü; notation rules: first mark a, o, e, then i, u, ü. If you encounter iu and ui, mark them on the tail; don't mark them gently.

Rule 1: By default, the tone should be marked on the vowel of the syllable, and the letters should be selected first in the order of single vowel, a, o, e, i, u, ü. That is to say, in the vowel, find the letter a first, and if there is a, mark the tone directly on the letter a.

Tone labeling rules a o e i u ü standard tone in order, 'i, u mark the back side by side', small ü when it encounters j q x y, take off the hat (remove the dot). If the a vowel appears, it will not be let go, (that is, if there is a in the rhyme vowel, it will be marked on a. For example, lao, marked on a).

Tone annotation refers to the symbol mark used to represent the pitch or tone outline of speech in some linguistic and phonetic studies. The rules of tone annotation will vary according to different phonetic marking systems.

The annotation of tone is usually represented by upper and lower marks, such as aˊ for treble, aˇ for midrange, and aˋ for bass. Expansion: In addition, Arabic numerals can also be used to mark the tone, such as a1 for treble, a2 for midrange, and a3 for bass.

CAD dimension annotation command

1. First of all, in cad, the CAD dimension annotation shortcut key of linear annotation: dli. The shortcut key of aligning annotation CAD size annotation: dal. CAD size annotation shortcut key for angle annotation: dan. The CAD size annotation shortcut key of the last coordinate annotation: dimcord.

2. Now you can first mark the line with a length of 60 and a width of 50, enter the dal command in the command line and press the space, and then capture the two endpoints of the line segment to mark the size.

3. The cad annotation size shortcut command is [DDIM]. When dimension annotation, the size annotation style controls the dimension line, annotation text, and dimension boundary.The appearance and manner of lines and arrows is a collection of a set of system variables, which can be set intuitively in the form of a dialog box, and can also be entered in the command line.

4. Operation process: Enter DAL and space, specify the first and second points of the annotation, and you can choose non-parallel vertical two-point annotation (vertical parallel annotation can be realized). The shortcut command for arc length annotation is DIMARC. Operation process: Enter DAR and space, select the arc and determine the position of the annotation. The shortcut command for coordinate annotation is DIMORDINATE.