symbols

Number rules

Notes
1.Support numbers, time, date, year, ordinal number, fraction, currency, phone number;
2.Applicable kernel：
 en.sent.score
 en.sent.pron
 en.pred.score
 en.choc.score
 en.scne.exam
 en.prtl.exam

1. Numbers

1.1 Number

|Supported shorthand |Description|Evaluation text example|Evaluation engine pronunciation | |:---- |:--- |------ | | | Fraction | Each number is pronounced in turn | -2/5 | negative two fifths | | <= 4 digits | Numerical reading | 8888
-12.66| eight thousand eight hundred eighty eight.
negative twelve point six six. | | >4 digits and <15 digits without comma | Each number is pronounced in turn| 231123 | two three one one two three | | >4 digits and <15 digits with comma | Numerical reading| 1,234,234,234 | one billion two hundred thirty four million two hundred thirty four thousand two hundred thirty four | | Contains a hyphen | Each number is pronounced in turn | 427-0635 | four two seven zero six three five |

1.2 Ordinal number

|Supported shorthand |Description|Evaluation text example|Evaluation engine pronunciation | |:---- |:--- |------ | | | 0-100 ordinal | Ordinal reading| 1st
2nd
20th| first
second
twentieth|

2. Time

|Time Type|Description|Evaluation text example|Evaluation engine pronunciation | |:---- |:--- |------ | | | Year plus s, support 1000s~2000s | Era | 1960s| nineteen sixties | | Day, month, year, without s | year | 3 Jan. 1980| the third of January nineteen eighty | | Day,month | Month date| 3 Jan.
3 January| the third of January
the third of January| | Hour, minute | Hour | 13:00
9:30| thirteen o'clock
nine thirty |

3. Unit symbol

3.1 Time unit

|Supported shorthand |Description|Evaluation text example|Evaluation engine pronunciation | |:---- |:--- |------ | | | h | hour | 3h | three hours| | min | minutes|5min | five minutes| | s | second|5s | five seconds|

3.2 Unit of length

|Supported shorthand |Description|Evaluation text example|Evaluation engine pronunciation | |:---- |------ ||| | km | kilometer |5km | five kilometers | | m | meter |5m |five meters | | dm | decimeter | 5dm | five decimeters | | cm | centimeter | 5cm | five centimeters | | mm | millimeter | 5mm | five millimeters | | um | micron | 5um |five microns | | nm | nano | 5nm |five nanos |

3.3 Mass unit

|Supported shorthand |Description|Evaluation text example| Evaluation engine pronunciation | |:---- |------ || | | t | ton |5t | five tons | | kg | kilogram |5kg | five kilograms | | g | gram | 5g | five grams | | mg | milligram | 5mg | five milligrams |

3.4 Temperature unit

|Supported shorthand |Description|Evaluation text example| Evaluation engine pronunciation | |:---- |------ || | | °c | degree | 5°c | five degrees celsius | | °C | degree | 5°C | five degrees celsius |

3.5 Angle unit

|Supported shorthand |Description|Evaluation text example| Evaluation engine pronunciation | |:---- |------ || | | ° | degree | 5° | five degrees |

3.6 Frequency unit

|Supported shorthand |Description|Evaluation text example| Evaluation engine pronunciation | |:---- |------ || | | hz | hertz | 5hz | five hertz | | HZ | hertz | 5HZ | five hertz |

3.7 Others

|Supported shorthand |Description|Evaluation text example| Evaluation engine pronunciation | |:---- |------ || | | dB | decibel | 5dB | five decibels | | db | decibel | 5db | five decibels | | lb | pound | 5lb | five pounds | | % | percent | 5% | five percent |

4. Currency symbol

|Supported shorthand |Description|Evaluation text example| Evaluation engine pronunciation | |:---- |------ || | | $ | dollar | $5 | five dollars | | £ | pound | £5 | five pounds | | € | euro | €5 | five euros | | ¥ | yuan | ¥5 | five yuan |

5. Combination unit

|Supported shorthand |Description|Evaluation text example| Evaluation engine pronunciation | |:---- |------ || | | g/m3 | gram/cubic meter | 5g/m3 | five grams per cubic meter | | g/m | gram/meter | 5g/m | five grams per meter |

6. Digital unit combination

Evaluation text example	Evaluation engine pronunciation
1200m	one thousand two hundred meters
6,500.12kg	six thousand five hundred point one two kilograms
16HZ	sixteen hertz
605lb	six thousand five pounds
6.8%	six point eight percent
$40.25	forty dollars and twenty five cents