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Datasets:
hoololi
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CalcTrainer_dataset_annotated

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question_id
stringlengths
31
31
handwriting_image
imagewidth (px)
100
100
math_problem
stringlengths
9
12
correct_answer
int64
0
180
ocr_prediction
stringclasses
170 values
ocr_parsed_number
int64
0
1.52k
is_ocr_likely_correct
bool
2 classes
human_label
stringclasses
138 values
was_corrected
bool
2 classes
annotation_status
stringclasses
1 value
session_1751315582_5ea57b93_q01
7 × 4 = ?
28
28
28
true
28
false
validated
session_1751315582_5ea57b93_q02
4 × 9 = ?
36
36
36
true
36
false
validated
session_1751315582_5ea57b93_q03
8 × 9 = ?
72
72
72
true
72
false
validated
session_1751315582_5ea57b93_q04
2 × 7 = ?
14
14
14
true
14
false
validated
session_1751315582_5ea57b93_q05
7 × 2 = ?
14
14
14
true
14
false
validated
session_1751315582_5ea57b93_q06
4 × 2 = ?
8
28
28
false
8
true
validated
session_1751315582_5ea57b93_q07
8 × 2 = ?
16
16
16
true
16
false
validated
session_1751315582_5ea57b93_q08
8 × 9 = ?
72
72
72
true
72
false
validated
session_1751315582_5ea57b93_q09
8 × 8 = ?
64
64
64
true
64
false
validated
session_1751315582_5ea57b93_q10
5 × 4 = ?
20
20
20
true
20
false
validated
session_1751316257_6f515b23_q01
5 × 2 = ?
10
10
10
true
10
false
validated
session_1751316257_6f515b23_q02
9 × 9 = ?
81
81
81
true
81
false
validated
session_1751316257_6f515b23_q03
3 × 4 = ?
12
12
12
true
12
false
validated
session_1751316257_6f515b23_q04
2 × 9 = ?
18
18
18
true
18
false
validated
session_1751316257_6f515b23_q05
7 × 4 = ?
28
28
28
true
28
false
validated
session_1751316257_6f515b23_q06
6 × 3 = ?
18
18
18
true
18
false
validated
session_1751316257_6f515b23_q07
4 × 4 = ?
16
16
16
true
16
false
validated
session_1751316257_6f515b23_q08
4 × 4 = ?
16
16
16
true
16
false
validated
session_1751316257_6f515b23_q09
3 × 8 = ?
24
24
24
true
24
false
validated
session_1751316257_6f515b23_q10
5 × 3 = ?
15
15
15
true
15
false
validated
session_1751316319_43b05671_q01
13 + 33 = ?
46
46
46
true
46
false
validated
session_1751316319_43b05671_q02
26 + 40 = ?
66
66
66
true
66
false
validated
session_1751316319_43b05671_q03
10 + 25 = ?
35
35
35
true
35
false
validated
session_1751316319_43b05671_q04
37 + 46 = ?
83
83
83
true
83
false
validated
session_1751316319_43b05671_q05
45 + 5 = ?
50
50
50
true
50
false
validated
session_1751316319_43b05671_q06
19 + 15 = ?
34
34
34
true
34
false
validated
session_1751316319_43b05671_q07
13 + 29 = ?
42
42
42
true
42
false
validated
session_1751316365_b617b97b_q01
31 + 29 = ?
60
60
60
true
60
false
validated
session_1751316365_b617b97b_q02
32 + 14 = ?
46
46
46
true
46
false
validated
session_1751316365_b617b97b_q03
39 + 24 = ?
63
63
63
true
63
false
validated
session_1751316365_b617b97b_q04
38 + 21 = ?
59
59
59
true
59
false
validated
session_1751316365_b617b97b_q05
18 + 15 = ?
33
33
33
true
33
false
validated
session_1751316421_fc88e284_q01
28 + 35 = ?
63
63
63
true
63
false
validated
session_1751316421_fc88e284_q02
37 + 15 = ?
52
52
52
true
52
false
validated
session_1751316421_fc88e284_q03
50 + 43 = ?
93
93
93
true
93
false
validated
session_1751316421_fc88e284_q04
38 + 42 = ?
80
80
80
true
80
false
validated
session_1751316421_fc88e284_q05
17 + 18 = ?
35
35
35
true
35
false
validated
session_1751316421_fc88e284_q06
47 + 34 = ?
81
81
81
true
81
false
validated
session_1751316622_05beb66e_q01
38 + 22 = ?
60
60
60
true
60
false
validated
session_1751316622_05beb66e_q02
9 + 44 = ?
53
3
3
false
53
true
validated
session_1751316622_05beb66e_q03
26 + 4 = ?
30
30
30
true
30
false
validated
session_1751316622_05beb66e_q04
14 + 45 = ?
59
59
59
true
59
false
validated
session_1751316622_05beb66e_q05
47 + 25 = ?
72
72
72
true
72
false
validated
session_1751316622_05beb66e_q06
45 + 24 = ?
69
69
69
true
69
false
validated
session_1751318455_1cc98e7a_q01
30 + 6 = ?
36
36
36
true
36
false
validated
session_1751318455_1cc98e7a_q02
39 + 26 = ?
65
65
65
true
65
false
validated
session_1751318455_1cc98e7a_q03
22 + 34 = ?
56
556
556
false
56
true
validated
session_1751318455_1cc98e7a_q04
38 + 27 = ?
65
65
65
true
65
false
validated
session_1751318455_1cc98e7a_q05
3 + 19 = ?
22
22
22
true
22
false
validated
session_1751318455_1cc98e7a_q06
7 + 24 = ?
31
31
31
true
31
false
validated
session_1751318455_1cc98e7a_q07
31 + 29 = ?
60
60
60
true
60
false
validated
session_1751318517_5defe948_q01
9 × 6 = ?
54
54
54
true
54
false
validated
session_1751318517_5defe948_q02
8 × 8 = ?
64
64
64
true
64
false
validated
session_1751318517_5defe948_q03
8 × 9 = ?
72
72
72
true
72
false
validated
session_1751318517_5defe948_q04
2 × 8 = ?
16
16
16
true
16
false
validated
session_1751318517_5defe948_q05
3 × 6 = ?
18
18
18
true
18
false
validated
session_1751318517_5defe948_q06
3 × 5 = ?
15
15
15
true
15
false
validated
session_1751318517_5defe948_q07
2 × 3 = ?
6
26
26
false
6
true
validated
session_1751318517_5defe948_q08
5 × 7 = ?
35
35
35
true
35
false
validated
session_1751318517_5defe948_q09
9 × 2 = ?
18
18
18
true
18
false
validated
session_1751318616_bd6ca4c6_q01
6 × 9 = ?
54
54
54
true
54
false
validated
session_1751318616_bd6ca4c6_q02
7 × 5 = ?
35
35
35
true
35
false
validated
session_1751318616_bd6ca4c6_q03
7 × 6 = ?
42
44
44
false
42
true
validated
session_1751318616_bd6ca4c6_q04
2 × 5 = ?
10
10
10
true
10
false
validated
session_1751318616_bd6ca4c6_q05
3 × 5 = ?
15
15
15
true
15
false
validated
session_1751318616_bd6ca4c6_q06
8 × 6 = ?
48
48
48
true
48
false
validated
session_1751318616_bd6ca4c6_q07
4 × 3 = ?
12
12
12
true
12
false
validated
session_1751318616_bd6ca4c6_q08
9 × 4 = ?
36
36
36
true
36
false
validated
session_1751318616_bd6ca4c6_q09
3 × 5 = ?
15
15
15
true
15
false
validated
session_1751318616_bd6ca4c6_q10
6 × 2 = ?
12
012
12
true
12
false
validated
session_1751318616_bd6ca4c6_q11
6 × 3 = ?
18
18
18
true
18
false
validated
session_1751318616_bd6ca4c6_q12
2 × 6 = ?
12
12
12
true
12
false
validated
session_1751318616_bd6ca4c6_q13
8 × 8 = ?
64
64
64
true
64
false
validated
session_1751318616_bd6ca4c6_q14
2 × 2 = ?
4
2
2
false
4
true
validated
session_1751318616_bd6ca4c6_q15
7 × 3 = ?
21
21
21
true
21
false
validated
session_1751318616_bd6ca4c6_q16
5 × 7 = ?
35
33
33
false
35
true
validated
session_1751318616_bd6ca4c6_q17
4 × 6 = ?
24
24
24
true
24
false
validated
session_1751318616_bd6ca4c6_q18
2 × 7 = ?
14
14
14
true
14
false
validated
session_1751318953_0b9c7402_q01
36 + 45 = ?
81
81
81
true
81
false
validated
session_1751318953_0b9c7402_q02
60 + 63 = ?
123
0123
123
true
123
false
validated
session_1751318953_0b9c7402_q03
66 + 54 = ?
120
12
12
false
120
true
validated
session_1751318953_0b9c7402_q04
95 + 85 = ?
180
180
180
true
180
false
validated
session_1751318953_0b9c7402_q05
58 + 32 = ?
90
90
90
true
90
false
validated
session_1751318953_0b9c7402_q06
64 + 93 = ?
157
157
157
true
157
false
validated
session_1751318953_0b9c7402_q07
49 + 27 = ?
76
776
776
false
76
true
validated
session_1751318953_0b9c7402_q08
82 + 36 = ?
118
118
118
true
118
false
validated
session_1751318953_0b9c7402_q09
48 + 35 = ?
83
83
83
true
83
false
validated
session_1751318953_0b9c7402_q10
46 + 99 = ?
145
1495
1,495
false
145
true
validated
session_1751319120_f50a8201_q01
8 × 12 = ?
96
0
0
false
96
true
validated
session_1751319120_f50a8201_q02
10 × 5 = ?
50
50
50
true
50
false
validated
session_1751319120_f50a8201_q03
4 × 10 = ?
40
40
40
true
40
false
validated
session_1751319120_f50a8201_q04
10 × 7 = ?
70
70
70
true
70
false
validated
session_1751319120_f50a8201_q05
10 × 5 = ?
50
50
50
true
50
false
validated
session_1751319120_f50a8201_q06
12 × 11 = ?
132
132
132
true
132
false
validated
session_1751319120_f50a8201_q07
8 × 6 = ?
48
48
48
true
48
false
validated
session_1751319120_f50a8201_q08
6 × 6 = ?
36
36
36
true
36
false
validated
session_1751319120_f50a8201_q09
9 × 10 = ?
90
90
90
true
90
false
validated
session_1751319174_db25df8d_q01
66 + 80 = ?
146
146
146
true
146
false
validated
session_1751319174_db25df8d_q02
56 + 84 = ?
140
140
140
true
140
false
validated
session_1751319174_db25df8d_q03
88 + 68 = ?
156
176
176
false
176
false
validated
End of preview. Expand in Data Studio

CalcTrainer Annotator 📝

Annotation tool for validating OCR predictions on handwritten math answers from CalcTrainer

How to Use

  1. Review the math problem and handwritten answer
  2. Validate or correct the OCR suggestion:
    • ✅ Correct → Validates and moves to next
    • ❌ Incorrect → Type correct number and validate
  3. Export annotations anytime to save progress

Features

  • Smart filtering: Only shows unannotated entries
  • OCR suggestions: Pre-filled predictions with error warnings
  • Incremental export: Safely add annotations without data loss
  • Progress tracking: Real-time statistics

Data Flow 

CalcTrainer → Raw Dataset → Manual Annotation → Validated Dataset

Output

Creates hoololi/CalcTrainer_dataset_annotated with human-validated labels for OCR model fine-tuning.

Private Space - Controlled access for annotation quality.

Downloads last month
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Size of downloaded dataset files:
4.27 MB
Size of the auto-converted Parquet files:
4.27 MB
Number of rows:
1,447