Here are the potential issues found in the uploaded dataset documents according to the hint about typographical errors:

### Issue 1

```json
{
    "issue": "Typographical error in 'TODQA_Efficient_Task-Oriented_Data_Quality_Assessment.pdf'",
    "evidence": "A LSH family H of functions is defined for a metric space X , four thresholds r1, r2, p1 ∈ [0, 1] and p2 ∈ [0, 1], which satisfy r1 < r2 and p1 > p2.",
    "description": "There is an extra space before the comma in 'metric space X , four thresholds r1'. The correct sentence should be 'metric space X, four thresholds r1'."
}
```

### Issue 2

```json
{
    "issue": "Typographical error in 'dataset_dict.py'",
    "evidence": "Columns (`List[str]`, *optional*): Columns to format in the output. If specified, then the input batch of the transform only contains those columns. output_all_columns (`bool`, default to False): keep un-formatted columns as well in the output (as python objects).",
    "description": "The text 'keep un-formatted columns as well in the output' should start with an uppercase 'Keep' to maintain consistency with the other descriptions. The correct sentence should be 'Keep un-formatted columns as well in the output (as python objects)'."
}
```

### Issue 3

```json
{
    "issue": "Typographical error in 'Advances, challenges and opportunities in creating data for trustworthy AI.pdf'",
    "evidence": "AI models can tolerate some level of random label noise57, biased errors create biased models.",
    "description": "There is a missing period before 'biased errors create biased models'. The correct sentence should be 'AI models can tolerate some level of random label noise57. Biased errors create biased models.'"
}
```

### Issue 4

```json
{
    "issue": "Typographical error in 'A survey on dataset quality in machine learning.pdf'",
    "evidence": "This subsection discusses the risks associated with insufficient metadata leading to data misinterpretation.",
    "description": "There should be a hyphen in 'insufficient metadata'. The correct phrase should be 'insufficient meta-data'."
}
```

These issues highlight typographical errors in the provided documents, which could be addressed to improve the clarity and professionalism of the documentation.