Dataset Status Protocol

In Edustudio, we view the dataset as three statuses: rawdata, middata, cachedata.

• inconsistent rawdata: the original data format provided by the dataset publisher.

• standardized middata: the standardized middle data format(see Middle Data Format Protocol) defined by EduStudio.

• model-friendly cachedata: the data format that is convenient for model usage.

Dataset Folder Format Example

All datasets are required to store in a unified folder. The example below illustrated the FrcSub dataset folder format.

data/
├── FrcSub
│   ├── cachedata
│   │   ├── FrcSub_five_fold
│   │   │   ├── datatpl_cfg.json
│   │   │   ├── df_exer.pkl
│   │   │   ├── df_stu.pkl
│   │   │   ├── dict_test_folds.pkl
│   │   │   ├── dict_train_folds.pkl
│   │   │   ├── dict_valid_folds.pkl
│   │   │   └── final_kwargs.pkl
│   │   └── FrcSub_one_fold
│   │       ├── datatpl_cfg.json
│   │       ├── df_exer.pkl
│   │       ├── df_stu.pkl
│   │       ├── dict_test_folds.pkl
│   │       ├── dict_train_folds.pkl
│   │       ├── dict_valid_folds.pkl
│   │       └── final_kwargs.pkl
│   ├── middata
│   │   ├── FrcSub.exer.csv
│   │   └── FrcSub.inter.csv
│   └── rawdata
│       ├── data.txt
│       ├── problemdesc.txt
│       ├── qnames.txt
│       └── q.txt

Dataset Stage protocol

The rawdata folder stores raw data files. For different datasets, they have different raw data file format. There is an example that loading dataset from rawdata.

from edustudio.quickstart import run_edustudio

run_edustudio(
    dataset='FrcSub',
    cfg_file_name=None,
    traintpl_cfg_dict={
        'cls': 'GeneralTrainTPL',
    },
    datatpl_cfg_dict={
        'cls': 'CDInterExtendsQDataTPL',
        'load_data_from": "rawdata", # specify the loading stage of the dataset
        'raw2mid_op': 'R2M_FrcSub' # specify the R2M atomic operation 
    },
    modeltpl_cfg_dict={
        'cls': 'KaNCD',
    },
    evaltpl_cfg_dict={
        'clses': ['PredictionEvalTPL', 'InterpretabilityEvalTPL'],
    }
)

The middata folder stores middle data files. For existing datasets, we provide the atomic operation inheriting the protocol class BaseRaw2Mid, which process raw data to middle data. The middle is required in atomic file protocol.

There is an example that loading dataset from middata.

from edustudio.quickstart import run_edustudio

run_edustudio(
    dataset='FrcSub',
    cfg_file_name=None,
    traintpl_cfg_dict={
        'cls': 'GeneralTrainTPL',
    },
    datatpl_cfg_dict={
        'cls': 'CDInterExtendsQDataTPL',
        'load_data_from": "middata", # specify the loading stage of the dataset
        'is_save_cache': True # whether to save cache data
        'cache_id': 'cache_default', # cache id, valid when is_save_cache=True
    },
    modeltpl_cfg_dict={
        'cls': 'KaNCD',
    },
    evaltpl_cfg_dict={
        'clses': ['PredictionEvalTPL', 'InterpretabilityEvalTPL'],
    }
)

With the middata of following atomic file protocol, we can implement some other atomic operations inheriting the protocol class BaseMid2Cache to build cachedata from middata.

There is an example that loading dataset from cachedata.

from edustudio.quickstart import run_edustudio

run_edustudio(
    dataset='FrcSub',
    cfg_file_name=None,
    traintpl_cfg_dict={
        'cls': 'GeneralTrainTPL',
    },
    datatpl_cfg_dict={
        'cls': 'CDInterExtendsQDataTPL',
        'load_data_from": "cachedata", # specify the loading stage of the dataset
        'cache_id': 'cache_default', # cache id, valid when is_save_cache=True
    },
    modeltpl_cfg_dict={
        'cls': 'KaNCD',
    },
    evaltpl_cfg_dict={
        'clses': ['PredictionEvalTPL', 'InterpretabilityEvalTPL'],
    }
)

Example：Atomic Operation Sequence of Data Processing

• R2M_FrcSub: process the Frcsub dataset from rawdata to midata

• M2C_FilterRecords4CD：Filter students or exercises whose number of interaction records is less than a threshold

• M2C_ReMapId: ReMap feature Id

• M2C_RandomDataSplit4CD: Split Datasets

• M2C_GenQMat: Generate Q-matrix

The ‘mid2cache_op_seq’ option in datatpl_cfg specify the atomic operation sequence

from edustudio.quickstart import run_edustudio

run_edustudio(
    dataset='FrcSub',
    cfg_file_name=None,
    traintpl_cfg_dict={
        'cls': 'GeneralTrainTPL',
    },
    datatpl_cfg_dict={
        'cls': 'CDInterExtendsQDataTPL',
        'load_data_from": "rawdata", # specify the loading stage of the dataset
        'raw2mid_op': 'R2M_FrcSub', 
        # the 'mid2cache_op_seq' option specify the atomic operation sequence
        'mid2cache_op_seq': ['M2C_Label2Int', 'M2C_FilterRecords4CD', 'M2C_ReMapId', 'M2C_RandomDataSplit4CD', 'M2C_GenQMat'],
    },
    modeltpl_cfg_dict={
        'cls': 'KaNCD',
    },
    evaltpl_cfg_dict={
        'clses': ['PredictionEvalTPL', 'InterpretabilityEvalTPL'],
    }
)