tgb.utils

clean_rows(fname, outname)

clean the rows with comma in the name args: fname: the path to the raw data outname: the path to the cleaned data

Source code in tgb/utils/pre_process.py

def clean_rows(
    fname: str,
    outname: str,
):
    r"""
    clean the rows with comma in the name
    args:
        fname: the path to the raw data
        outname: the path to the cleaned data
    """

    outf = open(outname, "w")

    with open(fname) as f:
        s = next(f)
        outf.write(s)
        for idx, line in enumerate(f):
            strs = ["China, Taiwan Province of", "China, mainland"]
            for str in strs:
                line = line.replace(
                    "China, Taiwan Province of", "Taiwan Province of China"
                )
                line = line.replace("China, mainland", "China mainland")
                line = line.replace("China, Hong Kong SAR", "China Hong Kong SAR")
                line = line.replace("China, Macao SAR", "China Macao SAR")
                line = line.replace(
                    "Saint Helena, Ascension and Tristan da Cunha",
                    "Saint Helena Ascension and Tristan da Cunha",
                )

            e = line.strip().split(",")
            if len(e) > 4:
                print(e)
                raise ValueError("line has more than 4 elements")
            outf.write(line)

    outf.close()

convert_str2int(in_str)

convert strings to vectors of integers based on individual character each letter is converted as follows, a=10, b=11 numbers are still int Parameters: in_str: an input string to parse Returns: out: a numpy integer array

Source code in tgb/utils/pre_process.py

def convert_str2int(
    in_str: str,
) -> np.ndarray:
    """
    convert strings to vectors of integers based on individual character
    each letter is converted as follows, a=10, b=11
    numbers are still int
    Parameters:
        in_str: an input string to parse
    Returns:
        out: a numpy integer array
    """
    out = []
    for element in in_str:
        if element.isnumeric():
            out.append(element)
        elif element == "!":
            out.append(-1)
        else:
            out.append(ord(element.upper()) - 44 + 9)
    out = np.array(out, dtype=np.float32)
    return out

csv_to_pd_data(fname)

currently used by tgbl-flight dataset convert the raw .csv data to pandas dataframe and numpy array input .csv file format should be: timestamp, node u, node v, attributes Args: fname: the path to the raw data

Source code in tgb/utils/pre_process.py

def csv_to_pd_data(
    fname: str,
) -> pd.DataFrame:
    r"""
    currently used by tgbl-flight dataset
    convert the raw .csv data to pandas dataframe and numpy array
    input .csv file format should be: timestamp, node u, node v, attributes
    Args:
        fname: the path to the raw data
    """
    feat_size = 16
    num_lines = sum(1 for line in open(fname)) - 1
    print("number of lines counted", num_lines)
    u_list = np.zeros(num_lines)
    i_list = np.zeros(num_lines)
    ts_list = np.zeros(num_lines)
    label_list = np.zeros(num_lines)
    feat_l = np.zeros((num_lines, feat_size))
    idx_list = np.zeros(num_lines)
    w_list = np.zeros(num_lines)
    print("numpy allocated")
    node_ids = {}
    unique_id = 0
    ts_format = None

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        #'day','src','dst','callsign','typecode'
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
                continue
            else:
                ts = row[0]
                if ts_format is None:
                    if (ts.isdigit()):
                        ts_format = True
                    else:
                        ts_format = False

                if ts_format:
                    ts = float(int(ts)) #unix timestamp already
                else:
                    #convert to unix timestamp
                    TIME_FORMAT = "%Y-%m-%d"
                    date_cur = datetime.datetime.strptime(ts, TIME_FORMAT)
                    ts = float(date_cur.timestamp())
                    # TIME_FORMAT = "%Y-%m-%d" # 2019-01-01
                    # date_cur  = date.fromisoformat(ts)
                    # dt = datetime.datetime.combine(date_cur, datetime.datetime.min.time())
                    # dt = dt.replace(tzinfo=datetime.timezone.edt)
                    # ts = float(dt.timestamp())


                src = row[1]
                dst = row[2]

                # 'callsign' has max size 8, can be 4, 5, 6, or 7
                # 'typecode' has max size 8
                # use ! as padding

                # pad row[3] to size 7
                if len(row[3]) == 0:
                    row[3] = "!!!!!!!!"
                while len(row[3]) < 8:
                    row[3] += "!"

                # pad row[4] to size 4
                if len(row[4]) == 0:
                    row[4] = "!!!!!!!!"
                while len(row[4]) < 8:
                    row[4] += "!"
                if len(row[4]) > 8:
                    row[4] = "!!!!!!!!"

                feat_str = row[3] + row[4]

                if src not in node_ids:
                    node_ids[src] = unique_id
                    unique_id += 1
                if dst not in node_ids:
                    node_ids[dst] = unique_id
                    unique_id += 1
                u = node_ids[src]
                i = node_ids[dst]
                u_list[idx - 1] = u
                i_list[idx - 1] = i
                ts_list[idx - 1] = ts
                idx_list[idx - 1] = idx
                w_list[idx - 1] = float(1)
                feat_l[idx - 1] = convert_str2int(feat_str)
                idx += 1
    return (
        pd.DataFrame(
            {
                "u": u_list,
                "i": i_list,
                "ts": ts_list,
                "label": label_list,
                "idx": idx_list,
                "w": w_list,
            }
        ),
        feat_l,
        node_ids,
    )

csv_to_pd_data_rc(fname)

currently used by redditcomments dataset convert the raw .csv data to pandas dataframe and numpy array input .csv file format should be: timestamp, node u, node v, attributes Args: fname: the path to the raw data

Source code in tgb/utils/pre_process.py

def csv_to_pd_data_rc(
    fname: str,
) -> pd.DataFrame:
    r"""
    currently used by redditcomments dataset
    convert the raw .csv data to pandas dataframe and numpy array
    input .csv file format should be: timestamp, node u, node v, attributes
    Args:
        fname: the path to the raw data
    """
    feat_size = 2  # 1 for subreddit, 1 for num words
    num_lines = sum(1 for line in open(fname)) - 1
    #print("number of lines counted", num_lines)
    print("there are ", num_lines, " lines in the raw data")
    u_list = np.zeros(num_lines)
    i_list = np.zeros(num_lines)
    ts_list = np.zeros(num_lines)
    label_list = np.zeros(num_lines)
    feat_l = np.zeros((num_lines, feat_size))
    idx_list = np.zeros(num_lines)
    w_list = np.zeros(num_lines)
    node_ids = {}

    unique_id = 0
    max_words = 5000  # counted form statistics

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        # ['ts', 'src', 'dst', 'subreddit', 'num_words', 'score']
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
                continue
            else:
                ts = int(row[0])
                src = row[1]
                dst = row[2]
                num_words = int(row[3]) / max_words  # int number, normalize to [0,1]
                score = int(row[4])  # int number

                # reindexing node and subreddits
                if src not in node_ids:
                    node_ids[src] = unique_id
                    unique_id += 1
                if dst not in node_ids:
                    node_ids[dst] = unique_id
                    unique_id += 1
                w = float(score)
                u = node_ids[src]
                i = node_ids[dst]
                u_list[idx - 1] = u
                i_list[idx - 1] = i
                ts_list[idx - 1] = ts
                idx_list[idx - 1] = idx
                w_list[idx - 1] = w
                feat_l[idx - 1] = np.array([num_words])
                idx += 1
    print("there are ", len(node_ids), " unique nodes")

    return (
        pd.DataFrame(
            {
                "u": u_list,
                "i": i_list,
                "ts": ts_list,
                "label": label_list,
                "idx": idx_list,
                "w": w_list,
            }
        ),
        feat_l,
        node_ids,
    )

csv_to_pd_data_sc(fname)

currently used by stablecoin dataset convert the raw .csv data to pandas dataframe and numpy array input .csv file format should be: timestamp, node u, node v, attributes Parameters: fname: the path to the raw data Returns: df: a pandas dataframe containing the edgelist data feat_l: a numpy array containing the node features node_ids: a dictionary mapping node id to integer

Source code in tgb/utils/pre_process.py

def csv_to_pd_data_sc(
    fname: str,
) -> pd.DataFrame:
    r"""
    currently used by stablecoin dataset
    convert the raw .csv data to pandas dataframe and numpy array
    input .csv file format should be: timestamp, node u, node v, attributes
    Parameters:
        fname: the path to the raw data
    Returns:
        df: a pandas dataframe containing the edgelist data
        feat_l: a numpy array containing the node features
        node_ids: a dictionary mapping node id to integer
    """
    feat_size = 1
    num_lines = sum(1 for line in open(fname)) - 1
    print("number of lines counted", num_lines)
    u_list = np.zeros(num_lines)
    i_list = np.zeros(num_lines)
    ts_list = np.zeros(num_lines)
    label_list = np.zeros(num_lines)
    feat_l = np.zeros((num_lines, feat_size))
    idx_list = np.zeros(num_lines)
    w_list = np.zeros(num_lines)
    print("numpy allocated")
    node_ids = {}
    unique_id = 0

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        # time,src,dst,weight
        # 1648811421,0x27cbb0e6885ccb1db2dab7c2314131c94795fbef,0x8426a27add8dca73548f012d92c7f8f4bbd42a3e,800.0
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
                continue
            else:
                ts = int(row[0])
                src = row[1]
                dst = row[2]

                if src not in node_ids:
                    node_ids[src] = unique_id
                    unique_id += 1
                if dst not in node_ids:
                    node_ids[dst] = unique_id
                    unique_id += 1

                w = float(row[3])
                if w == 0:
                    w = 1

                u = node_ids[src]
                i = node_ids[dst]
                u_list[idx - 1] = u
                i_list[idx - 1] = i
                ts_list[idx - 1] = ts
                idx_list[idx - 1] = idx
                w_list[idx - 1] = w
                feat_l[idx - 1] = np.zeros(feat_size)
                idx += 1

    #! normalize by log 2 for stablecoin
    w_list = np.log2(w_list)

    return (
        pd.DataFrame(
            {
                "u": u_list,
                "i": i_list,
                "ts": ts_list,
                "label": label_list,
                "idx": idx_list,
                "w": w_list,
            }
        ),
        feat_l,
        node_ids,
    )

load_edgelist_datetime(fname, label_size=514)

load the edgelist into a pandas dataframe use numpy array instead of list for faster processing assume all edges are already sorted by time convert all time unit to unix time

time, user_id, genre, weight

Source code in tgb/utils/pre_process.py

def load_edgelist_datetime(fname, label_size=514):
    """
    load the edgelist into a pandas dataframe
    use numpy array instead of list for faster processing
    assume all edges are already sorted by time
    convert all time unit to unix time

    time, user_id, genre, weight
    """
    feat_size = 1
    num_lines = sum(1 for line in open(fname)) - 1
    print("number of lines counted", num_lines)
    u_list = np.zeros(num_lines)
    i_list = np.zeros(num_lines)
    ts_list = np.zeros(num_lines)
    feat_l = np.zeros((num_lines, feat_size))
    idx_list = np.zeros(num_lines)
    w_list = np.zeros(num_lines)
    #print("numpy allocated")
    node_ids = {}  # dictionary for node ids
    label_ids = {}  # dictionary for label ids
    node_uid = label_size  # node ids start after the genre nodes
    label_uid = 0

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
            else:
                ts = int(row[0])
                user_id = row[1]
                genre = row[2]
                w = float(row[3])

                if user_id not in node_ids:
                    node_ids[user_id] = node_uid
                    node_uid += 1

                if genre not in label_ids:
                    label_ids[genre] = label_uid
                    if label_uid >= label_size:
                        print("id overlap, terminate")
                    label_uid += 1

                u = node_ids[user_id]
                i = label_ids[genre]
                u_list[idx - 1] = u
                i_list[idx - 1] = i
                ts_list[idx - 1] = ts
                idx_list[idx - 1] = idx
                w_list[idx - 1] = w
                feat_l[idx - 1] = np.asarray([w])
                idx += 1

    return (
        pd.DataFrame(
            {"u": u_list, "i": i_list, "ts": ts_list, "idx": idx_list, "w": w_list}
        ),
        feat_l,
        node_ids,
        label_ids,
    )

load_edgelist_sr(fname, label_size=2221)

load the edgelist into pandas dataframe also outputs index for the user nodes and genre nodes Parameters: fname: str, name of the input file label_size: int, number of genres Returns: df: a pandas dataframe containing the edgelist data

Source code in tgb/utils/pre_process.py

def load_edgelist_sr(
    fname: str,
    label_size: int = 2221,
) -> pd.DataFrame:
    """
    load the edgelist into pandas dataframe
    also outputs index for the user nodes and genre nodes
    Parameters:
        fname: str, name of the input file
        label_size: int, number of genres
    Returns:
        df: a pandas dataframe containing the edgelist data
    """
    feat_size = 1 #2
    num_lines = sum(1 for line in open(fname)) - 1
    #print("number of lines counted", num_lines)
    print("there are ", num_lines, " lines in the raw data")
    u_list = np.zeros(num_lines)
    i_list = np.zeros(num_lines)
    ts_list = np.zeros(num_lines)
    label_list = np.zeros(num_lines)
    feat_l = np.zeros((num_lines, feat_size))
    idx_list = np.zeros(num_lines)
    w_list = np.zeros(num_lines)

    node_ids = {}
    rd_dict = {}
    node_uid = label_size  # node ids start after all the genres
    sr_uid = 0

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        # ['ts', 'src', 'subreddit', 'num_words', 'score']
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
            else:
                ts = row[0]
                src = row[1]
                subreddit = row[2]
                #num_words = int(row[3])
                score = int(row[4])
                if src not in node_ids:
                    node_ids[src] = node_uid
                    node_uid += 1
                if subreddit not in rd_dict:
                    rd_dict[subreddit] = sr_uid
                    sr_uid += 1
                w = float(score)
                u = node_ids[src]
                i = rd_dict[subreddit]
                u_list[idx - 1] = u
                i_list[idx - 1] = i
                ts_list[idx - 1] = ts
                idx_list[idx - 1] = idx
                w_list[idx - 1] = w
                feat_l[idx - 1] = np.array([w])
                idx += 1

        return (
            pd.DataFrame(
                {
                    "u": u_list,
                    "i": i_list,
                    "ts": ts_list,
                    "label": label_list,
                    "idx": idx_list,
                    "w": w_list,
                }
            ),
            feat_l,
            node_ids,
            rd_dict,
        )

load_edgelist_token(fname, label_size=1001)

load the edgelist into pandas dataframe also outputs index for the user nodes and genre nodes Parameters: fname: str, name of the input file label_size: int, number of genres Returns: df: a pandas dataframe containing the edgelist data

Source code in tgb/utils/pre_process.py

def load_edgelist_token(
    fname: str,
    label_size: int = 1001,
) -> pd.DataFrame:
    """
    load the edgelist into pandas dataframe
    also outputs index for the user nodes and genre nodes
    Parameters:
        fname: str, name of the input file
        label_size: int, number of genres
    Returns:
        df: a pandas dataframe containing the edgelist data
    """
    feat_size = 2
    num_lines = sum(1 for line in open(fname)) - 1
    #print("number of lines counted", num_lines)
    print("there are ", num_lines, " lines in the raw data")
    u_list = np.zeros(num_lines)
    i_list = np.zeros(num_lines)
    ts_list = np.zeros(num_lines)
    label_list = np.zeros(num_lines)
    feat_l = np.zeros((num_lines, feat_size))
    idx_list = np.zeros(num_lines)
    w_list = np.zeros(num_lines)

    node_ids = {}
    rd_dict = {}
    node_uid = label_size  # node ids start after all the genres
    sr_uid = 0

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        # [timestamp,user_address,token_address,value,IsSender]
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
            else:
                ts = row[0]
                src = row[1]
                token = row[2]
                w = float(row[3])
                attr = float(row[4])
                if src not in node_ids:
                    node_ids[src] = node_uid
                    node_uid += 1
                if token not in rd_dict:
                    rd_dict[token] = sr_uid
                    sr_uid += 1
                u = node_ids[src]
                i = rd_dict[token]
                u_list[idx - 1] = u
                i_list[idx - 1] = i
                ts_list[idx - 1] = ts
                idx_list[idx - 1] = idx
                w_list[idx - 1] = w
                feat_l[idx - 1] = np.array([w,attr])
                idx += 1

        return (
            pd.DataFrame(
                {
                    "u": u_list,
                    "i": i_list,
                    "ts": ts_list,
                    "label": label_list,
                    "idx": idx_list,
                    "w": w_list,
                }
            ),
            feat_l,
            node_ids,
            rd_dict,
        )

load_edgelist_trade(fname, label_size=255)

load the edgelist into pandas dataframe

Source code in tgb/utils/pre_process.py

def load_edgelist_trade(fname: str, label_size=255):
    """
    load the edgelist into pandas dataframe
    """
    feat_size = 1
    num_lines = sum(1 for line in open(fname)) - 1
    print("number of lines counted", num_lines)
    u_list = np.zeros(num_lines)
    i_list = np.zeros(num_lines)
    ts_list = np.zeros(num_lines)
    feat_l = np.zeros((num_lines, feat_size))
    idx_list = np.zeros(num_lines)
    w_list = np.zeros(num_lines)
    #print("numpy allocated")
    node_ids = {}  # dictionary for node ids
    node_uid = 0

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
            else:
                ts = int(row[0])
                u = row[1]
                v = row[2]
                w = float(row[3])
                if u not in node_ids:
                    node_ids[u] = node_uid
                    node_uid += 1

                if v not in node_ids:
                    node_ids[v] = node_uid
                    node_uid += 1

                u = node_ids[u]
                i = node_ids[v]
                u_list[idx - 1] = u
                i_list[idx - 1] = i
                ts_list[idx - 1] = ts
                idx_list[idx - 1] = idx
                w_list[idx - 1] = w
                feat_l[idx - 1] = np.array([w])
                idx += 1

    return (
        pd.DataFrame(
            {"u": u_list, "i": i_list, "ts": ts_list, "idx": idx_list, "w": w_list}
        ),
        feat_l,
        node_ids,
    )

load_edgelist_wiki(fname)

loading wikipedia dataset into pandas dataframe similar processing to https://pytorch-geometric.readthedocs.io/en/latest/_modules/torch_geometric/datasets/jodie.html

Parameters:

Name	Type	Description	Default
fname	str	str, name of the input file	required

Returns: df: a pandas dataframe containing the edgelist data

Source code in tgb/utils/pre_process.py

def load_edgelist_wiki(fname: str) -> pd.DataFrame:
    """
    loading wikipedia dataset into pandas dataframe
    similar processing to
    https://pytorch-geometric.readthedocs.io/en/latest/_modules/torch_geometric/datasets/jodie.html

    Parameters:
        fname: str, name of the input file
    Returns:
        df: a pandas dataframe containing the edgelist data
    """
    df = pd.read_csv(fname, skiprows=1, header=None)
    src = df.iloc[:, 0].values
    dst = df.iloc[:, 1].values
    dst += int(src.max()) + 1
    t = df.iloc[:, 2].values
    msg = df.iloc[:, 4:].values
    idx = np.arange(t.shape[0])
    w = np.ones(t.shape[0])

    return pd.DataFrame({"u": src, "i": dst, "ts": t, "idx": idx, "w": w}), msg, None

load_genre_list(fname)

load the list of genres

Source code in tgb/utils/pre_process.py

def load_genre_list(fname):
    """
    load the list of genres
    """
    if not osp.exists(fname):
        raise FileNotFoundError(f"File not found at {fname}")

    edgelist = open(fname, "r")
    lines = list(edgelist.readlines())
    edgelist.close()

    genre_index = {}
    ctr = 0
    for i in range(1, len(lines)):
        vals = lines[i].split(",")
        genre = vals[0]
        if genre not in genre_index:
            genre_index[genre] = ctr
            ctr += 1
        else:
            raise ValueError("duplicate in genre_index")
    return genre_index

load_label_dict(fname, node_ids, rd_dict)

load node labels into a nested dictionary instead of pandas dataobject {ts: {node_id: label_vec}} Parameters: fname: str, name of the input file node_ids: dictionary of user names mapped to integer node ids rd_dict: dictionary of subreddit names mapped to integer node ids

Source code in tgb/utils/pre_process.py

def load_label_dict(fname: str, node_ids: dict, rd_dict: dict) -> dict:
    """
    load node labels into a nested dictionary instead of pandas dataobject
    {ts: {node_id: label_vec}}
    Parameters:
        fname: str, name of the input file
        node_ids: dictionary of user names mapped to integer node ids
        rd_dict: dictionary of subreddit names mapped to integer node ids
    """
    if not osp.exists(fname):
        raise FileNotFoundError(f"File not found at {fname}")

    # day, user_idx, label_vec
    label_size = len(rd_dict)
    node_label_dict = {}  # {ts: {node_id: label_vec}}

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        # ['ts', 'src', 'dst', 'w']
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
            else:
                u = node_ids[row[1]]
                ts = int(row[0])
                v = int(rd_dict[row[2]])
                weight = float(row[3])
                if (ts not in node_label_dict):
                    node_label_dict[ts] = {u:np.zeros(label_size)}

                if (u not in node_label_dict[ts]):
                    node_label_dict[ts][u] = np.zeros(label_size)

                node_label_dict[ts][u][v] = weight
                idx += 1
        return node_label_dict

load_labels_sr(fname, node_ids, rd_dict)

load the node labels for subreddit dataset

Source code in tgb/utils/pre_process.py

def load_labels_sr(
    fname,
    node_ids,
    rd_dict,
):
    """
    load the node labels for subreddit dataset
    """
    if not osp.exists(fname):
        raise FileNotFoundError(f"File not found at {fname}")

    # day, user_idx, label_vec
    label_size = len(rd_dict)
    label_vec = np.zeros(label_size)
    ts_prev = 0
    prev_user = 0

    ts_list = []
    node_id_list = []
    y_list = []

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        # ['ts', 'src', 'subreddit', 'num_words', 'score']
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
            else:
                user_id = node_ids[int(row[1])]
                ts = int(row[0])
                sr_id = int(rd_dict[row[2]])
                weight = float(row[3])
                if idx == 1:
                    ts_prev = ts
                    prev_user = user_id
                # the next day
                if ts != ts_prev:
                    ts_list.append(ts_prev)
                    node_id_list.append(prev_user)
                    y_list.append(label_vec)
                    label_vec = np.zeros(label_size)
                    ts_prev = ts
                    prev_user = user_id
                else:
                    label_vec[sr_id] = weight

                if user_id != prev_user:
                    ts_list.append(ts_prev)
                    node_id_list.append(prev_user)
                    y_list.append(label_vec)
                    prev_user = user_id
                    label_vec = np.zeros(label_size)
                idx += 1
        return pd.DataFrame({"ts": ts_list, "node_id": node_id_list, "y": y_list})

load_trade_label_dict(fname, node_ids)

load node labels into a nested dictionary instead of pandas dataobject {ts: {node_id: label_vec}} Parameters: fname: str, name of the input file node_ids: dictionary of user names mapped to integer node ids Returns: node_label_dict: a nested dictionary of node labels

Source code in tgb/utils/pre_process.py

def load_trade_label_dict(
    fname: str,
    node_ids: dict,
) -> dict:
    """
    load node labels into a nested dictionary instead of pandas dataobject
    {ts: {node_id: label_vec}}
    Parameters:
        fname: str, name of the input file
        node_ids: dictionary of user names mapped to integer node ids
    Returns:
        node_label_dict: a nested dictionary of node labels
    """
    if not osp.exists(fname):
        raise FileNotFoundError(f"File not found at {fname}")

    label_size = len(node_ids)
    #label_vec = np.zeros(label_size)

    node_label_dict = {}  # {ts: {node_id: label_vec}}

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
            else:
                ts = int(row[0])
                u = node_ids[row[1]]
                v = node_ids[row[2]]
                weight = float(row[3])

                if (ts not in node_label_dict):
                    node_label_dict[ts] = {u:np.zeros(label_size)}

                if (u not in node_label_dict[ts]):
                    node_label_dict[ts][u] = np.zeros(label_size)

                node_label_dict[ts][u][v] = weight
                idx += 1
        return node_label_dict

process_node_feat(fname, node_ids)

1. need to have the same node id as csv_to_pd_data
2. process the various node features into a vector
3. return a numpy array of node features with index corresponding to node id

airport_code,type,continent,iso_region,longitude,latitude type: onehot encoding continent: onehot encoding iso_region: alphabet encoding same as edge feat longitude: float divide by 180 latitude: float divide by 90

Source code in tgb/utils/pre_process.py

def process_node_feat(
    fname: str,
    node_ids,
):
    """
    1. need to have the same node id as csv_to_pd_data
    2. process the various node features into a vector
    3. return a numpy array of node features with index corresponding to node id

    airport_code,type,continent,iso_region,longitude,latitude
    type: onehot encoding
    continent: onehot encoding
    iso_region: alphabet encoding same as edge feat
    longitude: float divide by 180
    latitude: float divide by 90
    """
    feat_size = 20
    node_feat = np.zeros((len(node_ids), feat_size))
    type_dict = {}
    type_idx = 0
    continent_dict = {}
    cont_idx = 0

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        # airport_code,type,continent,iso_region,longitude,latitude
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
                continue
            else:
                code = row[0]
                if code not in node_ids:
                    continue
                else:
                    node_id = node_ids[code]
                    airport_type = row[1]
                    if airport_type not in type_dict:
                        type_dict[airport_type] = type_idx
                        type_idx += 1
                    continent = row[2]
                    if continent not in continent_dict:
                        continent_dict[continent] = cont_idx
                        cont_idx += 1

    with open(fname, "r") as csv_file:
        csv_reader = csv.reader(csv_file, delimiter=",")
        idx = 0
        # airport_code,type,continent,iso_region,longitude,latitude
        for row in tqdm(csv_reader):
            if idx == 0:
                idx += 1
                continue
            else:
                code = row[0]
                if code not in node_ids:
                    continue
                else:
                    node_id = node_ids[code]
                    airport_type = type_dict[row[1]]
                    type_vec = np.zeros(type_idx)
                    type_vec[airport_type] = 1
                    continent = continent_dict[row[2]]
                    cont_vec = np.zeros(cont_idx)
                    cont_vec[continent] = 1
                    while len(row[3]) < 7:
                        row[3] += "!"
                    iso_region = convert_str2int(row[3])  # numpy float array
                    lng = float(row[4])
                    lat = float(row[5])
                    coor_vec = np.array([lng, lat])
                    final = np.concatenate(
                        (type_vec, cont_vec, iso_region, coor_vec), axis=0
                    )
                    node_feat[node_id] = final
    return node_feat

reindex(df, bipartite=False)

reindex the nodes especially if the node ids are not integers Args: df: the pandas dataframe containing the graph bipartite: whether the graph is bipartite

Source code in tgb/utils/pre_process.py

def reindex(
    df: pd.DataFrame,
    bipartite: Optional[bool] = False,
):
    r"""
    reindex the nodes especially if the node ids are not integers
    Args:
        df: the pandas dataframe containing the graph
        bipartite: whether the graph is bipartite
    """
    new_df = df.copy()
    if bipartite:
        assert df.u.max() - df.u.min() + 1 == len(df.u.unique())
        assert df.i.max() - df.i.min() + 1 == len(df.i.unique())

        upper_u = df.u.max() + 1
        new_i = df.i + upper_u

        new_df.i = new_i
        new_df.u += 1
        new_df.i += 1
        new_df.idx += 1
    else:
        new_df.u += 1
        new_df.i += 1
        new_df.idx += 1

    return new_df

load_pkl(fname)

load a python object from a pickle file

Source code in tgb/utils/utils.py

def load_pkl(fname: str) -> Any:
    r"""
    load a python object from a pickle file
    """
    with open(fname, "rb") as handle:
        return pickle.load(handle)

save_pkl(obj, fname)

save a python object as a pickle file

Source code in tgb/utils/utils.py

def save_pkl(obj: Any, fname: str) -> None:
    r"""
    save a python object as a pickle file
    """
    with open(fname, "wb") as handle:
        pickle.dump(obj, handle, protocol=pickle.HIGHEST_PROTOCOL)

save_results(new_results, filename)

save (new) results into a json file :param: new_results (dictionary): a dictionary of new results to be saved :filename: the name of the file to save the (new) results

Source code in tgb/utils/utils.py

def save_results(new_results: dict, filename: str):
    r"""
    save (new) results into a json file
    :param: new_results (dictionary): a dictionary of new results to be saved
    :filename: the name of the file to save the (new) results
    """
    if os.path.isfile(filename):
        # append to the file
        with open(filename, 'r+') as json_file:
            file_data = json.load(json_file)
            # convert file_data to list if not
            if type(file_data) is dict:
                file_data = [file_data]
            file_data.append(new_results)
            json_file.seek(0)
            json.dump(file_data, json_file, indent=4)
    else:
        # dump the results
        with open(filename, 'w') as json_file:
            json.dump(new_results, json_file, indent=4)

set_random_seed(seed)

setting random seed for reproducibility

Source code in tgb/utils/utils.py

def set_random_seed(seed: int):
    r"""
    setting random seed for reproducibility
    """
    np.random.seed(seed)
    random.seed(seed)
    os.environ["PYTHONHASHSEED"] = str(seed)

BColors

A class to change the colors of the strings.

Source code in tgb/utils/info.py

class BColors:
    """
    A class to change the colors of the strings.
    """

    HEADER = "\033[95m"
    OKBLUE = "\033[94m"
    OKCYAN = "\033[96m"
    OKGREEN = "\033[92m"
    WARNING = "\033[93m"
    FAIL = "\033[91m"
    ENDC = "\033[0m"
    BOLD = "\033[1m"
    UNDERLINE = "\033[4m"

script for generating statistics from the dataset

plot_curve(y, outname)

plot the training curve given y Parameters: y: np.ndarray, the training curve outname: str, the output name

Source code in tgb/utils/stats.py

def plot_curve(y: np.ndarray, outname: str) -> None:
    """
    plot the training curve given y
    Parameters:
        y: np.ndarray, the training curve
        outname: str, the output name
    """
    plt.plot(y, color="#fc4e2a")
    plt.savefig(outname + ".pdf")
    plt.close()