In [139]: data = pd.read_csv('examples/macrodata.csv') In [140]: data.head() Out[140]: year quarter realgdp realcons realinv realgovt realdpi cpi \ 0 1959.0 1.0 2710.349 1707.4 286.898 470.045 1886.9 28.98 1 1959.0 2.0 2778.801 1733.7 310.859 481.301 1919.7 29.15 2 1959.0 3.0 2775.488 1751.8 289.226 491.260 1916.4 29.35 3 1959.0 4.0 2785.204 1753.7 299.356 484.052 1931.3 29.37 4 1960.0 1.0 2847.699 1770.5 331.722 462.199 1955.5 29.54 m1 tbilrate unemp pop infl realint 0 139.7 2.82 5.8 177.146 0.00 0.00 1 141.7 3.08 5.1 177.830 2.34 0.74 2 140.5 3.82 5.3 178.657 2.74 1.09 3 140.0 4.33 5.6 179.386 0.27 4.06 4 139.6 3.50 5.2 180.007 2.31 1.19 In [141]: periods = pd.PeriodIndex(year=data.year, quarter=data.quarter, .....: name='date') In [142]: columns = pd.Index(['realgdp', 'infl', 'unemp'], name='item') In [143]: data = data.reindex(columns=columns) In [144]: data.index = periods.to_timestamp('D', 'end') In [145]: ldata = data.stack().reset_index().rename(columns={0: 'value'})

有以下一段代码（代码被'''符号包围）： ''' def tokenize_src(text): return [tok.text for tok in src_lang_model.tokenizer(text)] def tokenize_trg(text): return [tok.text for tok in trg_lang_model.tokenizer(text)] SRC = torchtext.data.Field( tokenize=tokenize_src, lower=not opt.keep_case, pad_token=Constants.PAD_WORD, init_token=Constants.BOS_WORD, eos_token=Constants.EOS_WORD) TRG = torchtext.data.Field( tokenize=tokenize_trg, lower=not opt.keep_case, pad_token=Constants.PAD_WORD, init_token=Constants.BOS_WORD, eos_token=Constants.EOS_WORD) MAX_LEN = opt.max_len MIN_FREQ = opt.min_word_count if not all([opt.data_src, opt.data_trg]): assert {opt.lang_src, opt.lang_trg} == {'de', 'en'} else: # Pack custom txt file into example datasets raise NotImplementedError def filter_examples_with_length(x): return len(vars(x)['src']) <= MAX_LEN and len(vars(x)['trg']) <= MAX_LEN train, val, test = torchtext.datasets.Multi30k.splits( exts = ('.' + opt.lang_src, '.' + opt.lang_trg), fields = (SRC, TRG), filter_pred=filter_examples_with_length) SRC.build_vocab(train.src, min_freq=MIN_FREQ) ''' 现在你是一名python专家，请你在仔细阅读以上代码之后，认真告诉我tokenize_src函数中的参数text是谁传递过去的，以及传递的流程是什么样的

最后，代码中有一个if-else语句，用于判断opt.data_src和opt.data_trg是否都存在。如果不存在，要求opt.lang_src和opt.lang_trg必须为de和en中的一个。如果存在，则执行下一步操作（未给出代码）。

import time import tensorflow.compat.v1 as tf tf.disable_v2_behavior() from tensorflow.examples.tutorials.mnist import input_data import mnist_inference import mnist_train tf.compat.v1.reset_default_graph() EVAL_INTERVAL_SECS = 10 def evaluate(mnist): with tf.Graph().as_default() as g: #定义输入与输出的格式 x = tf.compat.v1.placeholder(tf.float32, [None, mnist_inference.INPUT_NODE], name='x-input') y_ = tf.compat.v1.placeholder(tf.float32, [None, mnist_inference.OUTPUT_NODE], name='y-input') validate_feed = {x: mnist.validation.images, y_: mnist.validation.labels} #直接调用封装好的函数来计算前向传播的结果 y = mnist_inference.inference(x, None) #计算正确率 correcgt_prediction = tf.equal(tf.argmax(y, 1), tf.argmax(y_, 1)) accuracy = tf.reduce_mean(tf.cast(correcgt_prediction, tf.float32)) #通过变量重命名的方式加载模型 variable_averages = tf.train.ExponentialMovingAverage(0.99) variable_to_restore = variable_averages.variables_to_restore() saver = tf.train.Saver(variable_to_restore) #每隔10秒调用一次计算正确率的过程以检测训练过程中正确率的变化 while True: with tf.compat.v1.Session() as sess: ckpt = tf.train.get_checkpoint_state(minist_train.MODEL_SAVE_PATH) if ckpt and ckpt.model_checkpoint_path: #load the model saver.restore(sess, ckpt.model_checkpoint_path) global_step = ckpt.model_checkpoint_path.split('/')[-1].split('-')[-1] accuracy_score = sess.run(accuracy, feed_dict=validate_feed) print("After %s training steps, validation accuracy = %g" % (global_step, accuracy_score)) else: print('No checkpoint file found') return time.sleep(EVAL_INTERVAL_SECS) def main(argv=None): mnist = input_data.read_data_sets(r"D:\Anaconda123\Lib\site-packages\tensorboard\mnist", one_hot=True) evaluate(mnist) if name == 'main': tf.compat.v1.app.run()对代码进行改进

from tensorflow.examples.tutorials.mnist import input_data import mnist_inference import mnist_train # 定义常量 MODEL_SAVE_PATH = 'model/' EVAL_INTERVAL_SECS = 10 def evaluate(mnist): """ 计算模型...

mnist = input_data.read_data_sets('../../MNIST_data', one_hot=True)

mnist = input_data.read_data_sets('../../MNIST_data', one_hot=True) 这样，MNIST 数据集就被成功地读取到了名为 mnist 的对象中，我们可以使用它来获取训练集、验证集和测试集的数据和标签。例如，mnist...

from sklearn.decomposition import PCA from sklearn.cluster import KMeans from sklearn.metrics import accuracy_score import numpy as np import matplotlib.pyplot as plt from tensorflow.examples.tutorials.mnist import input_data import datetime # 导入数据集 start = datetime.datetime.now() #计算程序运行时间 mnist = input_data.read_data_sets("MNIST_data/", one_hot=True) X_train = mnist.train.images y_train = mnist.train.labels X_test = mnist.test.images y_test = mnist.test.labels #PCA降维 pca = PCA(n_components=10) X_train_pca = pca.fit_transform(X_train) X_test_pca = pca.fit_transform(X_test) # 可视化 plt.scatter(X_train_pca[:, 0], X_train_pca[:, 1], c=np.argmax(y_train, axis=1)) plt.show() # K-means聚类 kmeans_centers = [] # 用于存储初始类中心 for i in range(10): idx = np.where(np.argmax(y_train, axis=1) == i)[0] # 获取第i类数字的索引列表 sample_idx = np.random.choice(idx) # 随机指定一个样本作为初始类中心 kmeans_centers.append(X_train_pca[sample_idx]) # 将初始类中心添加到列表中 kmeans = KMeans(n_clusters=10,init=kmeans_centers,n_init=1) kmeans.fit(X_train_pca) # 计算分类错误率 y_pred = kmeans.predict(X_test_pca) acc = accuracy_score(np.argmax(y_test, axis=1), y_pred) print("分类错误率：{:.2%}".format(1-acc)) # 计算程序运行时间 end = datetime.datetime.now() print("程序运行时间为:"+str((end-start).seconds)+"秒")优化这段代码，输出其中pca降维的因子负荷量

from tensorflow.examples.tutorials.mnist import input_data import datetime # 导入数据集 start = datetime.datetime.now() #计算程序运行时间 mnist = input_data.read_data_sets("MNIST_data/", one_hot=True...

./euroc_examples.sh: 行 7: ./Examples/Monocular/mono_euroc: 没有那个文件或目录

ls ./Examples/Monocular/mono_euroc 如果该文件或目录确实不存在，请确保您已正确下载和配置了示例代码。您可以尝试重新下载示例代码并确保文件完整。如果问题仍然存在，可能需要进一步检查您的环境配置和依赖项...

self.data = cm.read_array(C:\Users\JiaZ\Desktop\deep-finder-master (2)\deep-finder-master\examples\training\in\masks\1bxn.mrc)

finder-master (2)\deep-finder-master\examples\training\in\masks\1bxn.mrc是一个文件路径，read_array()函数会读取该路径下的文件，并将其转换为一个numpy数组，最后将该数组赋值给self.data。需要注意的...

下列选项中，哪一项是与示例相同源的？示例：http://example.com/dir2/page2.html A. https://example.com/dir/page.html B. http://example.com/index/page3/hello.html C. http://example.com:81/index/page.html D. http://examples.com/dirs/pages.html

同源策略是一种安全策略，浏览器只允许不同窗口的脚本在同一个源下运行，不同源的脚本之间无法相互访问。... http://examples.com/dirs/pages.html：域名不同，不同源。因此，选项 C 是与示例相同源的。

from torch.utils import data def load_data_nmt(batch_size, num_steps, num_examples=600): """返回翻译数据集的迭代器和词表""" with open(d2l.download('cmn-eng'), 'r') as f: lines = f.readlines() return lines num_lines = min(num_examples, len(raw_text.split('\n'))) text = raw_text.split('\n')[:num_lines] src_vocab, tgt_vocab = d2l.load_vocab('cmn-eng') src_iter= d2l.build_data_iter(text, src_vocab, tgt_vocab, batch_size, num_steps) return src_iter, src_vocab, tgt_vocab train_iter, src_vocab, tgt_vocab = load_data_nmt(batch_size=2, num_steps=8) for X, X_valid_len, Y, Y_valid_len in train_iter: print('X:', X.type(torch.int32)) print('X的有效长度:', X_valid_len) print('Y:', Y.type(torch.int32)) print('Y的有效长度:', Y_valid_len) break 报这个错误ValueError: not enough values to unpack (expected 3, got 2)

def load_data_nmt(batch_size, num_steps, num_examples=600): """返回翻译数据集的迭代器和词表""" with open(d2l.download('cmn-eng'), 'r') as f: lines = f.readlines() num_lines = min(num_examples, len...

import re import asyncio from aiohttp import TCPConnector, ClientSession import pyecharts.options as opts from pyecharts.charts import TreeMap """ Gallery 使用 pyecharts 1.1.0 参考地址: https://echarts.apache.org/examples/editor.html?c=treemap-drill-down 目前无法实现的功能: 1、层级的样式配置 """ async def get_json_data(url: str) -> dict: async with ClientSession(connector=TCPConnector(ssl=False)) as session: async with session.get(url=url) as response: return await response.json() # 获取官方的数据 data = asyncio.run( get_json_data( url="https://echarts.apache.org/examples/data/asset/data/" "ec-option-doc-statistics-201604.json" ) ) tree_map_data: dict = {"children": []} def convert(source, target, base_path: str): for key in source: if base_path != "": path = base_path + "." + key else: path = key if re.match(r"/^\$/", key): pass else: child = {"name": path, "children": []} target["children"].append(child) if isinstance(source[key], dict): convert(source[key], child, path) else: target["value"] = source["$count"] convert(source=data, target=tree_map_data, base_path="") ( TreeMap(init_opts=opts.InitOpts(width="1200px", height="720px")) .add( series_name="option", data=tree_map_data["children"], visual_min=300, leaf_depth=1, # 标签居中为 position = "inside" label_opts=opts.LabelOpts(position="inside"), ) .set_global_opts( legend_opts=opts.LegendOpts(is_show=False), title_opts=opts.TitleOpts( title="Echarts 配置项查询分布", subtitle="2016/04", pos_left="leafDepth" ), ) .render("echarts_option_query.html") )

这段代码是一个Python程序，它使用了多个第三方库和模块，包括re、asyncio、aiohttp、pyecharts等。这个程序的主要功能是获取一个JSON格式的数据，然后将其转换为树状图数据，并使用pyecharts库生成一个树状图的...

我的上一段代码是：# 数据集处理函数 def read(data_path): with open(data_path, 'r', encoding='utf-8') as f: lines = f.readlines() # 数据格式：每行为一个样本，格式为文本\t标签 examples = [] for line in lines: text, label = line.strip().split('\t') examples.append((text, int(label))) return examples # 数据集划分 train_ds = read('./data/Train.txt') test_ds = read('./data/Test.txt') train_ds, valid_ds = train_test_split(train_ds, test_size=0.2, random_state=1)

read函数读取文本数据集，并将每行的文本和标签分别存储在一个元组中，最后将所有元组存储在一个列表中，返回该列表。train_test_split函数将训练集划分为训练集和验证集，其中test_size=0.2表示将20%的数据划分为...

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./euroc_examples.sh: 行 7: ./Examples/Monocular/mono_euroc: 没有那个文件或目录

self.data = cm.read_array(C:\Users\JiaZ\Desktop\deep-finder-master (2)\deep-finder-master\examples\training\in\masks\1bxn.mrc)

下列选项中，哪一项是与示例相同源的？ 示例：http://example.com/dir2/page2.html A. https://example.com/dir/page.html B. http://example.com/index/page3/hello.html C. http://example.com:81/index/page.html D. http://examples.com/dirs/pages.html

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下列选项中，哪一项是与示例相同源的？示例：http://example.com/dir2/page2.html A. https://example.com/dir/page.html B. http://example.com/index/page3/hello.html C. http://example.com:81/index/page.html D. http://examples.com/dirs/pages.html