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- 鎬ц兘寮€閿€锛?/strong> 鏋勫缓鏁翠釜DOM鏍戞湰韬氨闇€瑕佹椂闂村拰璁＄畻璧勬簮銆?/li>
SAX (Simple API for XML) 瑙ｆ瀽鍣細
-
浼樼偣锛?/strong>
- 鍐呭瓨鏁堢巼楂橈細 SAX鏄簨浠堕┍鍔ㄧ殑銆傚畠涓嶄細灏嗘暣涓枃妗ｅ姞杞藉埌鍐呭瓨涓紝鑰屾槸閫愯璇诲彇锛屽苟鍦ㄩ亣鍒癤ML缁撴瀯涓殑鐗瑰畾浜嬩欢锛堝鍏冪礌寮€濮嬨€佸厓绱犵粨鏉熴€佹枃鏈唴瀹癸級鏃堕€氱煡浣犮€傝繖鎰忓懗鐫€瀹冪殑鍐呭瓨鍗犵敤鏋佷綆锛岄潪甯搁€傚悎澶勭悊瓒呭ぇ鍨媂ML鏂囦欢銆?/li>
- 澶勭悊閫熷害蹇細 鐢变簬涓嶆瀯寤哄畬鏁寸殑鍐呭瓨鏍戯紝SAX鍦ㄨВ鏋愰€熷害涓婇€氬父姣擠OM鏇村揩銆?/li>
- 娴佸紡澶勭悊锛?/strong> 閫傚悎浜庢暟鎹祦鐨勫満鏅紝渚嬪浠庣綉缁滄帴鏀禭ML鏁版嵁骞跺疄鏃跺鐞嗐€?/li>
-
缂虹偣锛?/strong>
- 缂栫▼澶嶆潅鎬ч珮锛?/strong> SAX瑕佹眰鎴戜滑鑷繁缂栧啓浜嬩欢澶勭悊鍣?/a>鏉ョ淮鎶よВ鏋愮姸鎬併€備緥濡傦紝濡傛灉浣犳兂鐭ラ亾褰撳墠瑙ｆ瀽鐨勫厓绱犲湪XML鏍戜腑鐨勫畬鏁磋矾寰勶紝浣犻渶瑕佽嚜宸辫窡韪埗瀛愬叧绯汇€傝繖浣垮緱浠ｇ爜閫昏緫鐩稿澶嶆潅锛屽鏄撳嚭閿欍€?/li>
- 鏃犳硶淇敼鏂囨。锛?/strong> SAX鏄彧璇荤殑锛屽畠鍙兘瑙ｆ瀽鍜屾姤鍛婁簨浠讹紝涓嶈兘鐢ㄦ潵淇敼XML鏂囨。銆?/li>
- 缂轰箯闅忔満璁块棶鑳藉姏锛?/strong> 鐢变簬鏄『搴忓鐞嗭紝浣犳棤娉曠洿鎺ヨ烦鍒版枃妗ｇ殑鏌愪釜閮ㄥ垎銆傚鏋滀綘闇€瑕佺殑淇℃伅鍦ㄦ枃妗ｇ殑涓嶅悓浣嶇疆锛屼綘鍙兘闇€瑕佸娆￠亶鍘嗘垨鏇村鏉傜殑閫昏緫鏉ュ叧鑱斿畠浠€?/li>
鍦ㄦ満鍣ㄥ涔犻澶勭悊鐨勮澧冧笅锛屽鏋滀綘鐨刋ML鏂囦欢涓嶅ぇ锛屾垨鑰呬綘闇€瑕佸XML缁撴瀯杩涜澶嶆潅鐨勫垎鏋愬拰鐗瑰緛缁勫悎锛孌OM锛堟垨绫讳技
ElementTree鐧诲綍鍚庡鍒?/div>杩欑鍏奸【鏄撶敤鎬у拰鎬ц兘鐨勫簱锛夊彲鑳戒細璁╀綘浜嬪崐鍔熷€嶃€備絾濡傛灉浣犵殑鏁版嵁鏄疶B绾у埆鐨勬棩蹇楁枃浠讹紝鎴栬€呬綘鍙渶瑕佷粠涓娊鍙栫壒瀹氱被鍨嬬殑鏁版嵁娴侊紝閭ｄ箞SAX鎴栧熀浜庢祦鐨勮В鏋愭柟妗堬紙渚嬪
lxml鐧诲綍鍚庡鍒?/div>鐨?div class="code" style="position:relative; padding:0px; margin:0px;">
iterparse鐧诲綍鍚庡鍒?/div>锛夊皢鏄洿鏄庢櫤鐨勯€夋嫨銆傝鍒板簳锛岄€夋嫨鍝瑙ｆ瀽鍣紝灏卞儚鏄€夋嫨涓€杈嗚溅锛屽緱鐪嬩綘瑕佽窇鐨勮矾鍐靛拰杩愰€佺殑璐х墿鏄粈涔堛€?/p> 灏哫ML鏁版嵁杞崲涓篜andas DataFrame鎴朜umPy鏁扮粍鐨勫疄鐢ㄦ柟娉?/h3>
灏哫ML鏁版嵁杞寲涓篜andas DataFrame鎴朜umPy鏁扮粍锛屾槸杩炴帴XML涓庢満鍣ㄥ涔犳ā鍨嬬殑妗ユ銆傛垜鍙戠幇锛岃繖涓繃绋嬬殑鍏抽敭鍦ㄤ簬灏哫ML鐨勫眰绾х粨鏋勨€滄墎骞冲寲鈥濅负琛ㄦ牸褰㈠紡銆?/p>
杞崲涓篜andas DataFrame锛?/strong>
杩欐槸鏈€甯哥敤涔熸渶鐏垫椿鐨勬柟娉曘€傚畠鐨勬牳蹇冩€濊矾鏄細閬嶅巻XML锛屼负姣忎釜鈥滄牱鏈€濇彁鍙栧嚭鎵€闇€鐨勬墍鏈夌壒寰侊紝灏嗚繖浜涚壒寰佺粍缁囨垚涓€涓瓧鍏革紝鐒跺悗灏嗚繖浜涘瓧鍏哥殑鍒楄〃杞寲涓篋ataFrame銆?/p>
鍋囪鎴戜滑鏈変竴涓猉ML鏂囦欢锛岄噷闈㈠寘鍚涓?div class="code" style="position:relative; padding:0px; margin:0px;">
<record>鐧诲綍鍚庡鍒?/div>锛屾瘡涓?div class="code" style="position:relative; padding:0px; margin:0px;">
<record>鐧诲綍鍚庡鍒?/div>鏈?div class="code" style="position:relative; padding:0px; margin:0px;">
<id>鐧诲綍鍚庡鍒?/div>銆?div class="code" style="position:relative; padding:0px; margin:0px;">
<name>鐧诲綍鍚庡鍒?/div>鍜?div class="code" style="position:relative; padding:0px; margin:0px;">
<value>鐧诲綍鍚庡鍒?/div>绛夋爣绛撅紝浠ュ強涓€涓?div class="code" style="position:relative; padding:0px; margin:0px;">
type鐧诲綍鍚庡鍒?/div>灞炴€э細
<data>
<record type="A">
<id>1</id>
<name>Item One</name>
<value>10.5</value>
<description>This is a description for item one.</description>
</record>
<record type="B">
<id>2</id>
<name>Item Two</name>
<value>20.0</value>
<tags>alpha, beta</tags>
</record>
<record type="A">
<id>3</id>
<name>Item Three</name>
<value>15.2</value>
<description>Another description.</description>
</record>
</data>鐧诲綍鍚庡鍒?/div>鎴戜滑鍙互杩欐牱澶勭悊锛堜娇鐢≒ython鐨?div class="code" style="position:relative; padding:0px; margin:0px;">
lxml鐧诲綍鍚庡鍒?/div>搴擄紝瀹冩€ц兘寰堝ソ锛夛細
from lxml import etree
import pandas as pd
xml_string = """
<data>
<record type="A">
<id>1</id>
<name>Item One</name>
<value>10.5</value>
<description>This is a description for item one.</description>
</record>
<record type="B">
<id>2</id>
<name>Item Two</name>
<value>20.0</value>
<tags>alpha, beta</tags>
</record>
<record type="A">
<id>3</id>
<name>Item Three</name>
<value>15.2</value>
<description>Another description.</description>
</record>
</data>
"""
root = etree.fromstring(xml_string)
records_data = []
# 閬嶅巻鎵€鏈?lt;record>鑺傜偣
for record_elem in root.xpath('//record'):
record_dict = {}
# 鎻愬彇灞炴€? record_dict['type'] = record_elem.get('type')
# 鎻愬彇瀛愭爣绛惧唴瀹? record_dict['id'] = record_elem.xpath('./id/text()')[0] if record_elem.xpath('./id/text()') else None
record_dict['name'] = record_elem.xpath('./name/text()')[0] if record_elem.xpath('./name/text()') else None
record_dict['value'] = float(record_elem.xpath('./value/text()')[0]) if record_elem.xpath('./value/text()') else None
# 瀵逛簬鍙兘涓嶅瓨鍦ㄧ殑鏍囩锛岄渶瑕佸仛None澶勭悊锛岄伩鍏岾eyError
description = record_elem.xpath('./description/text()')
record_dict['description'] = description[0] if description else None
tags = record_elem.xpath('./tags/text()')
record_dict['tags'] = tags[0] if tags else None
records_data.append(record_dict)
df = pd.DataFrame(records_data)
# 姝ゆ椂 df 宸茬粡鏄竴涓粨鏋勫寲鐨勮〃鏍?# df['value'] = pd.to_numeric(df['value']) # 纭繚鏁板€肩被鍨?# df['id'] = pd.to_numeric(df['id']) # 纭繚鏁板€肩被鍨?print(df)鐧诲綍鍚庡鍒?/div>鍦ㄨ繖涓緥瀛愪腑锛?div class="code" style="position:relative; padding:0px; margin:0px;">
df鐧诲綍鍚庡鍒?/div>浼氬寘鍚?div class="code" style="position:relative; padding:0px; margin:0px;">
type鐧诲綍鍚庡鍒?/div>,
id鐧诲綍鍚庡鍒?/div>,
name鐧诲綍鍚庡鍒?/div>,
value鐧诲綍鍚庡鍒?/div>,
description鐧诲綍鍚庡鍒?/div>,
tags鐧诲綍鍚庡鍒?/div>杩欎簺鍒椼€傚浜?div class="code" style="position:relative; padding:0px; margin:0px;">
description鐧诲綍鍚庡鍒?/div>鍜?div class="code" style="position:relative; padding:0px; margin:0px;">
tags鐧诲綍鍚庡鍒?/div>杩欑被鏂囨湰鐗瑰緛锛屽悗缁彲鑳借繕闇€瑕佽繘琛孴F-IDF鎴栬瘝宓屽叆澶勭悊锛岀劧鍚庡皢缁撴灉浣滀负鏂扮殑鍒楀姞鍏ataFrame銆?/p>
杞崲涓篘umPy鏁扮粍锛?/strong>
NumPy鏁扮粍閫氬父鏄満鍣ㄥ涔犳ā鍨嬬洿鎺ユ帴鍙楃殑杈撳叆鏍煎紡锛屼絾瀹冭姹傛墍鏈夋暟鎹兘鏄暟鍊肩被鍨嬨€傚洜姝わ紝鎴戜滑閫氬父浼氬厛灏嗘暟鎹暣鐞嗗埌Pandas DataFrame涓紝鐒跺悗杩涜鏁板€煎寲澶勭悊锛堝绫诲埆鐗瑰緛鐨勭嫭鐑紪鐮併€佹枃鏈壒寰佺殑鍚戦噺鍖栵級锛屾渶鍚庡啀杞崲涓篘umPy鏁扮粍銆?/p>
import numpy as np
# 鍋囪df鏄笂闈㈢敓鎴愮殑DataFrame
# 棣栧厛澶勭悊闈炴暟鍊煎垪
# 绀轰緥锛氬'type'杩涜鐙儹缂栫爜
df_processed = pd.get_dummies(df, columns=['type'], prefix='type')
# 绀轰緥锛氬鐞?description'鍜?tags'锛堣繖閲岀畝鍖栦负濉厖缂哄け鍊硷紝瀹為檯闇€杩涜鏂囨湰鍚戦噺鍖栵級
df_processed['description'] = df_processed['description'].fillna('')
df_processed['tags'] = df_processed['tags'].fillna('')
# 鍋囪鎴戜滑鍙敤鏁板€煎垪鍜岀嫭鐑紪鐮佸悗鐨勫垪鏉ヨ缁冩ā鍨?# 鎺掗櫎鏂囨湰鍒楀拰鍘熷ID/Name锛堝鏋滃畠浠笉鐩存帴浣滀负鐗瑰緛锛?features_df = df_processed[['id', 'value', 'type_A', 'type_B']]
# 纭繚鎵€鏈夊垪閮芥槸鏁板€肩被鍨?features_df = features_df.apply(pd.to_numeric, errors='coerce')
features_df = features_df.fillna(0) # 濉厖鍙兘鍥犱负coerce浜х敓鐨凬aN
X = features_df.to_numpy()
print("\nNumPy Array:")
print(X)鐧诲綍鍚庡鍒?/div>杩欓噷锛屾垜浠厛瀵?div class="code" style="position:relative; padding:0px; margin:0px;">
type鐧诲綍鍚庡鍒?/div>鍒楄繘琛屼簡鐙儹缂栫爜锛岀劧鍚庡皢
id鐧诲綍鍚庡鍒?/div>銆?div class="code" style="position:relative; padding:0px; margin:0px;">
value鐧诲綍鍚庡鍒?/div>浠ュ強缂栫爜鍚庣殑
type_A鐧诲綍鍚庡鍒?/div>銆?div class="code" style="position:relative; padding:0px; margin:0px;">
type_B鐧诲綍鍚庡鍒?/div>鍒楁彁鍙栧嚭鏉ワ紝鏈€缁堣浆鍖栦负NumPy鏁扮粍
X鐧诲綍鍚庡鍒?/div>銆傛枃鏈壒寰佺殑鍚戦噺鍖栫粨鏋滐紙姣斿涓€涓枃鏈钀借浆鎹㈡垚鐨?00缁村悜閲忥級涔熷彲浠ヤ綔涓?00涓柊鐨勫垪鍔犲叆DataFrame锛屽啀涓€骞惰浆鎹负NumPy鏁扮粍銆?/p>
鎴戜釜浜鸿寰楋紝杩欎釜杞崲杩囩▼鏈€閲嶈鐨勬槸鐏垫椿鎬?/strong>銆俋ML缁撴瀯鍗冨彉涓囧寲锛屾病鏈変竴濂椾唬鐮佽兘閫氬悆鎵€鏈夋儏鍐点€備綘闇€瑕佹牴鎹叿浣撶殑XML schema鍜屾満鍣ㄥ涔犱换鍔＄殑闇€姹傦紝瀹氬埗鍖栦綘鐨勮В鏋愬拰鐗瑰緛鎻愬彇閫昏緫銆傝繖灏卞儚鏄洉濉戯紝浣犲緱鏍规嵁鍘熸潗鏂欑殑褰㈢姸鍜屾渶缁堟兂瑕佺殑浣滃搧锛屽幓绮剧粏鍦版墦纾ㄣ€?/p>
浠ヤ笂灏辨槸XML濡備綍涓庢満鍣ㄥ涔犳暣鍚堬紵 XML鏍煎紡鏁版嵁鍦ㄦ満鍣ㄥ涔犺缁冧腑鐨勯澶勭悊鏂规硶鐨勮缁嗗唴瀹癸紝鏇村璇峰叧娉╬hp涓枃缃戝叾瀹冪浉鍏虫枃绔狅紒
鐩稿叧鏍囩锛?/span> word python 澶勭悊鍣?/a> 缂栫爜 app 宸ュ叿 鍖哄埆 xml瑙ｆ瀽 鍐呭瓨鍗犵敤 Python numpy pandas Object for xml 鍊肩被鍨?/a> 瀵硅薄 浜嬩欢 dom word2vec transformer bert 閲嶆瀯 澶у閮藉湪鐪嬶細 RSS璁㈤槄濡備綍鏍囪宸茶锛?RSS闃呰鍣ㄥ凡璇荤姸鎬佹爣璁颁笌鍚屾鐨勫疄鐜版柟娉?/a> SAX瑙ｆ瀽鍣ㄧ殑宸ヤ綔娴佺▼鏄€庢牱鐨勶紵 RSS闃呰鍣ㄧ晫闈㈠浣曡璁★紵 RSS闃呰鍣ㄥ浣曞疄鐜版洿鏂版彁閱掞紵 XML濡備綍琛ㄧず鍖栧缁撴瀯锛?/a>
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