finclaw

分类: 数据与AI | 上传者: NeuZhou | 下载: 0 | 版本: v1.0（最新）

**AI-Powered Financial Intelligence Engine — 8 Master Strategies, 5 Markets, 100+ Tests** WHEN: run `finclaw` commands, run or write tests. Triggers: use finclaw, install finclaw, how to use finclaw,

更新日志: Source: GitHub https://github.com/NeuZhou/finclaw

目录结构

当前层级: 根目录

📁 .github/
- 📁 workflows/
  - 📄 ci.yml 1.5 KB
  - 📄 publish.yml 540 B
📁 _scratch/
- 📁 benchmarks/
  - 📄 benchmark_100w.py 8.3 KB
  - 📄 benchmark_5year.py 8.9 KB
  - 📄 benchmark_ashare_top.py 7.6 KB
  - 📄 benchmark_final.py 7.8 KB
  - 📄 benchmark_final_comparison.py 8.5 KB
  - 📄 benchmark_llm_picker.py 5.2 KB
  - 📄 benchmark_masters.py 10.9 KB
  - 📄 benchmark_realistic.py 5.8 KB
  - 📄 benchmark_smartpicker.py 5.8 KB
  - 📄 benchmark_ultimate.py 17.9 KB
  - 📄 benchmark_ultra.py 9.7 KB
  - 📄 benchmark_v7.py 7.0 KB
- 📄 _analysis_v7.py 3.9 KB
- 📄 _analyze_ahf.py 2.8 KB
- 📄 _compare_hard.py 3.0 KB
- 📄 _compare_v7_v8.py 3.2 KB
- 📄 _debug_aapl.py 1.5 KB
- 📄 _debug_amzn.py 836 B
- 📄 _debug_bh.py 450 B
- 📄 _debug_btc.py 1.3 KB
- 📄 _debug_bull.py 1.8 KB
- 📄 _debug_eth.py 1.4 KB
- 📄 _debug_eth_regime.py 1.9 KB
- 📄 _debug_meta_short.py 1.5 KB
- 📄 _debug_new.py 1.6 KB
- 📄 _debug_nvda2.py 655 B
- 📄 _debug_nvda3.py 646 B
- 📄 _debug_nvda4.py 674 B
- 📄 _debug_nvda_v5.py 1.8 KB
- 📄 _debug_path.py 1.2 KB
- 📄 _debug_signals.py 1.1 KB
- 📄 _debug_sol.py 1.4 KB
- 📄 _debug_tsla.py 1.5 KB
- 📄 _debug_vrecovery.py 1.5 KB
- 📄 _diag.py 1.1 KB
- 📄 _diag_aapl2.py 1.7 KB
- 📄 _diag_ahf.py 2.5 KB
- 📄 _diag_crypto.py 1.7 KB
- 📄 _diag_eth.py 2.4 KB
- 📄 _diag_moutai.py 1.5 KB
- 📄 _diag_moutai2.py 2.4 KB
- 📄 _diag_moutai3.py 2.1 KB
- 📄 _diag_nvda_amzn.py 2.1 KB
- 📄 _diag_v7.py 2.0 KB
- 📄 _diagnose_alpha.py 2.7 KB
- 📄 _exp_nosignal.py 3.0 KB
- 📄 _find_seeds.py 1.4 KB
- 📄 _optimize_weights.py 5.4 KB
- 📄 _quick_bench.py 2.2 KB
- 📄 _regimes.py 828 B
- 📄 _stress_test.py 2.5 KB
- 📄 _test_ai.py 2.2 KB
- 📄 _test_short.py 2.4 KB
- 📄 _test_v3.py 2.2 KB
- 📄 _trace_aapl.py 1.5 KB
- 📄 _trace_eth.py 1.4 KB
- 📄 _trace_moutai.py 2.4 KB
- 📄 _trace_moutai4.py 2.0 KB
- 📄 _verify_all_strategies.py 1.0 KB
- 📄 _verify_markets.py 893 B
- 📄 backtest.py 5.2 KB
- 📄 backtest_advanced.py 10.2 KB
- 📄 backtest_comprehensive.py 23.7 KB
- 📄 backtest_final.py 7.8 KB
- 📄 backtest_optimize.py 19.7 KB
- 📄 backtester_v2.py 15.8 KB
- 📄 backtester_v3.py 13.8 KB
- 📄 backtester_v4.py 15.5 KB
- 📄 backtester_v5.py 17.1 KB
- 📄 backtester_v7plus.py 14.2 KB
- 📄 backtester_v8.py 17.9 KB
- 📄 backtester_v9.py 12.4 KB
- 📄 benchmark_fair.py 7.5 KB
- 📄 benchmark_portfolio.py 8.6 KB
- 📄 benchmark_portfolio2.py 6.4 KB
- 📄 benchmark_portfolio3.py 10.5 KB
- 📄 benchmark_portfolio3b.py 10.8 KB
- 📄 benchmark_v5.py 7.2 KB
- 📄 benchmark_v6.py 6.8 KB
- 📄 benchmark_v8.py 7.0 KB
- 📄 benchmark_v9.py 7.5 KB
- 📄 debug_amzn.py 1.2 KB
- 📄 debug_detailed.py 1.3 KB
- 📄 debug_scenarios.py 1.3 KB
- 📄 debug_signals.py 843 B
- 📄 debug_tsla.py 1.0 KB
- 📄 LAUNCH_PLAN.md 6.4 KB
- 📄 MARKETING_STRATEGY.md 5.6 KB
- 📄 README.md 713 B
- 📄 signal_engine_v5.py 9.9 KB
- 📄 signal_engine_v6.py 14.6 KB
- 📄 signal_engine_v8.py 17.9 KB
- 📄 signal_engine_v9.py 9.4 KB
- 📄 VISIBILITY-PLAN.md 3.5 KB
- 📄 whale.py 6.1 KB
📁 agents/
- 📄 __init__.py 624 B
- 📄 ahf_simulator.py 13.3 KB
- 📄 ai_client.py 9.7 KB
- 📄 backtester.py 23.5 KB
- 📄 backtester_v7.py 19.5 KB
- 📄 debate_arena.py 17.9 KB
- 📄 deep_macro.py 14.7 KB
- 📄 llm_analyzer.py 10.5 KB
- 📄 macro_analyzer.py 10.0 KB
- 📄 memory.py 9.2 KB
- 📄 registry.py 6.0 KB
- 📄 risk_constitution.py 8.4 KB
- 📄 signal_engine.py 27.3 KB
- 📄 signal_engine_v7.py 22.1 KB
- 📄 signal_engine_v9.py 9.4 KB
- 📄 statistics.py 16.7 KB
- 📄 stock_picker.py 8.7 KB
- 📄 universe.py 11.1 KB
📁 dashboard/
- 📁 app/
  - 📄 globals.css 964 B
  - 📄 layout.tsx 699 B
  - 📄 page.tsx 32.6 KB
- 📄 next-env.d.ts 268 B
- 📄 next.config.js 91 B
- 📄 package-lock.json 53.0 KB
- 📄 package.json 477 B
- 📄 postcss.config.js 72 B
- 📄 tsconfig.json 562 B
📁 docs/
- 📁 tutorials/
  - 📄 custom-strategy.md 3.5 KB
  - 📄 first-backtest.md 3.3 KB
  - 📄 quickstart.md 1.8 KB
  - 📄 risk-management.md 5.3 KB
- 📄 api-reference.md 18.1 KB
- 📄 api.md 7.8 KB
- 📄 architecture.md 7.8 KB
- 📄 ECOSYSTEM.md 6.6 KB
- 📄 README_fr.md 1.7 KB
- 📄 README_ja.md 1.9 KB
- 📄 README_ko.md 1.7 KB
- 📄 README_zh.md 3.1 KB
- 📄 RESEARCH.md 3.8 KB
- 📄 UPGRADE-V02.md 6.7 KB
- 📄 V03-DIAGNOSIS.md 5.8 KB
📁 engine/
- 📁 src/
  - 📁 core/
    
    📄 engine.rs 3.4 KB
    
    📄 mod.rs 31 B
    
    📄 types.rs 9.1 KB
  - 📁 data/
    
    📄 mod.rs 18 B
    
    📄 provider.rs 7.9 KB
  - 📁 exchange/
    
    📄 mod.rs 15 B
    
    📄 paper.rs 8.3 KB
  - 📄 lib.rs 245 B
  - 📄 main.rs 3.3 KB
- 📄 Cargo.lock 60.4 KB
- 📄 Cargo.toml 942 B
📁 examples/
- 📄 backtest_momentum.py 1.1 KB
- 📄 custom_strategy.py 1010 B
- 📄 ml_pipeline.py 993 B
- 📄 portfolio_optimization.py 819 B
- 📄 screen_oversold.py 476 B
📁 references/
- 📄 README.md 12.2 KB
📁 src/
- 📁 agents/
  - 📄 __init__.py 150 B
  - 📄 base.py 4.5 KB
  - 📄 momentum.py 5.3 KB
  - 📄 value.py 4.2 KB
- 📁 alerts/
  - 📄 __init__.py 449 B
  - 📄 alert_engine.py 4.0 KB
  - 📄 alert_manager.py 7.6 KB
- 📁 analytics/
  - 📄 __init__.py 850 B
  - 📄 attribution.py 2.7 KB
  - 📄 benchmark.py 6.7 KB
  - 📄 correlation.py 9.3 KB
  - 📄 drawdown.py 7.2 KB
  - 📄 execution.py 3.8 KB
  - 📄 liquidity.py 4.3 KB
  - 📄 metrics.py 5.3 KB
  - 📄 regime.py 3.3 KB
  - 📄 rolling.py 1.3 KB
  - 📄 sensitivity.py 6.4 KB
  - 📄 tax_calculator.py 7.7 KB
  - 📄 tca.py 7.8 KB
  - 📄 trade_analyzer.py 6.6 KB
- 📁 api/
  - 📄 __init__.py 192 B
  - 📄 server.py 5.8 KB
  - 📄 webhooks.py 4.0 KB
- 📁 backtesting/
  - 📄 __init__.py 2.0 KB
  - 📄 benchmark.py 4.6 KB
  - 📄 benchmarks.py 7.9 KB
  - 📄 commission.py 2.7 KB
  - 📄 compare.py 6.2 KB
  - 📄 event_engine.py 10.6 KB
  - 📄 monte_carlo.py 4.5 KB
  - 📄 multi_timeframe.py 3.8 KB
  - 📄 overfit_check.py 8.7 KB
  - 📄 realistic.py 24.1 KB
  - 📄 slippage.py 2.1 KB
  - 📄 survivorship.py 7.0 KB
  - 📄 walk_forward.py 6.0 KB
  - 📄 walk_forward_v2.py 9.3 KB
- 📁 crypto/
  - 📄 __init__.py 257 B
  - 📄 onchain.py 4.0 KB
  - 📄 rebalancer.py 5.6 KB
- 📁 dashboard/
  - 📄 __init__.py 220 B
  - 📄 interactive.py 11.5 KB
  - 📄 risk_dashboard.py 8.4 KB
  - 📄 signals.py 5.6 KB
- 📁 data/
  - 📄 __init__.py 620 B
  - 📄 cache.py 4.3 KB
  - 📄 data_router.py 10.3 KB
  - 📄 earnings.py 7.2 KB
  - 📄 economic_calendar.py 7.0 KB
  - 📄 market_calendar.py 4.7 KB
  - 📄 market_store.py 5.7 KB
  - 📄 multi_asset.py 5.5 KB
  - 📄 prices.py 7.2 KB
  - 📄 quality.py 10.5 KB
  - 📄 streaming.py 7.0 KB
- 📁 defi/
  - 📄 __init__.py 120 B
  - 📄 yield_tracker.py 5.0 KB
- 📁 derivatives/
  - 📄 __init__.py 367 B
  - 📄 greeks.py 4.0 KB
  - 📄 options_pricing.py 5.5 KB
  - 📄 vol_surface.py 3.5 KB
- 📁 events/
  - 📄 __init__.py 108 B
  - 📄 event_bus.py 3.2 KB
- 📁 exchange/
  - 📄 __init__.py 215 B
  - 📄 paper.py 7.4 KB
- 📁 exchanges/
  - 📄 __init__.py 614 B
  - 📄 akshare_adapter.py 5.2 KB
  - 📄 alpha_vantage.py 2.9 KB
  - 📄 base.py 1.6 KB
  - 📄 binance.py 4.3 KB
  - 📄 binance_ws.py 4.3 KB
  - 📄 bybit.py 4.3 KB
  - 📄 bybit_ws.py 3.7 KB
  - 📄 data_aggregator.py 5.6 KB
  - 📄 http_client.py 2.8 KB
  - 📄 okx.py 4.7 KB
  - 📄 okx_ws.py 2.9 KB
  - 📄 registry.py 2.4 KB
  - 📄 tushare_adapter.py 2.9 KB
  - 📄 ws_client.py 7.2 KB
  - 📄 yahoo_finance.py 3.3 KB
- 📁 execution/
  - 📄 __init__.py 192 B
  - 📄 order_router.py 3.4 KB
- 📁 export/
  - 📄 __init__.py 115 B
  - 📄 exporter.py 4.8 KB
- 📁 fixed_income/
  - 📄 __init__.py 100 B
  - 📄 yield_curve.py 2.3 KB
- 📁 journal/
  - 📄 __init__.py 143 B
  - 📄 trade_journal.py 4.3 KB
- 📁 ml/
  - 📄 __init__.py 999 B
  - 📄 alpha.py 3.2 KB
  - 📄 data_splitter.py 4.3 KB
  - 📄 ensemble.py 9.4 KB
  - 📄 factor_model.py 8.2 KB
  - 📄 feature_pipeline.py 4.7 KB
  - 📄 feature_store.py 10.0 KB
  - 📄 features.py 13.4 KB
  - 📄 model_selection.py 7.8 KB
  - 📄 models.py 9.0 KB
  - 📄 news_sentiment.py 5.3 KB
  - 📄 pipeline.py 7.5 KB
  - 📄 prediction_tracker.py 4.0 KB
  - 📄 regime_detector.py 5.2 KB
  - 📄 sentiment.py 3.0 KB
- 📁 notifications/
  - 📄 __init__.py 697 B
  - 📄 base.py 839 B
  - 📄 console.py 1.4 KB
  - 📄 discord.py 1.5 KB
  - 📄 email_channel.py 1.6 KB
  - 📄 hub.py 2.4 KB
  - 📄 smart_alerts.py 9.2 KB
  - 📄 telegram.py 1.6 KB
  - 📄 webhook.py 4.8 KB
- 📁 optimization/
  - 📄 __init__.py 117 B
  - 📄 optimizer.py 9.2 KB
- 📁 pipeline/
  - 📄 __init__.py 210 B
  - 📄 cache.py 5.9 KB
  - 📄 multi_source.py 2.7 KB
  - 📄 validator.py 3.0 KB
- 📁 plugins/
  - 📁 examples/
    
    📄 __init__.py 18 B
    
    📄 custom_exchange_plugin.py 2.1 KB
    
    📄 mean_reversion_plugin.py 2.6 KB
    
    📄 rsi_divergence_plugin.py 3.7 KB
  - 📄 __init__.py 399 B
  - 📄 exchange_plugin.py 1.4 KB
  - 📄 indicator_plugin.py 1.9 KB
  - 📄 manager.py 4.8 KB
  - 📄 plugin_base.py 878 B
  - 📄 plugin_manager.py 10.8 KB
  - 📄 strategy_plugin.py 2.4 KB
- 📁 portfolio/
  - 📄 __init__.py 662 B
  - 📄 attribution.py 9.8 KB
  - 📄 optimizer.py 13.9 KB
  - 📄 rebalancer.py 13.0 KB
  - 📄 tax_tracker.py 8.1 KB
  - 📄 tracker.py 6.8 KB
- 📁 reports/
  - 📄 __init__.py 406 B
  - 📄 backtest_report.py 9.9 KB
  - 📄 html_report.py 13.4 KB
  - 📄 pdf_report.py 3.8 KB
  - 📄 performance_report.py 12.6 KB
  - 📄 report_card.py 12.2 KB
- 📁 risk/
  - 📄 __init__.py 648 B
  - 📄 advanced_metrics.py 5.0 KB
  - 📄 portfolio_risk.py 3.5 KB
  - 📄 position_sizer.py 4.8 KB
  - 📄 position_sizing.py 3.1 KB
  - 📄 risk_budget.py 4.4 KB
  - 📄 stop_loss.py 3.0 KB
  - 📄 stress_test.py 4.1 KB
  - 📄 var_calculator.py 2.6 KB
- 📁 sandbox/
  - 📄 __init__.py 157 B
  - 📄 strategy_sandbox.py 8.2 KB
- 📁 screener/
  - 📄 __init__.py 117 B
  - 📄 stock_screener.py 4.5 KB
- 📁 simulation/
  - 📄 __init__.py 177 B
  - 📄 scenarios.py 6.1 KB
- 📁 strategies/
  - 📄 __init__.py 1000 B
  - 📄 combiner.py 5.2 KB
  - 📄 crypto_strategies.py 8.2 KB
  - 📄 mean_reversion.py 3.4 KB
  - 📄 momentum_jt.py 3.1 KB
  - 📄 pairs_trading.py 4.1 KB
  - 📄 regime_adaptive.py 6.5 KB
  - 📄 sector_rotation.py 5.0 KB
  - 📄 signal_combiner.py 5.4 KB
  - 📄 trend_following.py 4.8 KB
  - 📄 value_momentum.py 3.9 KB
- 📁 ta/
  - 📄 __init__.py 8.9 KB
  - 📄 indicators.py 72 B
  - 📄 multi_timeframe.py 5.0 KB
  - 📄 realtime_ta.py 6.7 KB
- 📁 trading/
  - 📄 __init__.py 565 B
  - 📄 dashboard.py 4.0 KB
  - 📄 live_engine.py 9.5 KB
  - 📄 oms.py 6.5 KB
  - 📄 paper_trader.py 8.6 KB
  - 📄 paper_trading.py 8.1 KB
  - 📄 risk_guard.py 8.0 KB
- 📁 utils/
  - 📄 __init__.py 100 B
  - 📄 logger.py 4.1 KB
- 📁 watchlist/
  - 📄 __init__.py 159 B
  - 📄 manager.py 3.7 KB
- 📄 __init__.py 97 B
- 📄 cli.py 33.1 KB
- 📄 config.py 9.3 KB
- 📄 config_manager.py 5.3 KB
- 📄 interactive.py 11.7 KB
📁 strategies/
- 📁 builtin/
  - 📄 ai-sentiment-reversal.yaml 1.8 KB
  - 📄 bollinger-squeeze.yaml 1.3 KB
  - 📄 dca-smart.yaml 1.5 KB
  - 📄 golden-cross-momentum.yaml 1.1 KB
  - 📄 grid-trading.yaml 1.4 KB
  - 📄 macd-divergence.yaml 1.4 KB
  - 📄 multi-timeframe-trend.yaml 1.8 KB
  - 📄 rsi-mean-reversion.yaml 1.0 KB
  - 📄 volume-profile-breakout.yaml 1.3 KB
- 📄 __init__.py 34 B
- 📄 strategy_spec.py 5.3 KB
📁 tests/
- 📄 __init__.py 21 B
- 📄 conftest.py 1.7 KB
- 📄 test_asset_selector.py 2.3 KB
- 📄 test_backtester.py 3.1 KB
- 📄 test_cli.py 2.9 KB
- 📄 test_deep_qa.py 8.2 KB
- 📄 test_derivatives.py 10.5 KB
- 📄 test_drawdown.py 3.2 KB
- 📄 test_engine.py 9.7 KB
- 📄 test_exhaustive.py 11.3 KB
- 📄 test_integration.py 7.0 KB
- 📄 test_macro.py 703 B
- 📄 test_mcp.py 3.1 KB
- 📄 test_new_sectors.py 4.5 KB
- 📄 test_picker.py 8.7 KB
- 📄 test_plugins_v43.py 16.3 KB
- 📄 test_registry.py 724 B
- 📄 test_round6.py 12.0 KB
- 📄 test_sector_rotation.py 3.6 KB
- 📄 test_signal_combiner.py 3.3 KB
- 📄 test_signal_engine.py 4.2 KB
- 📄 test_stock_picker.py 1.5 KB
- 📄 test_strategy.py 14.4 KB
- 📄 test_trade_analyzer.py 4.1 KB
- 📄 test_universe.py 862 B
- 📄 test_v120.py 18.7 KB
- 📄 test_v130.py 16.2 KB
- 📄 test_v140.py 11.7 KB
- 📄 test_v150.py 15.9 KB
- 📄 test_v170.py 12.5 KB
- 📄 test_v180.py 14.2 KB
- 📄 test_v210.py 13.4 KB
- 📄 test_v220.py 12.5 KB
- 📄 test_v230.py 24.5 KB
- 📄 test_v240.py 12.3 KB
- 📄 test_v260.py 12.9 KB
- 📄 test_v270.py 10.9 KB
- 📄 test_v280.py 13.1 KB
- 📄 test_v290.py 20.5 KB
- 📄 test_v320.py 9.8 KB
- 📄 test_v330.py 15.7 KB
- 📄 test_v340.py 14.2 KB
- 📄 test_v350.py 12.6 KB
- 📄 test_v360.py 13.1 KB
- 📄 test_v380.py 14.2 KB
- 📄 test_v400.py 24.5 KB
- 📄 test_v420.py 19.4 KB
- 📄 test_v440.py 17.0 KB
- 📄 test_v450.py 16.6 KB
- 📄 test_websocket.py 20.7 KB
📄 .env.example 533 B
📄 .gitignore 384 B
📄 ARCHITECTURE.md 6.2 KB
📄 benchmark_multimarket.py 7.0 KB
📄 benchmark_real.py 4.2 KB
📄 benchmark_v10.py 14.0 KB
📄 CHANGELOG.md 12.4 KB
📄 COMPETITIVE_ANALYSIS.md 4.0 KB
📄 conftest.py 227 B
📄 CONTRIBUTING.md 3.0 KB
📄 daily_alert.py 5.0 KB
📄 docker-compose.yml 471 B
📄 Dockerfile 398 B
📄 finclaw.py 28.4 KB
📄 finclaw.yml 460 B
📄 LICENSE 1.1 KB
📄 main.py 5.1 KB
📄 Makefile 141 B
📄 MANIFEST.in 503 B
📄 mcp_server.py 6.4 KB
📄 PERFORMANCE_REPORT.md 7.4 KB
📄 pyproject.toml 2.0 KB
📄 README.md 12.9 KB
📄 requirements.txt 31 B
📄 RESEARCH_NOTES.md 3.1 KB
📄 SKILL.md 1.8 KB
📄 telegram_bot.py 8.1 KB
📄 uv.lock 626.1 KB

SKILL.md

---
name: finclaw
description: **AI-Powered Financial Intelligence Engine — 8 Master Strategies, 5 Markets, 100+ Tests** WHEN: run `finclaw` commands, run or write tests. Triggers: use finclaw, install finclaw, how to use finclaw, 
generated_at: "2026-03-16T10:57:32.789Z"
---

# finclaw

**AI-Powered Financial Intelligence Engine — 8 Master Strategies, 5 Markets, 100+ Tests**

## When to Use

- Run `finclaw` commands
- Run or write tests

## When NOT to Use

- GUI or web-based workflows where CLI is not available
- Projects using Go or Java (different ecosystem)

## Quick Start

### Install

```bash
pip install finclaw-ai
```

## CLI Commands

- `finclaw`

## Key Features

- Trading support
- Quant support
- Finance support
- Agent support
- Test suite included

## Key API

- `get_agent`
- `list_agents`
- `BUILTIN_AGENTS`
- `DebateArena`
- `DebateResult`
- `DebateStatement`
- `DebatePhase`
- `Backtester`
- `BacktestResult`
- `compare_strategies`

## Project Info

- **Language:** C, Python, Rust, TypeScript, JavaScript
- **License:** AGPL-3.0-only
- **Tests:** Yes

## File Structure

```
├── _scratch/
│   ├── benchmarks/
│   ├── _analysis_v7.py
│   ├── _analyze_ahf.py
│   ├── _compare_hard.py
│   ├── _compare_v7_v8.py
│   ├── _debug_aapl.py
│   ├── _debug_amzn.py
│   ├── _debug_bh.py
│   ├── _debug_btc.py
│   ├── _debug_bull.py
│   ├── _debug_eth_regime.py
│   ├── _debug_eth.py
│   ├── _debug_meta_short.py
│   ├── _debug_new.py
│   ├── _debug_nvda_v5.py
│   ├── _debug_nvda2.py
│   ├── _debug_nvda3.py
│   ├── _debug_nvda4.py
│   ├── _debug_path.py
```

> Generated by [repo2skill](https://github.com/NeuZhou/repo2skill)

登录后下载/点赞/收藏 ❤ 6 | ★ 0

finclaw

目录结构

SKILL.md

举报内容

提示