MIT突破:電網優化新工具快速保證可行方案

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An ultra-realistic photograph of an Asian woman in the reference image, faithfully replicating my face and maintaining it 100%. A woman with a perfectly sculpted hourglass figure stands on the sand at sunset. She wears a white string bikini, measuring,+++ accentuating her curves with a well-defined waist, hips, and toned figure. Her skin is fair, smooth, and radiant.

She stands next to a large, ornate gold-framed mirror, perched upright on the sand, fully revealing her reflection. The reflection clearly emphasizes her silhouette, curves, and body proportions.

The lighting is cinematic and stunning, creating soft highlights on her skin and sharp shadow contrasts that enhance the shape of her waist, hips, and legs.

The background features a dusk sky with sunset tones of deep blue, purple, and orange, gentle clouds, and the silhouettes of palm trees.

A natural beach atmosphere, realistic textures, sharp focus on the woman's body and reflections, high detail, Ultra HD, artistic aesthetic, warm lighting, and low angle.
Create a hyper-realistic 8K close-up body portrait of a female model, using the uploaded photo as the exact facial reference. Maintain 100% accuracy of the facial features — do not alter or modify any aspect of the face. Render the skin texture, lighting, and overall composition with photo-realistic detail, ensuring lifelike color tones and natural depth of field. A man with his original hair is sitting casually on a white cube, smiling warmly at the camera. He is wearing a cream-colored cable-knit sweater, blue jeans, and brown loafers. His legs are crossed, with one hand resting on his knee.
The background reveals a cozy and festive living room. A large, beautifully decorated Christmas tree with numerous warm lights and gold ornaments stands prominently behind him. Several wrapped gift boxes are visible at the base of the tree. To his left, another smaller decorated Christmas tree and a wreath on the wall further enhance the holiday atmosphere. The lighting is soft and inviting, creating a warm and welcoming scene.
Base Setup
keep 100 percent facial information adherence of the attached image and turn her into a lone traveler posed on a sunlit desert dune ridge, captured as a live action photograph or movie still, not an illustration or CGI render, with a sexy, confident, heat soaked editorial mood.

Shot and Camera
Full body shot from slightly low height, framing her on the right third, with sweeping dunes rolling into the distance on the left, using a wide cinematic lens feel that keeps the landscape vast and minimal.

Identity and Pose
She has a slim, toned build, medium height impression, sun kissed skin, and long loose hair blown by the wind. She stands barefoot on the crest, one leg forward so the hip shifts naturally, one hand resting on her upper thigh and the other lightly gripping a sheer wrap at her side, wearing a high cut desert bikini with a gauzy open sarong that shows plenty of leg and midriff without nudity, head turned over her shoulder with a subtle, knowing smile, 8k Photorealistic and hyper realistic.

Lighting and Environment
Harsh midday sun from high right casts crisp shadows along her body and the dune ripples, with soft sky bounce filling the shadows enough to keep detail. The sand textures, wind carved ridges, and pale blue sky remain exactly like the reference, with faint footprints and slight imperfections grounding her on the slope.

Masking and Constraints
Change only by adding the subject and her wardrobe, keep dune shapes, lighting direction, perspective, horizon line, and white balance identical, preserving realistic body proportions and clear contact between her feet and the sand. Absolutely no added text, no painterly or toon look, no CGI plastic skin, no see through fabric on intimate areas, no warped limbs or floating feet, strictly require consistent perspective, natural film like grain, fine skin texture and sand detail, and physically correct contact shadows in the sand depressions around her feet.

麻省理工學院研發更快解決方案工具 保證問題可行性

麻省理工學院(MIT)最新開發嘅FSNet系統,可以幫助電網運營商更快速搵到優化電力流動嘅可行方案。

管理電網就好似拼砌一個龐大嘅拼圖。電網操作員需要確保喺正確嘅時間將適量嘅電力送到指定地區,而且要喺唔超載物理基建嘅前提下,盡量減低成本。更複雜嘅係,佢哋要不斷重複解決呢個複雜嘅問題,以應付瞬息萬變嘅需求。

為咗破解呢個長期難題,MIT嘅研究團隊開發咗一個新問題解決工具,佢比傳統方法快好多,仲能確保方案唔會違反系統嘅限制條件。喺電網裏面,限制條件可能係發電機同輸電線嘅容量。

呢個新工具喺一個強大嘅機器學習模型中加入咗「可行性尋找」步驟。模型會先做出預測,然後逐步修正,直到搵到最佳且可行嘅答案。

MIT系統解決複雜問題嘅速度比傳統求解器快幾倍,仲有強大嘅成功保證。對於極度複雜嘅問題,有時甚至能搵到比傳統方法更好嘅方案。呢個技術亦優於純機器學習方法,因為純機器學習雖然快,但唔一定能搵到可行方案。

除咗協助電網排程外,呢個工具仲可以應用喺設計新產品、管理投資組合或者規劃生產等多種複雜問題。

電機工程與計算機科學系(EECS)銀曼家族職業發展教授兼信息與決策系統實驗室(LIDS)首席研究員Priya Donti話:「要成功解決呢啲棘手問題,必須結合機器學習、優化同電機工程嘅工具,喺提供實際價值同符合需求之間取得平衡。你要了解應用需求,設計出真正符合需求嘅方法。」

Donti同EECS研究生Hoang Nguyen係呢篇開放存取論文《FSNet:具保證嘅約束優化可行性尋找神經網絡》嘅作者,論文會喺神經信息處理系統會議發表。

結合兩種方法

保證電網中嘅最佳電力流係一個極難問題,對操作員嚟講越來越難快速解決。

Donti解釋:「隨住更多可再生能源接入電網,發電量會不斷變動,操作員亦要協調大量分散嘅設備。」

傳統求解器能提供數學保證,確保方案不違反限制條件,但如果問題複雜,可能要花幾小時甚至幾日先有答案。

相反,深度學習模型可以喺極短時間內解決困難問題,但方案可能忽略重要限制,對電網來講可能導致電壓不安全甚至停電。

Nguyen指出:「機器學習模型因訓練過程中嘅誤差,難以完全滿足所有限制。」

FSNet就係將兩者優點結合,設計咗一個分兩步嘅解決框架。

重點放喺可行性

第一步,神經網絡預測優化問題嘅解決方案。神經網絡係模仿人腦神經元嘅深度學習模型,非常擅長識別數據模式。

接住,FSNet會用傳統求解器做可行性尋找步驟,不斷修正初步預測,確保方案無違反任何限制。

由於可行性尋找基於數學模型,佢可以保證方案實際可用。

Nguyen強調:「呢一步非常重要,確保FSNet喺實際應用中有嚴謹嘅保證。」

FSNet設計能同時處理等式同不等式兩種主要限制,使用時更方便,唔使特別調整神經網絡或分開處理限制類型。

Donti話:「用戶可以隨時插入唔同嘅優化求解器,操作非常簡單。」

研究團隊透過唔同挑戰性問題,包括電網優化,將FSNet同傳統求解器及純機器學習比較。結果顯示FSNet解題時間快好多,而且完全遵守限制條件。

FSNet甚至喺部分最棘手嘅問題中搵到更好解決方案。

Donti補充:「呢點令我哋驚訝,但合理。神經網絡能自我發現傳統求解器未能利用嘅數據結構。」

未來,團隊希望FSNet更節省記憶體,整合更高效嘅優化算法,並擴展去處理更貼近現實嘅問題。

科羅拉多大學博爾德分校副教授Kyri Baker(無參與此研究)指出:「對於像電網呢啲物理系統,找到可行解比接近最佳更重要。呢項工作為確保深度學習模型能產生符合限制嘅預測,並明確執行限制,邁出重要一步。」

評論與啟發

MIT呢個FSNet系統,成功融合傳統數學求解器與深度學習嘅優點,成為解決複雜約束優化問題嘅新利器。喺香港同其他都市化地區,隨著可再生能源滲透率提升,電網管理日益複雜,這種技術有助提升電力調度效率,減低停電風險。

更有趣係,FSNet不僅限於電力行業,未來能應用喺金融投資、製造規劃等多範疇,為多行業帶來突破。這種跨學科融合嘅思維,正正係人工智能應用發展嘅關鍵。

不過,FSNet目前仍有記憶體消耗大及算法優化空間,如何在確保可行性同速度之間取得最佳平衡,仍是挑戰。此外,香港電網環境特殊,有無可能針對本地實際情況進行定制化優化,值得本地科研界關注。

總括而言,FSNet展示咗機器學習與傳統優化結合嘅威力,亦提醒我哋,科技進步唔應只追求速度,更要兼顧實際可用性與安全性。未來如何將此類技術落地,推動智慧城市發展,將成為新一輪科技探索嘅焦點。

以上文章由特價GPT API KEY所翻譯及撰寫。而圖片則由FLUX根據內容自動生成。

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