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What Is Overfitting? Why Can More Precise Parameters Make a Strategy More Fragile?

In cryptocurrency trading, some strategies show increasingly high historical returns and increasingly attractive backtest curves after repeated parameter tuning. However, once deployed in live markets, their performance may deteriorate rapidly. A common reason behind this is overfitting.

First, what is overfitting?

Overfitting occurs when a strategy adapts too closely to specific fluctuations and random patterns in historical data, causing it to perform well in the past but lack the ability to adapt to new ma
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**$NBIS /USDT Perp – "Heavy Breakdown – Short"**
Short Trading Plan $NBIS
Entry: 130.20
SL: 142.03
TP1: 126.00
TP2: 118.81
NBIS plunged -16.96% from its high of 160.20. MACD is deeply bearish, with a retest of the 118.81 low in sight.
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What Is Expected Value? How Can You Determine Whether a Trading Strategy Has a Positive Edge Over the Long Term?

Whether a trading strategy is worth using over the long term cannot be judged by how much it made over just a few trades. Instead, you need to consider how much profit each trade brings on average and how much loss risk it carries. That is what expected value measures.

First, what is a trading strategy’s expected value?

Expected value estimates the average long-term outcome per trade based on the win rate, average profit, and average loss. The formula is:

Expected value = win ra
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What Is Cross-Exchange Arbitrage? Why Can Price Differences Between Two Platforms Be Offset by Transfer Times and Capital Lockup Costs?

The same crypto asset may be quoted at different prices on different exchanges. Traders can try to buy on the platform with the lower price and sell on the one with the higher price to capture the spread. But this seemingly simple strategy is also affected by fees, transfer speed, and market volatility.

First, what is cross-exchange arbitrage?

Cross-exchange arbitrage involves trading on price differences for the same asset across different platforms. For e
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How Should Position Size Be Calculated? Why Is It More Reasonable to Determine the Risk Amount First, Then Decide How Much to Buy?

In cryptocurrency trading, many people are used to assessing the market first and then deciding how much to buy, while overlooking the most important step: if they are wrong, how much of a loss can they actually afford to bear? Sound position management should start with a risk budget, not potential returns.

First, determine the amount of risk you can afford to take.

Suppose your account has 1,000 USDT and you plan to limit the risk on a single trade to 1% of yo
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What is a retest confirmation? Why can a price retesting a key level after a breakout sometimes offer a better entry reference, yet also fall back into the original range?

In cryptocurrency trading, a price does not necessarily continue rising immediately after breaking through resistance. Sometimes it returns to test the area near the breakout level. If the former resistance zone turns into support, this may offer a reference for trend-following trades. But a retest is not guaranteed to succeed, and the price may still fall back into its previous trading range.

First, what is a retest confi
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$ROBO #ROBO
As long as you don’t get caught, there’s no problem.

My stubborn donkey friend keeps testing and finding new lows. For now, it’s looking good for trading. But I believe it’s going to make a nice move to the upside.

The project may still be in its early stages, but sometimes everything depends on just one good piece of news.

The price will rise again, fall again, then rise again once more and fall again. And then from some point onwards it will advance without falling. It will continue to fly as a fire-breathing dragon.
This is not investment advice!
ROBO-2.79%
$ETH Just after five in the morning, the U.S. Department of Justice’s statement came out. My alarm hadn’t gone off yet, but the group chat was already blowing up: of North Korea’s two crypto-theft operations, one involved using fake video calls to impersonate people and swindle crypto assets, stealing 400 million in eighteen months; the other was the late-October incident targeting a certain exchange. Tens of millions gone from the office, and the on-chain market gives a little shudder—that’s normal.

But don’t tie these two things together. What really pushed $ETH down 24 points to 1,945 wasn
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ETH-1.26%
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Must put knowledge into action—bought the dip #黄仁勋辞职
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BitcoinLighthouse8
Let me share my view: don’t look for 100K when prices rise or 50K when they fall—just focus on the market as it stands. Bitcoin is currently in a volatile downtrend, and it plunged again from last night into today, which certainly wasn’t what I expected. Personally, I think 67–68K is the bottom this time, and I believe it will find support and stabilize here
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Someone please tell me this is all going to be over
I hate it when I’m wrong !
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What Is a False Breakout? How Can You Distinguish a Brief Price Move Beyond a Key Level from a Breakout That Could Start a New Trend?

In crypto trading, many people rush to buy when the price breaks through a key resistance level, and rush to short when it falls below support. But sometimes the price only briefly moves beyond a key level before quickly returning to its previous range. This is known as a false breakout and is one of the risks traders can easily overlook.

First, what is a false breakout?

A false breakout occurs when the price briefly breaks through a support or resistance lev
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It’s a total sea of red across the charts today 🩸
ethereum:native
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#ETHBrieflyFallsBelow2000 📉 ETH briefly fell below $2,000—is it really time to find a new bottom?

BTC continued to weaken, and ETH also failed to hold $2,000, briefly dipping to around $1,983.

ETH has faced considerable pressure recently. 👀

💰 ETF outflows, institutional buying still needs to recover

📊 Inflationary pressures persist, and sentiment toward risk assets remains cautious

⚡ Leveraged liquidations intensify, further amplifying short-term volatility

Bulls and bears are divided again: some believe the area around $2,000 is worth watching, while others worry that funds have yet
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GateSquare
📉 ETH briefly fell below $2,000—is it really time to find a new bottom?
BTC continued to weaken, and ETH also failed to hold $2,000, briefly dipping to around $1,983.
ETH has faced considerable pressure recently. 👀
💰 ETF outflows, institutional buying still needs to recover
📊 Inflationary pressures persist, and sentiment toward risk assets remains cautious
⚡ Leveraged liquidations intensify, further amplifying short-term volatility
Bulls and bears are divided again: some believe the area around $2,000 is worth watching, while others worry that funds have yet to flow back in and the downtrend is not over.
If ETH climbs back above $2,000, would you consider the rebound to have begun, or would you need more signals to confirm?
Bring #ETH一度跌破2000美元 to Gate Square to share your position changes, market views, or trading strategies.
💬 Would you look for opportunities in stages, or wait until ETH truly stabilizes before taking action?
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Just thinking about that 68.4k level at lunchtime
At 68k, surely they'd let people finish their noodles
Then, just before 2 p.m., it broke through another level 🥲
Around 1:56 p.m.
BTC crashed below 68k, bottoming around 67.5k
Now around 68.2k, down about 7.3% over 24 hours, with a high of about 73.7k
The liquidation figures look bad too
BTC liquidations over 24 hours were about $901 million, with long positions accounting for about $870 million, or roughly 97%
ETH bottomed around 1,890 and is now back near 1,910
That whole-number level disappeared in an instant—I’ll finish my noodles before t
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new market update
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LIVE1,987
#晒出我的持仓收益
Don't listen to the clock running backward—go for whatever you want!
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Sometimes, the calmest-looking market sessions are the harbingers of the greatest storms. While US stock markets saw only modest declines on Thursday, the bond market and commodity prices reveal a far more unsettling picture.

The S&P 500, Nasdaq, and Dow Jones indices all closed the day with losses of around 0.4%. Yet, the real issue is not the extent of the decline in stocks, but rather the increasing premium investors are now demanding to hold risky assets. The rise in bond yields and a strengthening dollar provide a clear answer to this.

Thursday’s close: A quiet but deep fissure

At firs
User_any
The climb of the US Dollar Index (DXY) to a 19-month high is more than just a currency fluctuation; it is the clearest indicator of global capital seeking a "safe haven" and a repricing of risk appetite.
On November 11, 2026, the DXY rose by 0.68% to reach 102.90—its highest level since April 2025. So, what lies behind this surge, and what does it mean for the markets?
📈 Hot Inflation and a Hawkish Fed
The primary driver pushing the DXY to its peak was the US Consumer Price Index (CPI) data for October. Headline inflation rose by 0.4% month-on-month, exceeding the 0.3% forecast, while core inflation also came in above expectations at 0.3%—marking the third consecutive month of such an outcome.
This data sharply shifted expectations regarding Federal Reserve interest rate hikes. According to the CME FedWatch tool, the probability of a quarter-point hike at the December meeting has climbed to 87%, while the chance of a half-point hike stands at 15%; the scenario of rates remaining unchanged has been almost entirely priced out. Furthermore, comments from Fed Governor Christopher Waller—suggesting that a hike of only 25 basis points could pose a risk to the Fed's credibility—have reinforced this hawkish tone.
🌍 The Other Side of the Basket: Weakness in the Euro 🧐
The rise of the DXY is not driven solely by factors originating in the US. The euro, which accounts for 57.6% of the index, fell to the $1.11 level—its lowest point since May 2025—amid concerns over debt in France and diminishing expectations for interest rate hikes by the ECB. In other words, the strengthening of the dollar is also a reflection of weakness on the European side.
₿ Impact on the Crypto Market: Bitcoin Falls Below $70,000 🤔
As the DXY (US Dollar Index) surpassed the 103 level, a sharp wave of selling hit the crypto market. Bitcoin dropped to $69,000, marking its lowest level since August, while over $1.3 billion in futures positions were liquidated across the market in the last 24 hours—$677 million of which involved Bitcoin positions. Ethereum also dipped below $2,000.
The mechanism behind this relationship is straightforward: as the dollar strengthens, the opportunity cost of holding non-yielding assets (such as Bitcoin and gold) increases. With US bond yields exceeding 5%, the capital allocated to riskier assets shrinks. However, it is worth noting that this relationship is not absolute; factors such as ETF inflows, regulatory developments, or the clearing of leveraged positions can occasionally disrupt this correlation.
⚠️ Key Points to Watch
The sustainability of the rise in the DXY depends on upcoming data. The Federal Reserve meeting on December 9 and the subsequent inflation figures will determine whether this trend is lasting or merely temporary. Furthermore, the 103.07 level—the DXY’s 52-week high—stands out as a critical resistance point from a technical perspective.
In summary, the DXY reaching a 19-month high reflects a strong U.S. economy and expectations for a hawkish Federal Reserve. For crypto investors, this serves as a reminder that macroeconomic liquidity conditions remain a decisive factor.
This content is for informational purposes only and does not constitute investment advice.
$BTC $NAS100 $US500 $EURUSD $XAU
#Gate股票畅聊季 #GateStockTalkSeason
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354 people arrested overnight—the “anonymity” myth of dark web drug dealers is completely busted!
The U.S. Department of Justice’s Operation TorNado has directly taken down the dark web drug dealers’ strongholds, arresting 354 people across the U.S., Europe, Australia, and New Zealand. It’s the largest coordinated international operation since JCODE was established—brutal!
Running from May 2025 to October 2026, this was a full year and a half of sustained crackdowns—not some knee-jerk, campaign-style enforcement, but a real, long-term hunt
More than $234 million in cash and cryptocurrency seiz
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$PEPE Currently trading at 0.00000459, up 2.69% over 24H. The 1H trend is strong, with price above the EMA20 at 0.00000453 and RSI at 72 (overbought). The 4H trend is weak, with EMA20 at 0.00000475, RSI at 21 (oversold), and volume at just 0.2x. Watch: Further upside is only worth considering if price breaks above and holds the 0.00000469 resistance with increased volume. A break below the 0.00000429 support without a reclaim would signal short-term weakness. Monitor whether price can hold above 0.00000469; insufficient volume or a break below 0.00000429 would invalidate the signal. The market
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PEPE+0.97%
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