What Is Time Series Cross-Validation? Why Can’t You Randomly Shuffle Training and Test Sets for Cryptocurrency Forecasting?
In cryptocurrency quantitative trading, machine learning models often need to be trained on historical data to predict future price movements. But if all the data is randomly shuffled and then split into training and test sets, as in a typical classification task, the chronological order may be disrupted, making the model’s evaluation results overly optimistic.
First, what is time series cross-validation?
It is a method of organizing training and validation in chronologic

Amateras,
$BTC How many times have I seen this price?
Glassnode data shows that around 4 million $BTC held by long-term holders have a cost basis between $85,000 and $118,000. Most bought in at the 2025 highs, and more than half of long-term holders’ coins are still underwater.
Short-term holders’ cost basis is lower, at $77,000 and $64,000.
Historically, a breakout would require holding above $85K for several consecutive days. Otherwise, it’s probably best to keep your head down and stay humble~

10/29 Gold’s first trade: gained 14.98 points, 29,960 oil
New partner started with 100,000 oil and is now at 395,000 oil!

How Do Fees Change the Break-Even Win Rate? Why Can Frequent Trading Erode Profits?
In cryptocurrency trading, some strategies perform well in backtests, but traders find that their profits shrink significantly after trading live. The reason may not be poor market predictions, but trading costs such as fees, bid-ask spreads, and slippage. The more trades you make, the more these costs can affect your final returns.
First, how do fees affect profits?
Suppose the profit target for each trade is 100 USDT, with a planned loss of 100 USDT. If the total cost of each round-trip trade is 10 USDT, the

This morning's ETH outlook
Trade:
Short near 2320-2340 on a bounce
First target: 2300-2280
Second target: 2260-2220
Set a stop-loss
ETH's plunge this time was relentless, breaking below key levels at lightning speed and fully unleashing bearish momentum. But the indicators are already completely pinned to the floor, so chasing shorts now could easily get you burned by a sharp retaliatory rebound. The strategy is to firmly avoid catching a falling knife: wait for a rebound to be rejected at resistance, then short, targeting a new low. ETH is falling hard, and the overall direction is down. Wait

$WLD Currently at 0.4162, down 5.54% over 24H (range: 0.4128–0.4538). The 1H trend is weak, with an RSI of 39; the 4H trend is weak, with an RSI of 33. If it breaks above 0.4538 decisively, watch for further upside. If it falls below support at 0.4128, the short-term structure may weaken. Market volatility is high; for observation only.

$BTC The short position has hit TP1—the first target has been reached. Take partial profits here and let the remaining position run toward the next target.

Big A’s ancestral precepts, remember them

261029 Bitcoin follows the weekly chart; BTC/ETH both follow the 4/6-hour charts. Use stop-losses for short-term trades! BTC resistance levels: 82807/84271/85410; BTC support levels: 79879/78415/77276. ETH resistance levels: 2401/2444/2477; ETH support levels: 2317/2274/2241. Place the stop-loss slightly beyond the third price. Intraday trades should not exceed 5% of your position. Live streams are held in the afternoon and evening; follow my homepage to find me. #谷歌云增长103%股价却跌近10%

Your wallet clearly has 500 USDT, and you only want to send 100, but the page warns that you don’t have enough for the network fee. You might wonder: Don’t I still have funds here?
Having a balance doesn’t mean you have the specific coin needed to pay network fees.
For example, when sending USDT on Ethereum mainnet from a standard self-custody wallet, you’re sending USDT, but you generally need ETH to pay the Gas fee. If your wallet only has USDT and not enough ETH, you may be unable to submit the transaction.
It’s a bit like trying to take the bus with a shopping mall gift card: the card does

$SPCX Brothers stuck holding at 160, wake up! Still holding out for break-even?
That’s just handing your heads to predatory market makers! Face reality to stay alive!
SPCX plunged 8; those who chased longs above 160 must be watching their accounts bleed, right? Billions in large orders are fleeing like crazy—the major players have already pulled the ladder away!
But can your leverage withstand this? A break below 143 and it all goes up in smoke!
Jinxi teaches you 3 ways to get unstuck and protect yourself:
Cut your losses to survive: Reduce your position and leverage on rebounds. As long as yo

Seeing fees flow into a liquidity pool every day feels pretty good. But when you do the math, you realize that if you hadn’t put those coins in and had just held them, you might have more now.
This involves what people often call “impermanent loss.”
Take a common two-token automated market maker pool as an example. When the relative prices of the two tokens change, trading and arbitrage cause the proportions of assets in the pool to shift. What you withdraw may not be the same quantities of each token you put in.
Think of it as an automated exchange counter: when one type of asset gets more ex

The day before yesterday, I got my friends to play $JAGENT again. I paid for them, walked them through it step by step, and even shared so much with them. There can’t be many people as honest as me, right? I pressured quite a few people into playing, mostly real-life friends. Next time, should we try another airdrop that won’t rug and moves crazy fast?

Yang Guang bit | October 29 $ETH FOMC hawkish tilt weighs on rebound; focus on shorting rallies
【Today's Strategy】
Entry: Place short orders on a rebound into the 2335–2345 range
Stop-loss: Above 2360
Take-profit targets:
First target: 2300–2310
Second target: 2270–2280
【Key Takeaway】
WTI fell 1% to $101.74, while Brent slid toward $114, as the geopolitical premium continued to unwind. The FOMC held steady, but its overall stance was hawkish. CCTV News reported at 06:21 on October 29 that the Fed voted 10:2 to keep rates unchanged at 3.75%–4%, with Cook and Hammack favoring a rate hike; Tonghu

After trying an AI tool for a month, these were the returns. The principal was 500K. The trading frequency was simply high. The era of trading by hand is over. For manual trading, try to follow weekly market trends. You can't beat AI bots at short-term trading. Futu recently released trading data for the second and second quarters, with stock market trading volumes both up 100–150%. The AI era has lowered the barrier to developing small tools, making it harder to make money, while brokerages and exchanges are profiting more and more

After two days of volatility, will it break the 4,000 mark? Follow the quantitative system to help capture the best entry points.

Samsung earnings shock! Major players are fleeing—it's plunged hard. Is it time to buy the dip?
News drives sentiment, capital determines survival, and technicals pinpoint entries and exits!
RSI has now fallen to 15, deep in oversold territory, while capital flows are at -89—everyone is fleeing! But don't stubbornly chase shorts. Long-term storage demand remains a positive catalyst. This is short-term bearish but long-term bullish; an extreme oversold reading is bound to trigger a rebound!
Trading idea: Short if the rebound meets resistance near 176–178. $SAMSUNG $BTC $ZEC #美联储继续按兵不动 #Gate lau

$EVAA LONG SETUP — 1.60 NEXT?
$EVAA is consolidating near 1.39 after a massive rally on the 1H chart. Buyers are still defending the 1.35–1.38 zone, but momentum has slowed. A breakout above 1.45 could trigger another bullish move toward 1.60.
Entry: 1.38–1.40
SL: 1.32
TP1: 1.45
TP2: 1.52
TP3: 1.60
Extended Target: 1.70
As long as 1.35 holds, bullish continuation remains possible. A breakdown below this support would weaken the setup. High volatility makes position sizing especially important.