190 lines
12 KiB
Markdown
190 lines
12 KiB
Markdown
# LinkedIn Algorithm Signals Reference (2026)
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**Single source of truth** for what the 2026 LinkedIn feed-ranking system rewards.
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Every other file in this plugin cites this one — do not restate magnitudes elsewhere,
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link here instead.
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## How to read this file
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The 2026 feed is ranked by an **LLM-based relevance system** (live in 2026; LinkedIn has
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**no publicly verifiable production name or go-live date** — see the model note below).
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Almost every "coefficient" circulating in the creator community is **third-party,
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observational, and moves year-to-year.** So this reference encodes **ordering + the two
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officially-named signals + directional magnitudes with a source and a confidence per
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claim** — never hard coefficients to optimize against.
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- **Confidence: high** = officially confirmed by LinkedIn, or convergent across multiple
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large-N studies.
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- **Confidence: medium** = single credible large-N source, or convergent direction with a
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contested magnitude.
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- **Confidence: low / directional** = practitioner heuristic, no primary source. Treat as
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a hypothesis to test on your own account, not a fact.
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**Rule of thumb: trust the *ordering*, test the *number*.**
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## Officially-named ranking signals (the only two LinkedIn confirms by name)
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| Signal | Direction | Source | Confidence |
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|--------|-----------|--------|------------|
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| Dwell time | Time spent on a post is a ranking input (active vs passive tasks; long-dwell modeled). No public weight. | LinkedIn Eng — "Leveraging Dwell Time" (2024) | high |
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| Topic / interest relevance | Content matched to a viewer's interests is distributed — *including beyond your network* for strong content. | Tim Jurka, Head of Feed AI (2025-08-11) | high |
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Everything below this line is direction + sourced estimate, not officially-weighted.
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## Engagement order (not coefficients)
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The defensible spine is the **order**, not the multiplier:
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> **saves > shares > quality comments > reactions/likes**
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| Signal | Direction / estimate | Source | Confidence |
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|--------|----------------------|--------|------------|
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| Saves | Top engagement signal; also a follow-graph signal (saving a post raises the author's next-post feed odds). ≈ 5x a like / ≈ 2x a comment in single-vendor data. | AuthoredUp, Vertebrae, van der Blom (1.8M) | medium |
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| Shares (feed + DM) | Strong distribution signal; public endorsement. | van der Blom (1.8M) | medium |
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| Quality comments (15+ words) | Substantive comments outweigh short ones; **comment ≈ 2x a like** (quality-scored, single vendor). The popular "comment = many-x a like" claim is **unverified folklore** — dropped. | AuthoredUp (NLP-quality-scored) | medium |
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| Reactions / likes | Baseline engagement unit (≈ 1x). | van der Blom (1.8M) | medium |
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> **Note on the old "comment = 15x" / "= 5x" framing:** there is no primary source for it.
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> The "5x" was the **saves** figure mis-assigned to comments. Encode the order above; do
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> not quote a comment multiplier.
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## Content format
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| Format | Direction / estimate | Source | Confidence |
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|--------|----------------------|--------|------------|
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| Documents / carousels | **Top organic format (~7%, Socialinsider, company-page per-impression).** "Carousel" = PDF document post (LinkedIn removed native carousels Dec 2023). The 7% / 21.8% / 49.5% spread across studies is a **denominator artifact**, not disagreement about the winner. | Socialinsider (1.3M), Buffer (2M), Metricool (673K) | high (rank) / medium (number) |
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| Native video | #2 format and **declining**; add captions (most watch muted). No hard aspect-ratio gate — 4:5 / 1:1 preferred, captions are the enforceable spec. | Socialinsider; van der Blom | medium |
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| Text-only | Most resilient format; generates the best comment quality. | Buffer, van der Blom | medium |
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| Multi-image | Strong, slightly below documents. | Socialinsider | medium |
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| Polls | Declining effectiveness; audience research only. | van der Blom | low / directional |
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| Link posts (link in body) | Underperform — see external links below. | Ordinal (900K) | medium |
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> The personal-profile **per-post baseline** (~2.0–2.6%) is a *different denominator* from
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> a format benchmark — never present an account baseline as a carousel rate.
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## External links (in post body)
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| Claim | Statement | Source | Confidence |
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|-------|-----------|--------|------------|
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| Reach effect | **Correlational reach reduction (~38% in 2026; contested band ~19–60% across studies).** It is a moving number, not a flat tax. | Ordinal (900K, p<0.001); van der Blom; DigitalApplied | medium |
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| Intent | **LinkedIn denies an *intentional* penalty** (Sr. Director Product, Aug 2025): no penalty "if the post leads with value" — the effect is engagement-driven. | Matt Navarra (relaying LinkedIn) | medium |
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| First comment | **Neither a magic fix nor a confirmed penalty** — contested. Lead with standalone value; native formats are the durable answer. | Ordinal; practitioner blogs (no large-N) | low |
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> **Design rule:** value-first matters more than link location. Soften any enforcing hook
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> from a hard "−X% penalty" mechanic to "body links correlate with lower reach — prefer a
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> first comment, but lead with value either way."
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## Early-engagement window + evergreen resurfacing
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| Claim | Statement | Source | Confidence |
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|-------|-----------|--------|------------|
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| Golden window | **60–90 min** (90 is the 2026 consensus); the **first 15–30 min** is the highest-leverage sub-window (~70% of reach decided there). | Buffer; Expandi; van der Blom | high |
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| First-hour velocity | Strong early engagement unlocks broader distribution. Directional, not a fixed threshold. | van der Blom | medium |
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| Evergreen resurfacing | The relevance model **can resurface strong-save / high-dwell posts days-to-weeks later** on viewer intent (posts now live 2–3 weeks vs days). **No** confirmed fixed "24–72h reinjection" rule — it is intent-driven and irregular. | AuthoredUp | medium (direction) / low (timing) |
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## Profile / topic alignment
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| Claim | Statement | Source | Confidence |
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|-------|-----------|--------|------------|
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| Topic alignment is a ranking input | Real and officially confirmed (qualitatively): topic/interest relevance drives distribution, including beyond your network. | Tim Jurka (2025-08-11) | high |
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| Off-topic reach reduction magnitude | **No primary source** states a discrete off-topic reach-reduction figure. Treat profile/topic alignment as a real input; **do not quote a percentage.** | — | n/a (figure removed) |
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## AI-content down-rank (officially confirmed — justifies the de-AI gate)
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| Claim | Statement | Source | Confidence |
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|-------|-----------|--------|------------|
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| AI-slop suppression | LinkedIn confirmed an **active program** suppressing (1) generic AI-written posts/comments, (2) automation tools, (3) attention-bait video. ML models distinguish "original thinking" from "posts lacking substance"; flagged posts are **reach-suppressed (reportedly to first-degree), not deleted.** | VP & Exec Editor Laura Lorenzetti (2026-05-19) | high |
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| Correlational engagement gap | Likely-AI posts saw ~45% less engagement (correlational). | Originality.ai (8,795 posts) | medium |
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| Engagement-pod crackdown | Auto-comments demoted out of "Most Relevant", scoped to own network; repeat offenders restricted. | VP Product Gyanda Sachdeva (2026-02-16) | high |
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> **Enforce what LinkedIn *named*** — personal substance, original thinking, concrete
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> specifics, genuine voice — not an unverified SEO "tell-list."
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## Buzzwords
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Buzzword avoidance is **editorial guidance for clarity, not a measured reach mechanic.**
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No primary source ties specific words to a reach penalty. Keep the buzzword list (it
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improves writing); do not justify it as "reduces reach."
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| Claim | Source | Confidence |
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|-------|--------|------------|
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| Specific phrasing reads better than corporate generic | Inc. (editorial) | low / directional |
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| A semantic ranker *may* indirectly favor specific over generic phrasing | inferred | low (not confirmed) |
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## The deployed ranking model — what we can and cannot say
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> **An LLM-based relevance-ranking system is live on LinkedIn in 2026.**
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> **No public name. No deployment date.**
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| Claim | Statement | Source | Confidence |
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|-------|-----------|--------|------------|
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| A live LLM relevance system exists | Confirmed in direction by LinkedIn's 2026 communications. | LinkedIn comms (2026) | high |
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| Production name | **Not publishable as fact.** The most-cited arXiv paper (2501.16450) is a Jan-**2025** *pre-production research* model (V1.0, 150B params, offline parity only), **withdrawn 2025-08-23**. A circulating "Generative Recommender / Hristo Danchev" engineering-post citation was independently flagged as **likely fabricated** — do not propagate. | arXiv 2501.16450; Gemini provenance flag | high (on the negative claim) |
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| Deployment date | No primary source. The "early-2026" date is third-party extrapolation from the paper's Jan-**2025** date. **Do not assert a date.** | — | n/a |
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## Operational heuristics (directional — test per account)
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These are creator-community heuristics with no primary-source weights. Use as starting
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hypotheses, not targets. Confidence: **low / directional** for every row.
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### Engagement velocity (first 90 min)
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| Time | Rough target | If well below |
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|------|--------------|---------------|
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| 15 min | a few | check timing / hook |
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| 30 min | building | engage in comments |
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| 60–90 min | momentum | golden window closing |
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### Posting time windows (CET / European audience)
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| Day | Commonly-cited peak |
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|-----|---------------------|
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| Tue | 8–11 AM (often best overall) |
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| Wed | 8 AM, 12 PM |
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| Thu | 9 AM–1 PM (extended) |
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| Fri | before 3 PM |
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| Mon | 7–9 AM |
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| Weekend | weaker |
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*For global audiences: post 8–11 AM local to catch multiple zones.*
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### Quick decision rules
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| Situation | Decision |
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|-----------|----------|
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| Linking? | First comment, lead with value either way |
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| Multiple ideas? | Split into separate posts |
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| Off your usual topic? | Topic alignment is a real input — stay on-domain or accept lower reach |
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| Video or text? | Text for thought leadership, video (captioned, 4:5/1:1) for connection |
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| Carousel or text? | Documents for frameworks/guides, text for stories/opinions |
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| Comment or like first? | Comment (higher in the engagement order) |
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### Comment strategy (CEA)
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1. **Compliment** — a specific point you appreciated
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2. **Expand** — your insight or related experience
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3. **Ask** — a question to continue dialogue
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Minimum quality: 15+ words, genuine perspective. AI-generated / "Great post!" comments are
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actively suppressed (see AI-slop down-rank).
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## 2026 reach context
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Organic reach declined platform-wide in 2026 — focus on **relative performance** (your
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posts vs your own baseline), not absolute numbers. Smaller engaged audiences outperform
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large passive ones. (Direction: high confidence; exact YoY %: directional, varies by
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source.)
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---
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*Last updated: 2026-05. Maintained as the single canonical algorithm statement; cite, do
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not restate.*
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*Sources (per-claim quality/confidence noted inline): arXiv 2501.16450 (pre-production
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research paper, withdrawn 2025-08-23); LinkedIn Engineering — "Leveraging Dwell Time" (2024); Tim Jurka, Head of Feed
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AI (2025-08-11); Laura Lorenzetti, VP & Exec Editor (2026-05-19); Gyanda Sachdeva, VP
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Product (2026-02-16); Matt Navarra relaying LinkedIn Sr. Director Product (Aug 2025);
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Ordinal link-penalty study (900K, p<0.001); Socialinsider (1.3M); Buffer (2M+); Metricool
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(673K); AuthoredUp (621K, NLP-quality-scored); van der Blom Algorithm Insights 2025 (1.8M);
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Originality.ai (8,795 posts); Inc. (buzzword editorial). Full provenance: research brief
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`docs/remediation/research/01-linkedin-algorithm-signals.md`.*
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