{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Y2IQ7YNP2NQYKCEEVOGXAJKN6D","short_pith_number":"pith:Y2IQ7YNP","canonical_record":{"source":{"id":"1905.10371","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-24T17:33:17Z","cross_cats_sorted":["cs.LG","stat.ML"],"title_canon_sha256":"dbabf6472af5bb9197938e22cb9d22639f59c1cbaa0720fbf180007908630913","abstract_canon_sha256":"1f25d2329f61ee0ee50d7a15ddc1bed7af3334f3722ff10099b22e3447aa2a07"},"schema_version":"1.0"},"canonical_sha256":"c6910fe1afd361850884ab8d70254df0ef777418ecfb15de0c901a66cd4e632b","source":{"kind":"arxiv","id":"1905.10371","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10371","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10371v1","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10371","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"pith_short_12","alias_value":"Y2IQ7YNP2NQY","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"Y2IQ7YNP2NQYKCEE","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"Y2IQ7YNP","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Y2IQ7YNP2NQYKCEEVOGXAJKN6D","target":"record","payload":{"canonical_record":{"source":{"id":"1905.10371","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-24T17:33:17Z","cross_cats_sorted":["cs.LG","stat.ML"],"title_canon_sha256":"dbabf6472af5bb9197938e22cb9d22639f59c1cbaa0720fbf180007908630913","abstract_canon_sha256":"1f25d2329f61ee0ee50d7a15ddc1bed7af3334f3722ff10099b22e3447aa2a07"},"schema_version":"1.0"},"canonical_sha256":"c6910fe1afd361850884ab8d70254df0ef777418ecfb15de0c901a66cd4e632b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:08.706727Z","signature_b64":"bKn+KlSloUT5R2Nxc7OjozxcD/V+4KxBB4kgBefKnPdX+wEOHrHUCf2iQDFuUtiZ4Ho6U+lw2n7SLQB5TnMaCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c6910fe1afd361850884ab8d70254df0ef777418ecfb15de0c901a66cd4e632b","last_reissued_at":"2026-05-17T23:45:08.705969Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:08.705969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.10371","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:45:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ifDxFdWqsFcmcLn1ROVTy8VICRmIhW+FbysF9FSZn2slu3MoA5mM4Xh2f69XDEY9QxJ8oT9S4Empdfr9LQ6CAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:05:30.332362Z"},"content_sha256":"0a6abf2e1ede79e83f0a5fe1259bd90885ce69c8da90980b1b81bf1b4a86aedc","schema_version":"1.0","event_id":"sha256:0a6abf2e1ede79e83f0a5fe1259bd90885ce69c8da90980b1b81bf1b4a86aedc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Y2IQ7YNP2NQYKCEEVOGXAJKN6D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Compression Objective and a Cycle Loss for Neural Image Compression","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","stat.ML"],"primary_cat":"eess.IV","authors_text":"Antti Hallapuro, Caglar Aytekin, Emre Aksu, Francesco Cricri, Jani Lainema, Miska Hannuksela","submitted_at":"2019-05-24T17:33:17Z","abstract_excerpt":"In this manuscript we propose two objective terms for neural image compression: a compression objective and a cycle loss. These terms are applied on the encoder output of an autoencoder and are used in combination with reconstruction losses. The compression objective encourages sparsity and low entropy in the activations. The cycle loss term represents the distortion between encoder outputs computed from the original image and from the reconstructed image (code-domain distortion). We train different autoencoders by using the compression objective in combination with different losses: a) MSE, b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10371","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:45:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dU612CagjexhxXaEaf5m5jFwPAFFYG2pj48Zg4TeIeisbCcLllS7wDOfJeaq1yGZdsqcknfU/UivStEAWROpDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:05:30.333013Z"},"content_sha256":"c84953b6519b33f2e554c68372f8ca526f88df73caf25d885c14a58fd1f390ed","schema_version":"1.0","event_id":"sha256:c84953b6519b33f2e554c68372f8ca526f88df73caf25d885c14a58fd1f390ed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y2IQ7YNP2NQYKCEEVOGXAJKN6D/bundle.json","state_url":"https://pith.science/pith/Y2IQ7YNP2NQYKCEEVOGXAJKN6D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y2IQ7YNP2NQYKCEEVOGXAJKN6D/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T18:05:30Z","links":{"resolver":"https://pith.science/pith/Y2IQ7YNP2NQYKCEEVOGXAJKN6D","bundle":"https://pith.science/pith/Y2IQ7YNP2NQYKCEEVOGXAJKN6D/bundle.json","state":"https://pith.science/pith/Y2IQ7YNP2NQYKCEEVOGXAJKN6D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y2IQ7YNP2NQYKCEEVOGXAJKN6D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Y2IQ7YNP2NQYKCEEVOGXAJKN6D","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1f25d2329f61ee0ee50d7a15ddc1bed7af3334f3722ff10099b22e3447aa2a07","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-24T17:33:17Z","title_canon_sha256":"dbabf6472af5bb9197938e22cb9d22639f59c1cbaa0720fbf180007908630913"},"schema_version":"1.0","source":{"id":"1905.10371","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10371","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10371v1","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10371","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"pith_short_12","alias_value":"Y2IQ7YNP2NQY","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"Y2IQ7YNP2NQYKCEE","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"Y2IQ7YNP","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:c84953b6519b33f2e554c68372f8ca526f88df73caf25d885c14a58fd1f390ed","target":"graph","created_at":"2026-05-17T23:45:08Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"In this manuscript we propose two objective terms for neural image compression: a compression objective and a cycle loss. These terms are applied on the encoder output of an autoencoder and are used in combination with reconstruction losses. The compression objective encourages sparsity and low entropy in the activations. The cycle loss term represents the distortion between encoder outputs computed from the original image and from the reconstructed image (code-domain distortion). We train different autoencoders by using the compression objective in combination with different losses: a) MSE, b","authors_text":"Antti Hallapuro, Caglar Aytekin, Emre Aksu, Francesco Cricri, Jani Lainema, Miska Hannuksela","cross_cats":["cs.LG","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-24T17:33:17Z","title":"A Compression Objective and a Cycle Loss for Neural Image Compression"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10371","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:0a6abf2e1ede79e83f0a5fe1259bd90885ce69c8da90980b1b81bf1b4a86aedc","target":"record","created_at":"2026-05-17T23:45:08Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1f25d2329f61ee0ee50d7a15ddc1bed7af3334f3722ff10099b22e3447aa2a07","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2019-05-24T17:33:17Z","title_canon_sha256":"dbabf6472af5bb9197938e22cb9d22639f59c1cbaa0720fbf180007908630913"},"schema_version":"1.0","source":{"id":"1905.10371","kind":"arxiv","version":1}},"canonical_sha256":"c6910fe1afd361850884ab8d70254df0ef777418ecfb15de0c901a66cd4e632b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6910fe1afd361850884ab8d70254df0ef777418ecfb15de0c901a66cd4e632b","first_computed_at":"2026-05-17T23:45:08.705969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:08.705969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bKn+KlSloUT5R2Nxc7OjozxcD/V+4KxBB4kgBefKnPdX+wEOHrHUCf2iQDFuUtiZ4Ho6U+lw2n7SLQB5TnMaCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:08.706727Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.10371","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a6abf2e1ede79e83f0a5fe1259bd90885ce69c8da90980b1b81bf1b4a86aedc","sha256:c84953b6519b33f2e554c68372f8ca526f88df73caf25d885c14a58fd1f390ed"],"state_sha256":"4e89e8cf3631f59f5e9b2e86db8f7991f3531b4b32ce00f0137d8716055623e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/FxAzfxwIV2uaM4L/RyUFYc16XBivMuJFJIO+ucGK5Effik1/fwzFU6Wlcb4/668aKhuieFtgX4s19Vw8lTsAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:05:30.336514Z","bundle_sha256":"11d4d91333d1d111ba9008765ced5ffb3f70f6a58f0e78022ba56df85202fbe2"}}