{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:WXKEHDZG76H5DSM7VEBTKPK6TT","short_pith_number":"pith:WXKEHDZG","canonical_record":{"source":{"id":"1810.07882","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2018-10-18T02:46:20Z","cross_cats_sorted":[],"title_canon_sha256":"9bddf4ea81d4b370c39a1a76ff5f106a3fa6495afe6dd832851b8f6261778684","abstract_canon_sha256":"a5fc7122e048bfe7891fbb99b3cc96cd932b49e3e1c1baaead1f185bbc9dccb8"},"schema_version":"1.0"},"canonical_sha256":"b5d4438f26ff8fd1c99fa903353d5e9cee83b38fd2bad086c2990e2fc5bc3398","source":{"kind":"arxiv","id":"1810.07882","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.07882","created_at":"2026-05-18T00:02:53Z"},{"alias_kind":"arxiv_version","alias_value":"1810.07882v1","created_at":"2026-05-18T00:02:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.07882","created_at":"2026-05-18T00:02:53Z"},{"alias_kind":"pith_short_12","alias_value":"WXKEHDZG76H5","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"WXKEHDZG76H5DSM7","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"WXKEHDZG","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:WXKEHDZG76H5DSM7VEBTKPK6TT","target":"record","payload":{"canonical_record":{"source":{"id":"1810.07882","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2018-10-18T02:46:20Z","cross_cats_sorted":[],"title_canon_sha256":"9bddf4ea81d4b370c39a1a76ff5f106a3fa6495afe6dd832851b8f6261778684","abstract_canon_sha256":"a5fc7122e048bfe7891fbb99b3cc96cd932b49e3e1c1baaead1f185bbc9dccb8"},"schema_version":"1.0"},"canonical_sha256":"b5d4438f26ff8fd1c99fa903353d5e9cee83b38fd2bad086c2990e2fc5bc3398","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:02:53.927670Z","signature_b64":"kROYlrfdeGckDnoCQvryB0QeolIHhCPdJneHRVDktFJe2QuxAy8E0SILHyJnGPkXlZCiMA1b0tjAAvnXi4mrCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5d4438f26ff8fd1c99fa903353d5e9cee83b38fd2bad086c2990e2fc5bc3398","last_reissued_at":"2026-05-18T00:02:53.927007Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:02:53.927007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.07882","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":"2026-05-18T00:02:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D7JTIziI0jtO9Odo9RkkuDt+g6Rfc9w5OPSE1n+cRMhPwPOmtfASrFXl0f4JhXAE7ktB1e5NP1qRfRvX4jmTCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:34:24.120127Z"},"content_sha256":"7648028f637ccb0786dfc558f9cb4ada66c5d6dcdd72940718be1da438063a59","schema_version":"1.0","event_id":"sha256:7648028f637ccb0786dfc558f9cb4ada66c5d6dcdd72940718be1da438063a59"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:WXKEHDZG76H5DSM7VEBTKPK6TT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measuring the Effects of Scalar and Spherical Colormaps on Ensembles of DMRI Tubes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.GR","authors_text":"Alexander P. Auchus, David H. Laidlaw, Guohao Zhang, Jian Chen, Wesley Chiou","submitted_at":"2018-10-18T02:46:20Z","abstract_excerpt":"We report empirical study results on the color encoding of ensemble scalar and orientation to visualize diffusion magnetic resonance imaging (DMRI) tubes. The experiment tested six scalar colormaps for average fractional anisotropy (FA) tasks (grayscale, blackbody, diverging, isoluminant-rainbow, extended-blackbody, and coolwarm) and four three-dimensional (3D) directional encodings for tract tracing tasks (uniform gray, absolute, eigenmap, and Boy's surface embedding). We found that extended-blackbody, coolwarm, and blackbody remain the best three approaches for identifying ensemble average i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.07882","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":"2026-05-18T00:02:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WurCHoFV6UlBfl0X6GqrRFZiRJ+JYWN06Q7XfAd7wVIaaN9j6Wepc6RKy72G4ihjv0wCuMqYkEusEVxIbeVnAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:34:24.120507Z"},"content_sha256":"8d90ab3d05e641a1f82666fd915c4f9a78e76d67c4b6d3923911cf07939440ba","schema_version":"1.0","event_id":"sha256:8d90ab3d05e641a1f82666fd915c4f9a78e76d67c4b6d3923911cf07939440ba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WXKEHDZG76H5DSM7VEBTKPK6TT/bundle.json","state_url":"https://pith.science/pith/WXKEHDZG76H5DSM7VEBTKPK6TT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WXKEHDZG76H5DSM7VEBTKPK6TT/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":"2026-06-01T04:34:24Z","links":{"resolver":"https://pith.science/pith/WXKEHDZG76H5DSM7VEBTKPK6TT","bundle":"https://pith.science/pith/WXKEHDZG76H5DSM7VEBTKPK6TT/bundle.json","state":"https://pith.science/pith/WXKEHDZG76H5DSM7VEBTKPK6TT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WXKEHDZG76H5DSM7VEBTKPK6TT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:WXKEHDZG76H5DSM7VEBTKPK6TT","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":"a5fc7122e048bfe7891fbb99b3cc96cd932b49e3e1c1baaead1f185bbc9dccb8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2018-10-18T02:46:20Z","title_canon_sha256":"9bddf4ea81d4b370c39a1a76ff5f106a3fa6495afe6dd832851b8f6261778684"},"schema_version":"1.0","source":{"id":"1810.07882","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.07882","created_at":"2026-05-18T00:02:53Z"},{"alias_kind":"arxiv_version","alias_value":"1810.07882v1","created_at":"2026-05-18T00:02:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.07882","created_at":"2026-05-18T00:02:53Z"},{"alias_kind":"pith_short_12","alias_value":"WXKEHDZG76H5","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"WXKEHDZG76H5DSM7","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"WXKEHDZG","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:8d90ab3d05e641a1f82666fd915c4f9a78e76d67c4b6d3923911cf07939440ba","target":"graph","created_at":"2026-05-18T00:02:53Z","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":"We report empirical study results on the color encoding of ensemble scalar and orientation to visualize diffusion magnetic resonance imaging (DMRI) tubes. The experiment tested six scalar colormaps for average fractional anisotropy (FA) tasks (grayscale, blackbody, diverging, isoluminant-rainbow, extended-blackbody, and coolwarm) and four three-dimensional (3D) directional encodings for tract tracing tasks (uniform gray, absolute, eigenmap, and Boy's surface embedding). We found that extended-blackbody, coolwarm, and blackbody remain the best three approaches for identifying ensemble average i","authors_text":"Alexander P. Auchus, David H. Laidlaw, Guohao Zhang, Jian Chen, Wesley Chiou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2018-10-18T02:46:20Z","title":"Measuring the Effects of Scalar and Spherical Colormaps on Ensembles of DMRI Tubes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.07882","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":"sha256:7648028f637ccb0786dfc558f9cb4ada66c5d6dcdd72940718be1da438063a59","target":"record","created_at":"2026-05-18T00:02:53Z","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":"a5fc7122e048bfe7891fbb99b3cc96cd932b49e3e1c1baaead1f185bbc9dccb8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2018-10-18T02:46:20Z","title_canon_sha256":"9bddf4ea81d4b370c39a1a76ff5f106a3fa6495afe6dd832851b8f6261778684"},"schema_version":"1.0","source":{"id":"1810.07882","kind":"arxiv","version":1}},"canonical_sha256":"b5d4438f26ff8fd1c99fa903353d5e9cee83b38fd2bad086c2990e2fc5bc3398","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5d4438f26ff8fd1c99fa903353d5e9cee83b38fd2bad086c2990e2fc5bc3398","first_computed_at":"2026-05-18T00:02:53.927007Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:02:53.927007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kROYlrfdeGckDnoCQvryB0QeolIHhCPdJneHRVDktFJe2QuxAy8E0SILHyJnGPkXlZCiMA1b0tjAAvnXi4mrCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:02:53.927670Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.07882","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7648028f637ccb0786dfc558f9cb4ada66c5d6dcdd72940718be1da438063a59","sha256:8d90ab3d05e641a1f82666fd915c4f9a78e76d67c4b6d3923911cf07939440ba"],"state_sha256":"5ac94d1956c7d34ba9e36c7f82da26d785ba274e34b0a9162b6786be8b52bdb9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yw3Af/fSckM7huL4R8NTzkwcpux8z5EoOZXXPe4oDQUv2vTnMp9dCp9o6LUeFFbaaqUcEZMP1HlCOV7R31C1DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:34:24.122835Z","bundle_sha256":"8e0ffe325cef2bc40e02ea00103c6c23b231a84cf61174f1fe846e7f721bce7a"}}