Search references for TRACE VECTOR-DECODER. Phrases containing TRACE VECTOR-DECODER
See searches and references containing TRACE VECTOR-DECODER!TRACE VECTOR-DECODER
A Trace Vector Decoder (TVD) is computer software that uses the trace facility of its underlying microprocessor to decode encrypted instruction opcodes
Trace_vector_decoder
Decodes a bitstream with the Viterbi algorithm
A Viterbi decoder uses the Viterbi algorithm for decoding a bitstream that has been encoded using a convolutional code or trellis code. There are other
Viterbi_decoder
unencrypted into physical memory at any given time. This is called a trace vector decoder and was originally implemented on the Atari ST platform and afterwards
Rob_Northen_copylock
Central computer component that executes instructions
determines what the CPU will do. In the decode step, performed by binary decoder circuitry known as the instruction decoder, the instruction is converted into
Central_processing_unit
Open-source CPU instruction set architecture
ARM's Scalable Vector Extension. That is, each vector in up to 32 vectors is the same length. The application specifies the total vector width it requires
RISC-V
Hardware cache of a central processing unit
storing traces of instructions that have already been fetched and decoded. A trace cache stores instructions either after they have been decoded, or as
CPU_cache
Instrument for displaying time-varying signals
deflects the trace downward. The vertical position control moves the whole displayed trace up and down. It is used to set the no-input trace exactly on
Oscilloscope
Technique for the generative modeling of a continuous probability distribution
image decoder is trained to convert CLIP image encodings back to images. During inference, a text is converted by the CLIP text encoder to a vector, then
Diffusion_model
Microcode in x86 Intel processors
2018. Core architecture is equipped with four x86 decoders, 3 simple decoders and 1 complex decoder … to translate the 1 to 15 byte variable length x86
Intel_microcode
Kind of error correction code
original codeword was decodable and the e = ( e 1 , … , e n ) {\displaystyle e=(e_{1},\dots ,e_{n})} was the binary error vector, then σ ( x ) = ∏ i =
Binary_Goppa_code
Elementwise product of two matrices
of x. In particular, using vectors of ones, this shows that the sum of all elements in the Hadamard product is the trace of ABT where superscript T denotes
Hadamard_product_(matrices)
Use of multiple antennas in radio
first full symbol vector found is known as the Babai point. The radius constraint d 2 {\displaystyle d^{2}} of the sphere decoder can then be updated
MIMO
Parallel computing platform and programming model
components: CUTLASS 1.0 – custom linear algebra algorithms, NVIDIA Video Decoder was deprecated in CUDA 9.2; it is now available in NVIDIA Video Codec SDK
CUDA
Diagnostic, debugging and instructional userspace utility for Linux
session IDs appearing in the trace into strace's PID namespace (--pidns-translation option; since strace 5.9). Decoding SELinux context information associated
Strace
Family of RISC-based computer architectures
32-bit bus accessible memory. The first processor with a Thumb instruction decoder was the ARM7TDMI. All processors supporting 32-bit instruction sets, starting
Arm_architecture_family
Mathematical model of memory
time providing the location with the appropriate address decoder. A neuron as an address decoder would select a location based on similarity of the location's
Sparse_distributed_memory
Technique altering AI content for easier detection
al., ICCV 2023) fine-tunes the VAE decoder of a latent diffusion model such as Stable Diffusion so that every decoded image hides a fixed binary signature
AI_content_watermarking
Circuit that performs subtraction
Consequently, a simplified half-subtract circuit, advantageously avoiding crossed traces in particular as well as a negate gate is: X ── XOR ─┬─────── |X-Y|, is
Subtractor
Family of instruction set architectures
approach with the Execution Trace Cache feature in their NetBurst microarchitecture (for Pentium 4 processors) and later in the Decoded Stream Buffer (for Core-branded
X86
Chinese artificial intelligence company
dense decoder-only transformers. Later models incorporated the multi-head latent attention (MLA), Mixture of Experts (MoE), and KV caching. A decoder-only
DeepSeek
Recurrent neural network architecture
Bengio, Yoshua (2014). "Learning Phrase Representations using RNN Encoder-Decoder for Statistical Machine Translation". arXiv:1406.1078 [cs.CL]. Srivastava
Long_short-term_memory
Attention algorithm for efficient large language model serving
{A} _{ij}^{\top }} where A i j {\displaystyle \mathbf {A} _{ij}} is the vector of attention scores for the j {\displaystyle j} -th KV block. In the formulation
PagedAttention
Method by which information is represented in the brain
computation Neural correlate Neural decoding Neural oscillation Receptive field Sparse distributed memory Vector quantization Representational drift Brown
Neural_coding
macro-op fusion and enhanced micro-op fusion with a wider front end and decoder, larger out-of-order core and renamed register, support loop stream detector
List of Intel CPU microarchitectures
List_of_Intel_CPU_microarchitectures
Multicore, without SMT, 8 wide decoder, big core. Intel Cougar Cove 2025 Intel Xeon Phi 7120x 2013 7-stage integer, 6-stage vector Multi-core, multithreading
Comparison of CPU microarchitectures
Comparison_of_CPU_microarchitectures
Structuring text as input to generative artificial intelligence
"auto-CoT", a library of questions are converted to vectors by a model such as BERT. The question vectors are clustered. Questions close to the centroid of
Prompt_engineering
Serial interface for testing integrated circuits
and Nexus as well as Intel's BTS (Branch Trace Storage), LBR (Last Branch Record), and IPT (Intel Processor Trace) implementations. There are a number of
JTAG
Specialized electronic circuit that accelerates graphics
graphics chips to accelerate video decoding on hardware GPU with DXVA. SoC UVD (Unified Video Decoder) – the video decoding bit-stream technology from ATI
Graphics_processing_unit
Instruction for x86 microprocessors
512-bit maximum vector widths as supported. With AVX10.2, Intel dropped the vector width distinction entirely, instead mandating 512-bit vector support. As
CPUID
GPU microarchitecture by AMD
compensates for lower core clock speeds used in low-power situations. Most rich vector shader instructions for interpolation and comparison are also double rate
RDNA_3
Programming paradigm in which many processes are executed simultaneously
linear arrays of numbers or vectors. An example vector operation is A = B × C, where A, B, and C are each 64-element vectors of 64-bit floating-point numbers
Parallel_computing
Counterfeit detection
the scanned CDP are tested. and show that a classifier based on support vector domain description outperforms other classification methods. CDPs are used
Copy_detection_pattern
Algorithm that estimates unknowns from a series of measurements over time
cases where the dimension of the observation vector y is bigger than the dimension of the state space vector x, the information filter can avoid the inversion
Kalman_filter
Object-oriented programming language
ActionScript was initially designed for controlling simple two-dimensional vector animations made in Adobe Flash (formerly Macromedia Flash). Initially focused
ActionScript
Widely used NTSC television test pattern
demodulating the 3.58 MHz color subcarrier portion of the signal. The vectors for the -I and +Q blocks should fall exactly on the I and Q axes on the
SMPTE_color_bars
CPU microarchitecture by Intel
Intel SGX (Software Guard Extensions). Xeon variants also support Advanced Vector Extensions 3.2 (AVX-512F). Skylake-based laptops were predicted to use wireless
Skylake_(microarchitecture)
Discontinued multimedia platform used to add animation and interactivity to websites
mobile games, and embedded web browser video players. Flash displays text, vector graphics, and raster graphics to provide animations, video games, and applications
Adobe_Flash
networks (RNN). An encoder RNN and a decoder RNN. Encoder RNN uses encoding vectors on the source sentence and the decoder RNN generates the target sentence
History of machine translation
History_of_machine_translation
American actor
Causes" Grey's Anatomy Jim Walker The Good Guys Mike Smith Leverage Mark Vector Episode: "The Morning After Job" Nikita Senator Kerrigan 2011 Law & Order:
Spencer_Garrett
Firsthand aeronautical condition report
sky cover /TA ambient temperature; important for icing reports /WV wind vector referenced in terms of true north (ICAO), or magnetic north (in the United
Pilot_report
Metadata standard in digital images
relationship between the image sensor's XYZ coordinate system and the gravity vector (i.e., which way is down in this image). It could also establish relative
Exif
Raster and vector graphics editor
PaintShop Pro (PSP) is a raster and vector graphics editor for Microsoft Windows. It was originally published by Jasc Software. In October 2004, Corel
PaintShop_Pro
Protection of computer systems from information disclosure, theft or damage
multi-vector, polymorphic cyber threats combine several types of attacks and change form to avoid cybersecurity controls as they spread. Multi-vector polymorphic
Computer_security
Microprocessor Benchmark Consortium, is a non-profit corporation Press release for TM3282 EEMBC benchmark scores BDTi Video encoder and decoder benchmarks
TriMedia_(media_processor)
where it is physically needed on a board, instead of running long signal traces to a full-size logic chip that has many of the same gate. All chips in the
List of 7400-series integrated circuits
List_of_7400-series_integrated_circuits
Artificial intelligence model paradigm
developers sometimes adapt only the last neural layer or only the bias vectors to save time and space. For particularly niche applications, specific data
Foundation_model
Ground-based monopulse single object tracking radar
the decoder module provides a pulse output only if the correct spacing exists between pulse pairs received. The shaped-pulse output of the decoder is directed
AN/FPS-16 Instrumentation Radar
AN/FPS-16_Instrumentation_Radar
Intel microprocessor series released in 2023
claims that Crestmont achieves a 3% IPC increase due to the addition of Vector Neural Network Instructions (VNNI) instructions support for AI workloads
Meteor_Lake
Computer programming paradigm
number of vector components and their data format. This is done for clarity. You can see however, this method reduces the number of decoded instructions
Stream_processing
Former multimedia software
graphics and vector graphics since its earliest version. It supports the following different multimedia formats, which it can natively decode and play back
Adobe_Flash_Player
Computer hardware technology that uses quantum mechanics
inhabits a four-dimensional vector space spanned by the basis vectors |00⟩, |01⟩, |10⟩, and |11⟩. In general, the vector space for an n-qubit system is
Quantum_computing
Method of sharing digital TV subscriptions
own subscription card. The theory of card sharing as a potential attack vector on pay TV encryption was provided in the book European Scrambling Systems
Card_sharing
Aspect of quantum information science
{u}}_{A}} represents a 3D unit vector and σ → n A {\textstyle {\vec {\sigma }}_{n_{A}}} is the Pauli spin matrix vector at site n A {\textstyle n_{A}}
Quantum_energy_teleportation
the late Middle Ages to the present. Scholarship highlights recurring vectors: Renaissance and early modern image–text programmes (emblems, alchemical
Western_esotericism_and_arts
8-bit microprocessor
simpler to write interfacing code. Another mini-like feature was its use of vectored interrupts, which allowed devices to call the correct interrupt handler
Signetics_2650
Semi-annual astronomical event where the Sun is directly above the Earth's equator
Falguni; Aluru, Nikhil; MacPherson, Bradley; Mikovitz, J. Colleen (2025). "A vector-based universal formula for the solar geometry of single-axis trackers:
Equinox
Structured system of communication
(1973) Shanahan, D. (2011). Language, feeling, and the brain: The evocative vector. Transaction Publishers. Ulbaek (1998) Tomasello (2008) Fitch 2010, pp. 466–507
Language
8-bit microprocessor
i = 0, for vectored method, the interrupting device has the opportunity to place the op-code for one byte. If i = 2, for indirect vector method, the
Zilog_Z80
floating point performance through multiple FPU and SIMD vector processors in each core. The SIMD vector processor (VMX128) was modified for the Xbox to include
Xbox 360 technical specifications
Xbox_360_technical_specifications
Elimination of indigenous inhabitants
said that the population decline cannot be explained by disease only. The vectors of death raised by displacement, warfare, slavery, and famine played an
Genocide of indigenous peoples
Genocide_of_indigenous_peoples
1983 aircraft shotdown over the Sea of Japan
747. Significant command and control problems were experienced trying to vector the fast military jets onto the 747 before they ran out of fuel. In addition
Korean_Air_Lines_Flight_007
Open-source machine learning system for end-to-end data science lifecycle
colSums(A)/N; C = (t(A) %*% A)/(N-1) - (N/(N-1))*t(mu) %*% mu; # compute eigen vectors and values [evalues, evectors] = eigen(C); spark-submit SystemDS.jar -f
Apache_SystemDS
American drama TV series episodes list
explains Reiden's success is based on the "mother cell", their special vector molecule, which is in all of their products, including human medication
List_of_Zoo_episodes
Punctuation mark
operator. This is known as Dirac notation or bra–ket notation, to note vectors from the dual spaces of the Bra ⟨A| and the Ket |B⟩. But there are other
Bracket
Air Vectors.net. Retrieved 23 June 2025. Goebel, Greg (1 June 2024). "Boeing B-52 Stratofortress - [3.1] B-52 IN THE 1970S & 1980S". Air Vectors.net.
List of military electronics of the United States: A–G
List_of_military_electronics_of_the_United_States:_A–G
Quantum states of two qubits
entanglement. The Bell's states are a form of entangled and normalized basis vectors. This normalization implies that the overall probability of the particles
Bell_state
Walleye, & HOBOS". Air Vectors.net. Retrieved 19 October 2025. Goebel, Greg (1 November 2023). "[1.0] F-15 Origins & Variants". Air Vectors.net. Retrieved 19
List of military electronics of the United States: M–Z
List_of_military_electronics_of_the_United_States:_M–Z
Statistical procedure of testing by group
The input vector, x = ( x 1 , x 2 , … , x n ) {\displaystyle \mathbf {x} =(x_{1},x_{2},\dots ,x_{n})} , is defined to be a binary vector of length n
Group_testing
Electronic circuits that utilize digital signals
The functional verification data are usually called test vectors. The functional test vectors may be preserved and used in the factory to test whether
Digital_electronics
Virus that causes COVID-19
3389/fmicb.2020.580137. PMC 7554366. PMID 33101254. "Why it's so tricky to trace the origin of COVID-19". Science. National Geographic. 10 September 2021
SARS-CoV-2
Discerning a password via screen smudges
sectors. A feature vector with all the local features is formed after filtering each sector, and the Euclidean distance of the vectors of two fingerprint
Smudge_attack
PMID 40797096. Wang, Z.K.; Miguez-Salas, O. (2025). "Quantitative decoding of Ediacaran locomotory trace fossil morphologies: Evidence for the emergence of slender
2025_in_paleontology
List of x86 microprocessor instructions
while others are specific to a narrow range of CPUs. CLMUL RDRAND Advanced Vector Extensions 2 AVX-512 x86 Bit manipulation instruction set CPUID List of
List_of_x86_instructions
List of Android operating system versions
the original on January 9, 2022. Retrieved April 22, 2022. "Add new LC3 decoder (I275ea8ba)". AOSP Gerrit. Retrieved April 22, 2022. Gidra, Lokesh (May
Android_version_history
Major naval battle in the Pacific Theater of World War II
radar heading in their direction, turned southeast into the wind, and vectored 11 CAP Wildcats, led by Lieutenant Commanders Paul H. Ramsey and James
Battle_of_the_Coral_Sea
Object that reflects an image
direction vector u → {\displaystyle {\vec {u}}} towards the incident beams's source, the normal vector n → {\displaystyle {\vec {n}}} , and direction vector v
Mirror
Icelandic biopharmaceutical company
that the ability "to trace the genealogy of an entire nation...could become one of the treasures of modern medicine." In 1997, deCODE formed a partnership
DeCODE_genetics
to live in since they see her as a threat for being the Book of Law's decoder. He explains that the Amakusa Church wants to follow their former priestess
List of A Certain Magical Index chapters
List_of_A_Certain_Magical_Index_chapters
Block cipher
KeeLoq cipher to produce a 32-bit "hopping code". A 32-bit initialization vector is linearly added (XORed) to the 32 least significant bits of the key prior
KeeLoq
Video game genre
and programmed with the help of her husband Ken, the game featured static vector graphics atop a simple command line interface, building on the text adventure
Adventure_game
Partitioning a digital image into segments
through the layers. It is used to capture the context in the image. The decoder structure utilizes transposed convolution layers for upsampling so that
Image_segmentation
reveals that even if Yoshimitsu has Achilles, it does him no good. The decoder for the Platinum Capsule has been hidden as the prize for the Artemis Tournament
List of Danball Senki episodes
List_of_Danball_Senki_episodes
GNU replacement for the Bourne shell
to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid
Bash_(Unix_shell)
Species of hyena
hyena saliva samples showed that the species is unlikely to be a rabies vector, thus indicating that the species catches the disease from other animals
Spotted_hyena
2014 American science fiction horror television series
500 years old, as indicated by his bright silver eyes. He had created the Vector virus as a means to activate dormant genes within Julia to give her a similar
Helix_(TV_series)
Rocket engine in SpaceX Falcon launch vehicles
the need for a separate hydraulic drive system and means that thrust vectoring control failure by running out of hydraulic fluid is not possible. The
SpaceX_Merlin
Authentication networking protocol
2009-04-17. Radius Types An Analysis of the RADIUS Authentication Protocol Decoding a Sniffer-trace of RADIUS Transaction Using Wireshark to debug RADIUS
RADIUS
format that can contain different types of multimedia content, including vector and bitmap graphics, audio, video, forms, intra- and inter-document hypertext
Comparison_of_web_browsers
Microprocessor designed by Fujitsu
eight; and an extra pipeline stage was inserted before the instruction decoder. This stage accommodated the greater number of integer and floating-point
SPARC64_V
Epidemiological intervention to prevent disease transmission
suspect. It can also be used to limit exposure, as well as eliminate a vector. New developments for quarantine include new concepts in quarantine vehicles
Quarantine
Microprocessor with more than one processing unit
multi-core systems may implement architectures such as VLIW, superscalar, vector, or multithreading. Multi-core processors are widely used across many application
Multi-core_processor
RISC instruction set architecture
management, high-performance floating-point arithmetic, unified scalar and vector processing, and the use of a "software definition" for the architecture
DEC_PRISM
Connection between brain and computer
rates of 3% (a marked improvement from prior efforts) utilizing an encoder-decoder neural network, which translated ECoG data into one of fifty sentences
Brain–computer_interface
Media needing electronic means for access
database systems have been introduced, including relational, object-oriented, vector and NoSQL databases. Interactivity refers to the ability of electronic media
Electronic_media
Genus of flukes
Indoplanorbis exustus (Gastropoda: Planorbidae) in Asia". Parasites & Vectors. 3 57. doi:10.1186/1756-3305-3-57. PMC 2914737. PMID 20602771. Attwood
Schistosoma
Russian multinational cybersecurity and anti-virus provider
to evade detection by traditional security tools. DuneQuixote's attack vector included compromised software updates and supply chain vulnerabilities.
Kaspersky_Lab
Unidentified 1971 airplane hijacker
entire flight path known as Victor 23 in U.S. aviation terminology, and as "Vector 23" in most Cooper literature, from Seattle to Reno. Although numerous broken
D._B._Cooper
Quantum channel
the encoding of a single bit using the k available bits, a one-spin up vector is defined | j ⟩ {\displaystyle |j\rangle } , in which all spins are in
Amplitude_damping_channel
Class of animals with milk-producing glands
over the wing. This generates a lift force vector pointing forwards and upwards, and a drag force vector pointing rearwards and upwards. The upwards
Mammal
Microarchitecture by AMD
predictor for conditionals Indirect predictor Support for Intel's Advanced Vector Extensions (AVX) instruction set, which supports 256-Bit floating point
Bulldozer_(microarchitecture)
TRACE VECTOR-DECODER
TRACE VECTOR-DECODER
Female
English
Feminine variant spelling of English unisex Tracy, TRACEE means "place of Thracius."
Male
English
Short form of English unisex Tracy, TRACE means "place of Thracius."
Girl/Female
American, Arabic, Australian, British, Chinese, Christian, Danish, English, French, German, Gujarati, Indian, Irish, Jamaican, Latin, Muslim, Portuguese, Swedish
Mercy; God's Favor; Grace; Grace of God; Kindness; Thanks; Love; Favour; Blessing; Charm; Good will
Boy/Male
Spanish
Victor.
Girl/Female
Latin American English Irish
Grace.
Female
English
Feminine variant spelling of English unisex Tracy, TRACI means "place of Thracius."
Male
English
 Anglicized form of Scottish Gaelic Eachann, HECTOR means "brown horse." Compare with another form of Hector.
Boy/Male
American, Anglo, Australian, British, Chinese, English, French
Fighter; Brave
Female
English
Feminine variant spelling of English unisex Tracy, TRACIE means "place of Thracius."
Boy/Male
Anglo Saxon American English French
Brave.
Boy/Male
American, British, Christian, Danish, Dutch, English, Finnish, French, German, Greek, Hindu, Indian, Irish, Jamaican, Latin, Romanian, Slovenia, Spanish, Swedish, Swiss, Tamil, Ukrainian
Victorious; Conqueror; Winner; Champion; One who Conquers; Victory
Male
English
Variant spelling of English unisex Tracy, TRACEY means "place of Thracius."
Surname or Lastname
English
English : perhaps a variant of Treece.
Male
Portuguese
Galician-Portuguese form of Roman Latin Victor, VITOR means "conqueror."
Male
Portuguese
Portuguese form of Latin Hector, HEITOR means "defend; hold fast."
Male
Scandinavian
 Scandinavian form of Roman Latin Victor, VIKTOR means "conqueror." Compare with another form of Viktor.
Male
Arthurian
, sir Hector de Maris; (defender).
Male
English
English surname transferred to unisex forename use, from a Norman baronial name TRACY means "place of Thracius."
Male
English
Roman Latin name VICTOR means "conqueror."Â
Boy/Male
English American
Doctor; teacher.
TRACE VECTOR-DECODER
TRACE VECTOR-DECODER
Girl/Female
Bengali, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Sindhi, Tamil, Telugu
Prosperous; Wife of the God Vishnu; Goddess Laxmi; Another Name of Goddess Parvati
Surname or Lastname
English
English : habitational name from any of the numerous places in southern and central England named Ashley, from Old English æsc ‘ash’ + lēah ‘woodland clearing’.The name of Capt. John Ashley appears in the VA Charter of 1609. For more than two centuries his descendants were prominent in Norfolk, VA. A branch of the family settled in Pittsburgh in the early 19th century.
Girl/Female
American, Australian, British, Chinese, Christian, Danish, Dutch, English, Finnish, French, German, Greek, Indian, Italian, Latin, Netherlands, Polish, Portuguese, Romanian, Swedish, Swiss
Small; Humble; String; Little
Boy/Male
Arabic, Indian, Muslim
Old Arabic Name
Girl/Female
American, Australian, British, English, German, Latin
Frenchwoman; A Free Man
Boy/Male
Indian, Punjabi, Sikh
Good Song
Female
English
English name derived from the vocabulary word, GAY means "happy." Compare with masculine Gay.
Girl/Female
Arabic, Australian, German, Latin, Muslim
Queen; Wise Guardian; Form of Regina
Male
Spanish
Spanish form of German Raginmund, RAMÓN means "wise protector."
Boy/Male
Arabic, Muslim
One who Relies Upon Allah
TRACE VECTOR-DECODER
TRACE VECTOR-DECODER
TRACE VECTOR-DECODER
TRACE VECTOR-DECODER
TRACE VECTOR-DECODER
v. t.
To mark out; to draw or delineate with marks; especially, to copy, as a drawing or engraving, by following the lines and marking them on a sheet superimposed, through which they appear; as, to trace a figure or an outline; a traced drawing.
n.
Same as Radius vector.
n.
The ratio of one vector to another in length, no regard being had to the direction of the two vectors; -- so called because considered as a stretching factor in changing one vector into another. See Versor.
v. t.
To follow the tracks or traces of; to pursue by following the marks of the feet; to trace; to trail; as, to track a deer in the snow.
n.
A directed quantity, as a straight line, a force, or a velocity. Vectors are said to be equal when their directions are the same their magnitudes equal. Cf. Scalar.
v. t.
A mark left by anything passing; a track; a path; a course; a footprint; a vestige; as, the trace of a carriage or sled; the trace of a deer; a sinuous trace.
n.
The turning factor of a quaternion.
n.
A tract or area, as of land.
v. t.
To add grace notes, cadenzas, etc., to.
v.
The trade winds.
n.
One who, or that which, traces.
v. t.
To trace out; to track; also, to draw out; to protact.
v.
Track; trace.
n.
A mark left by something that has passed along; as, the track, or wake, of a ship; the track of a meteor; the track of a sled or a wheel.
n.
A woman who wins a victory; a female victor.
imp. & p. p.
of Trace
v. t.
To supply with heavenly grace.
a.
Pertaining to a rector or a rectory; rectoral.
n.
An African weaver bird (Textor alector).
v. t.
Hence, to follow the trace or track of.