MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/01/00 through 12/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 441 943 1,384
Davis 602 54 656
Irvine 97 0 97
Los Angeles 125 176 301
Riverside 64 162 226
San Diego 47 385 432
San Francisco 179 0 179
Santa Barbara 33 138 171
Santa Cruz 47 147 194
Lawrence Berkeley 0 48 48
Lawrence Livermore 0 23 23
Los Alamos 0 0 0
Other - UC 4 90 94
Other-Network UC n/a 1,586 1,586
_______ ______ _____
1,639 3,752 5,391
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 4,757 13,961 137,170
BIO88 634 1,487 9,720
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 46 165 8,560
2-4 a.m. 26 90 897
4-6 a.m. 39 137 1,510
6-8 a.m. 136 381 3,251
8-10 a.m. 601 1,411 12,840
10-12 a.m. 1,063 2,795 23,925
12-2 p.m. 1,007 2,791 23,910
2-4 p.m. 1,168 3,645 33,630
4-6 p.m. 733 2,157 21,686
6-8 p.m. 311 1,018 8,650
8-10 p.m. 144 514 4,524
10-12 p.m. 117 344 3,507
__________ __________ __________ _________________
Total: 5,391 15,448 146,890
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,487 3,219 4,706
Davis 1,966 129 2,095
Irvine 305 0 305
Los Angeles 337 545 882
Riverside 190 366 556
San Diego 161 1,101 1,262
San Francisco 533 0 533
Santa Barbara 118 616 734
Santa Cruz 167 485 652
Lawrence Berkeley 0 108 108
Lawrence Livermore 0 65 65
Los Alamos 0 0 0
Other - UC 6 247 253
Other-Network UC n/a 3,297 3,297
_______ ______ _____
5,270 10,178 15,448
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12,738 30,352 43,090
Davis 19,092 1,274 20,366
Irvine 1,582 0 1,582
Los Angeles 2,816 5,414 8,230
Riverside 5,295 4,942 10,237
San Diego 944 9,285 10,229
San Francisco 3,988 0 3,988
Santa Barbara 623 5,743 6,366
Santa Cruz 1,278 6,858 8,136
Lawrence Berkeley 0 663 663
Lawrence Livermore 0 605 605
Los Alamos 0 0 0
Other - UC 18 3,126 3,144
Other-Network UC n/a 30,254 30,254
_______ ______ _____
48,374 98,516 146,890
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:50
Average session length (minutes:seconds) 15:03
Longest session recorded (minutes:seconds) 709:08
Average number of searches completed per session 2.8
Retrievals per search - median 8.0
Retrievals per search - average 989.6
Retrievals per search - standard deviation 9332.0
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 65.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 13,588 30.5%
DISPLAY (excluding automatic displays) 16,251 36.5%
BROWSE 0 0.0%
HELP 479 1.1%
EXPLAIN 532 1.2%
SET/RESET 2,781 6.3%
SHOW 92 0.2%
ADD ON (AND, OR, AND NOT) 1,860 4.2%
LOGON or LOGOFF 5,720 12.9%
COMMENT 1 0.0%
SAVE 1,658 3.7%
USE 12 0.0%
OTHER 1,508 3.4%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 5,107 33.9% 985 19.3% 19 140.6 561.4
TITLE WORD 2,606 17.3% 976 37.4% 7 502.8 3988.0
EXACT TITLE 108 0.7% 62 57.4% 1 273.0 1186.7
KEYWORD 5,270 35.0% 891 16.9% 26 2259.8 15088.9
JOURNAL 674 4.5% 272 40.4% 408 5785.3 16361.2
EXACT JOURNAL 218 1.4% 72 33.0% 619 3106.9 6679.8
SOURCE 4 0.0% 4 100% 0 0.0 0.0
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
BIOSYS NAMES 3 0.0% 3 100% 0 0.0 0.0
BIOSYS CODES 1 0.0% 0 0.0% 2 2.0 0.0
SUPERTAXA 2 0.0% 0 0.0% 18 17.5 14.8
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.0% 0 0.0% 2 147.7 253.2
PUBLICATION TYPE 4 0.0% 1 25.0% 3 3.7 2.1
DATE 69 0.5% 13 18.8% 7 133.4 528.2
LANGUAGE 13 0.1% 0 0.0% 47 62.6 66.0
ADDED 5 0.0% 0 0.0% 11 9.0 5.2
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 20 0.1% 10 50.0% 23 173.0 464.7
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.0% 1 50.0% 426 426.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 509 3.4% 105 20.6% 5 128.1 1026.7
EXACT PE 64 0.4% 6 9.4% 3 13.0 26.6
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 376 2.5% 71 18.9% 11 1834.0 22049.5
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 1,501 11.1% 452 30.1% 5 126.4 1098.1
Single 11,965 88.9% 2,543 21.3% 26 1532.7 11747.5
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
CONCEPT CODES 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 86.6%
LONG 1.7%
TAGS 0.5%
FIELDS 1.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. NS command - no next screen 33.1%
2. First word of command is invalid 28.4%
3. FIND command with invalid index name 10.1%
4. DISPLAY command contains invalid word 3.8%
5. PS command - no previous screen 3.4%
6. Max. # of ports to a Z39 db are in use 3.1%
7. Valid command at an inappropriate time 2.0%
8. DATE search with unrecognized word 1.7%
9. Search term missing from search command 1.6%
10. Index invalid in current database 1.1%
11. All others 11.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.6%
2. LOCATE (BIO DB) 18.2%
3. FIND 9.8%
4. INDEXES 7.1%
5. Unrecognized term 6.0%
6. COMMANDS 4.9%
7. BIOSIS DATABASE 2.8%
8. ADDON SEARCH 2.6%
9. DISPLAY 2.4%
10. DATE 1.7%
11. All others 21.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.6%
2. First word of command is invalid 16.0%
3. FIND command with invalid index name 10.8%
4. DISPLAY command-first of >1 screen 6.8%
5. FIND command with zero results 5.0%
6. FIND command retrieves >1 book 4.9%
7. DISPLAY command - middle of >1 screen 4.1%
8. DISPLAY command-complete in one screen 3.8%
9. DISPLAY command - last of >1 screen 3.6%
10. 117 2.2%
11. All others 22.3%
Ten most frequent SHOW requests:
1. HISTORY 54.4%
2. SEARCH 25.6%
3. BIOSIS NEWS 5.6%
4. SETTINGS 2.2%
5. GLOSSARY 2.2%
6. SYSTEM NEWS 2.2%
7. PUBLICATION TYPES 1.1%
8. STOPWORDS 1.1%
9. TAXONOMIC GUIDE 1.1%
10. TAXONOMIC GUIDE: ANIMALS 1.1%
11. All others 3.3%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)