MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/01/02 through 03/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 295 1,230 1,525
Davis 843 4 847
Irvine 116 0 116
Los Angeles 1 300 301
Riverside 17 66 83
San Diego 91 173 264
San Francisco 176 0 176
Santa Barbara 3 77 80
Santa Cruz 6 95 101
Lawrence Berkeley 0 17 17
Lawrence Livermore 0 35 35
Los Alamos 0 0 0
Other - UC 5 128 133
Other-Network UC n/a 1,683 1,683
_______ ______ _____
1,553 3,808 5,361
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 4,745 15,488 139,998
BIO88 616 1,604 10,711
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 79 420
2-4 a.m. 58 101 972
4-6 a.m. 40 167 777
6-8 a.m. 108 332 5,324
8-10 a.m. 734 2,272 17,617
10-12 a.m. 1,049 3,169 26,021
12-2 p.m. 943 2,781 20,846
2-4 p.m. 1,089 3,566 30,937
4-6 p.m. 725 2,690 28,538
6-8 p.m. 346 1,055 10,673
8-10 p.m. 155 557 4,983
10-12 p.m. 89 323 3,601
__________ __________ __________ _________________
Total: 5,361 17,092 150,709
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 856 4,228 5,084
Davis 3,639 14 3,653
Irvine 487 0 487
Los Angeles 1 932 933
Riverside 26 185 211
San Diego 457 570 1,027
San Francisco 1,079 0 1,079
Santa Barbara 1 268 269
Santa Cruz 5 284 289
Lawrence Berkeley 0 37 37
Lawrence Livermore 0 125 125
Los Alamos 0 0 0
Other - UC 11 284 295
Other-Network UC n/a 3,603 3,603
_______ ______ _____
6,562 10,530 17,092
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,430 52,090 59,520
Davis 27,777 35 27,812
Irvine 3,239 0 3,239
Los Angeles 19 12,454 12,473
Riverside 200 1,684 1,884
San Diego 2,466 5,184 7,650
San Francisco 7,182 0 7,182
Santa Barbara 4 5,444 5,448
Santa Cruz 49 4,563 4,612
Lawrence Berkeley 0 271 271
Lawrence Livermore 0 1,353 1,353
Los Alamos 0 0 0
Other - UC 116 2,584 2,700
Other-Network UC n/a 16,565 16,565
_______ ______ _____
48,482 102,227 150,709
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 4.5
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) 9:40
Average session length (minutes:seconds) 14:15
Longest session recorded (minutes:seconds) 578:01
Average number of searches completed per session 3.2
Retrievals per search - median 8.0
Retrievals per search - average 942.0
Retrievals per search - standard deviation 9749.3
Percent of searches completed with 0 results 24.1%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 66.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 14,721 30.8%
DISPLAY (excluding automatic displays) 18,001 37.6%
BROWSE 0 0.0%
HELP 610 1.3%
EXPLAIN 531 1.1%
SET/RESET 2,462 5.1%
SHOW 115 0.2%
ADD ON (AND, OR, AND NOT) 2,371 5.0%
LOGON or LOGOFF 6,263 13.1%
COMMENT 0 0.0%
SAVE 1,282 2.7%
USE 7 0.0%
OTHER 1,490 3.1%
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 4,707 29.1% 968 20.6% 22 165.9 980.7
TITLE WORD 3,438 21.3% 1,259 36.6% 12 489.1 4100.8
EXACT TITLE 95 0.6% 56 58.9% 2 71.7 313.7
KEYWORD 5,782 35.8% 1,146 19.8% 28 2026.4 16924.8
JOURNAL 681 4.2% 261 38.3% 454 5275.2 18893.7
EXACT JOURNAL 237 1.5% 88 37.1% 1,059 3763.8 7605.5
SOURCE 6 0.0% 4 66.7% 5,730 5730.0 8099.2
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 2 0.0% 0 0.0% 9 9.0 0.0
BIOSYS CODES 7 0.0% 2 28.6% 54 139.8 178.6
SUPERTAXA 1 0.0% 0 0.0% 7 7.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 10 0.1% 2 20.0% 7 89.1 152.1
PUBLICATION TYPE 1 0.0% 1 100% 0 0.0 0.0
DATE 60 0.4% 8 13.3% 6 136.9 509.5
LANGUAGE 7 0.0% 1 14.3% 142 229.3 307.3
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 4 0.0% 0 0.0% 43 43.0 0.0
AUTHOR AFFIL. 55 0.3% 22 40.0% 35 1939.3 5289.9
ACCESSION NO. 10 0.1% 2 20.0% 1 1.0 0.0
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 513 3.2% 79 15.4% 4 51.7 639.2
EXACT PE 144 0.9% 6 4.2% 3 27.7 153.2
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 410 2.5% 102 24.9% 8 699.1 8639.6
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 1,444 9.9% 502 34.8% 5 63.0 411.3
Single 13,158 90.1% 2,968 22.6% 28 1380.5 12390.2
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 2.9%
SHORT 85.2%
LONG 1.4%
TAGS 1.0%
FIELDS 3.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. NS command - no next screen 31.3%
2. First word of command is invalid 27.5%
3. FIND command with invalid index name 10.7%
4. PS command - no previous screen 4.0%
5. DISPLAY command - no FIND results 3.9%
6. DATE search with unrecognized word 3.4%
7. DISPLAY command contains invalid word 3.0%
8. Search term missing from search command 2.5%
9. Valid command at an inappropriate time 1.8%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 25.2%
2. GUIDE 19.8%
3. FIND 10.9%
4. COMMANDS 7.5%
5. Unrecognized term 5.1%
6. INDEXES 4.5%
7. ADDON SEARCH 3.8%
8. BIOSIS DATABASE 3.4%
9. DISPLAY 3.0%
10. MAIL 2.3%
11. All others 14.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.3%
2. First word of command is invalid 13.1%
3. FIND command with invalid index name 10.8%
4. DISPLAY command-first of >1 screen 8.5%
5. FIND command with zero results 6.7%
6. DISPLAY command - middle of >1 screen 5.3%
7. FIND command retrieves >1 book 4.2%
8. DISPLAY command - last of >1 screen 3.6%
9. DISPLAY command-complete in one screen 3.2%
10. PS command - no previous screen 2.4%
11. All others 17.0%
Ten most frequent SHOW requests:
1. HISTORY 66.3%
2. SEARCH 18.0%
3. SYSTEM NEWS 3.4%
4. MAIL STATUS 3.4%
5. GLOSSARY 2.2%
6. PUBLICATION TYPES 1.1%
7. BIOSIS NEWS 1.1%
8. TAXONOMIC GUIDE 1.1%
9. DISEASE INDEX 1.1%
10. UCB LIBRARY HOURS 1.1%
11. All others 1.1%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)