MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/05/02 through 01/11/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 23 313 336
Davis 241 2 243
Irvine 20 0 20
Los Angeles 0 73 73
Riverside 5 34 39
San Diego 43 66 109
San Francisco 45 0 45
Santa Barbara 2 23 25
Santa Cruz 2 32 34
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 0 24 24
Other-Network UC n/a 515 515
_______ ______ _____
381 1,106 1,487
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,274 4,011 32,010
BIO88 213 542 2,454
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 38 280
2-4 a.m. 8 31 774
4-6 a.m. 19 38 300
6-8 a.m. 21 51 503
8-10 a.m. 199 514 2,437
10-12 a.m. 316 974 6,283
12-2 p.m. 284 840 7,183
2-4 p.m. 355 1,105 8,791
4-6 p.m. 170 521 4,576
6-8 p.m. 57 254 1,506
8-10 p.m. 22 105 796
10-12 p.m. 23 82 1,035
__________ __________ __________ _________________
Total: 1,487 4,553 34,464
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 101 924 1,025
Davis 987 11 998
Irvine 74 0 74
Los Angeles 0 225 225
Riverside 9 82 91
San Diego 110 233 343
San Francisco 143 0 143
Santa Barbara 3 40 43
Santa Cruz 7 119 126
Lawrence Berkeley 0 24 24
Lawrence Livermore 0 77 77
Los Alamos 0 0 0
Other - UC 0 54 54
Other-Network UC n/a 1,330 1,330
_______ ______ _____
1,434 3,119 4,553
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 863 8,536 9,399
Davis 8,059 36 8,095
Irvine 380 0 380
Los Angeles 0 2,570 2,570
Riverside 100 1,044 1,144
San Diego 111 1,692 1,803
San Francisco 773 0 773
Santa Barbara 5 215 220
Santa Cruz 19 1,604 1,623
Lawrence Berkeley 0 40 40
Lawrence Livermore 0 645 645
Los Alamos 0 0 0
Other - UC 0 490 490
Other-Network UC n/a 7,282 7,282
_______ ______ _____
10,310 24,154 34,464
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.1
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) 11:48
Average session length (minutes:seconds) 15:51
Longest session recorded (minutes:seconds) 541:12
Average number of searches completed per session 3.0
Retrievals per search - median 8.0
Retrievals per search - average 791.8
Retrievals per search - standard deviation 8805.0
Percent of searches completed with 0 results 21.3%
Percent of searches entered that are long 2.7%
Percent of long searches completed
(includes partial results) 63.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,817 32.6%
DISPLAY (excluding automatic displays) 4,082 34.8%
BROWSE 0 0.0%
HELP 103 0.9%
EXPLAIN 74 0.6%
SET/RESET 731 6.2%
SHOW 15 0.1%
ADD ON (AND, OR, AND NOT) 736 6.3%
LOGON or LOGOFF 1,590 13.6%
COMMENT 0 0.0%
SAVE 227 1.9%
USE 3 0.0%
OTHER 345 2.9%
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 1,451 33.8% 284 19.6% 21 161.8 575.4
TITLE WORD 639 14.9% 218 34.1% 5 451.2 2412.4
EXACT TITLE 44 1.0% 26 59.1% 2 26.3 69.2
KEYWORD 1,438 33.5% 236 16.4% 23 1540.7 12078.2
JOURNAL 155 3.6% 62 40.0% 468 9306.5 27278.1
EXACT JOURNAL 30 0.7% 12 40.0% 1,078 3870.3 6638.7
SOURCE 3 0.1% 2 66.7% 71 71.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 1 0.0% 0 0.0% 13 13.0 0.0
SUPERTAXA 3 0.1% 0 0.0% 12 14.3 4.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 19 19.0 0.0
PUBLICATION TYPE 1 0.0% 0 0.0% 19 19.0 0.0
DATE 40 0.9% 9 22.5% 5 31.5 47.5
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 66 1.5% 10 15.2% 14 106.0 221.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 7,298 7298.0 0.0
ISBN 1 0.0% 0 0.0% 106 106.0 0.0
PERIODICAL 261 6.1% 31 11.9% 4 28.9 99.0
EXACT PE 47 1.1% 1 2.1% 4 18.0 60.8
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 116 2.7% 16 13.8% 11 149.0 886.0
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 478 12.7% 118 24.7% 5 31.9 100.5
Single 3,294 87.3% 660 20.0% 23 1207.2 9837.8
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 2.6%
SHORT 80.2%
LONG 2.3%
TAGS 0.5%
FIELDS 3.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 9.4%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.1%
Ten most frequent errors:
1. NS command - no next screen 37.0%
2. First word of command is invalid 22.9%
3. FIND command with invalid index name 11.3%
4. PS command - no previous screen 3.6%
5. 1281 3.4%
6. Search term missing from search command 3.1%
7. DISPLAY command contains invalid word 2.6%
8. DATE search with unrecognized word 2.2%
9. Index invalid in current database 1.7%
10. Valid command at an inappropriate time 1.2%
11. All others 11.1%
Ten most frequent EXPLAIN requests:
1. FIND 17.6%
2. GUIDE 14.9%
3. INDEXES 12.2%
4. LOCATE (BIO DB) 10.8%
5. BIOSIS DATABASE 8.1%
6. COMMANDS 6.8%
7. Unrecognized term 5.4%
8. DATE 2.7%
9. DISPLAY 2.7%
10. BIOSIS BACKFILES 2.7%
11. All others 16.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.8%
2. FIND command with invalid index name 14.1%
3. First word of command is invalid 11.3%
4. DISPLAY command-first of >1 screen 7.9%
5. 1281 6.2%
6. FIND command retrieves >1 book 5.1%
7. DISPLAY command - middle of >1 screen 4.0%
8. FIND command with zero results 3.4%
9. BROWSE command with invalid index name 2.8%
10. DISPLAY command-complete in one screen 2.8%
11. All others 22.6%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SEARCH 20.0%
3. BIOSIS NEWS 6.7%
4. GLOSSARY 6.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)