MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/10/01 through 02/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 220 391 611
Davis 186 6 192
Irvine 49 0 49
Los Angeles 34 27 61
Riverside 26 39 65
San Diego 34 77 111
San Francisco 39 0 39
Santa Barbara 19 17 36
Santa Cruz 29 66 95
Lawrence Berkeley 0 13 13
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 1 58 59
Other-Network UC n/a 516 516
_______ ______ _____
637 1,216 1,853
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,638 4,781 44,714
BIO88 215 435 2,957
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 47 985
2-4 a.m. 9 19 169
4-6 a.m. 3 9 53
6-8 a.m. 22 64 697
8-10 a.m. 189 471 3,850
10-12 a.m. 380 898 8,148
12-2 p.m. 344 1,127 9,092
2-4 p.m. 376 1,108 11,416
4-6 p.m. 299 759 6,285
6-8 p.m. 114 340 2,507
8-10 p.m. 66 236 2,502
10-12 p.m. 36 138 1,967
__________ __________ __________ _________________
Total: 1,853 5,216 47,671
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 917 1,365 2,282
Davis 501 14 515
Irvine 125 0 125
Los Angeles 76 73 149
Riverside 51 157 208
San Diego 76 162 238
San Francisco 101 0 101
Santa Barbara 97 34 131
Santa Cruz 96 221 317
Lawrence Berkeley 0 22 22
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 7 63 70
Other-Network UC n/a 1,045 1,045
_______ ______ _____
2,047 3,169 5,216
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,368 12,302 19,670
Davis 6,461 51 6,512
Irvine 1,764 0 1,764
Los Angeles 430 940 1,370
Riverside 337 1,880 2,217
San Diego 671 1,286 1,957
San Francisco 1,422 0 1,422
Santa Barbara 477 1,453 1,930
Santa Cruz 407 2,094 2,501
Lawrence Berkeley 0 56 56
Lawrence Livermore 0 139 139
Los Alamos 0 0 0
Other - UC 72 108 180
Other-Network UC n/a 7,953 7,953
_______ ______ _____
19,409 28,262 47,671
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 3.3
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) 6:36
Average session length (minutes:seconds) 12:11
Longest session recorded (minutes:seconds) 236:26
Average number of searches completed per session 2.8
Retrievals per search - median 8.0
Retrievals per search - average 1548.8
Retrievals per search - standard deviation 30846
Percent of searches completed with 0 results 24.3%
Percent of searches entered that are long 1.8%
Percent of long searches completed
(includes partial results) 57.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,650 31.6%
DISPLAY (excluding automatic displays) 4,945 33.6%
BROWSE 0 0.0%
HELP 331 2.2%
EXPLAIN 311 2.1%
SET/RESET 889 6.0%
SHOW 27 0.2%
ADD ON (AND, OR, AND NOT) 566 3.8%
LOGON or LOGOFF 2,042 13.9%
COMMENT 0 0.0%
SAVE 415 2.8%
USE 2 0.0%
OTHER 560 3.8%
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 1,687 32.1% 343 20.3% 15 113.2 406.3
TITLE WORD 991 18.8% 331 33.4% 6 827.7 6009.1
EXACT TITLE 48 0.9% 25 52.1% 1 7.7 21.0
KEYWORD 1,851 35.2% 344 18.6% 33 4228.6 56430.2
JOURNAL 234 4.4% 127 54.3% 201 6699.7 26032.9
EXACT JOURNAL 63 1.2% 23 36.5% 208 493.9 616.6
SOURCE 2 0.0% 2 100% 0 0.0 0.0
CONFERENCE 2 0.0% 1 50.0% 8,293 8293.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 23 0.4% 6 26.1% 4 10.5 15.0
LANGUAGE 2 0.0% 0 0.0% 139 139.0 0.0
ADDED 1 0.0% 0 0.0% 24 24.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 8 0.2% 3 37.5% 701 4469.2 5797.9
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 187 3.6% 44 23.5% 5 126.2 1059.2
EXACT PE 40 0.8% 7 17.5% 6 12.5 23.1
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 122 2.3% 26 21.3% 8 343.8 2072.8
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 620 13.5% 178 28.7% 4 34.7 224.4
Single 3,983 86.5% 918 23.0% 28 2564.3 40008.3
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 3.4%
SHORT 84.4%
LONG 1.4%
TAGS 0.6%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.1%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.6%
Ten most frequent errors:
1. First word of command is invalid 31.2%
2. NS command - no next screen 26.4%
3. FIND command with invalid index name 13.0%
4. PS command - no previous screen 4.3%
5. DISPLAY command contains invalid word 3.8%
6. Search term missing from search command 2.9%
7. Valid command at an inappropriate time 2.2%
8. NS of SHOW/EXP command-no next screen 2.1%
9. Max. # of ports to a Z39 db are in use 1.8%
10. DATE search with unrecognized word 1.4%
11. All others 10.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.5%
2. LOCATE (BIO DB) 20.6%
3. FIND 7.1%
4. COMMANDS 6.1%
5. Unrecognized term 5.8%
6. INDEXES 4.8%
7. ADDON SEARCH 4.2%
8. BIOSIS DATABASE 3.9%
9. DISPLAY 3.2%
10. BIOSIS NEWS 2.6%
11. All others 20.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.6%
2. First word of command is invalid 15.3%
3. FIND command with invalid index name 11.7%
4. DISPLAY command-first of >1 screen 8.4%
5. FIND command retrieves >1 book 4.5%
6. DISPLAY command - last of >1 screen 3.9%
7. FIND command with zero results 3.6%
8. PS command - no previous screen 3.0%
9. DISPLAY command-complete in one screen 3.0%
10. DISPLAY command - middle of >1 screen 3.0%
11. All others 19.2%
Ten most frequent SHOW requests:
1. HISTORY 38.5%
2. SEARCH 23.1%
3. BIOSIS NEWS 15.4%
4. SETTINGS 7.7%
5. GLOSSARY 7.7%
6. STOPWORDS 3.8%
7. SYSTEM NEWS 3.8%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)