MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 10/01/01 through 10/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 261 1,200 1,461
Davis 599 35 634
Irvine 59 0 59
Los Angeles 1 247 248
Riverside 32 119 151
San Diego 58 209 267
San Francisco 148 0 148
Santa Barbara 22 156 178
Santa Cruz 10 141 151
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 35 35
Los Alamos 0 0 0
Other - UC 2 148 150
Other-Network UC n/a 1,961 1,961
_______ ______ _____
1,192 4,262 5,454
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 4,728 13,073 121,069
BIO88 726 1,429 9,065
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 31 123 1,665
2-4 a.m. 22 149 709
4-6 a.m. 25 101 728
6-8 a.m. 140 373 3,631
8-10 a.m. 749 1,781 12,434
10-12 a.m. 1,106 2,750 22,979
12-2 p.m. 994 2,572 23,550
2-4 p.m. 1,047 2,771 28,539
4-6 p.m. 757 2,071 20,499
6-8 p.m. 295 850 8,000
8-10 p.m. 172 596 4,435
10-12 p.m. 116 365 2,965
__________ __________ __________ _________________
Total: 5,454 14,502 130,134
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 799 3,768 4,567
Davis 1,861 72 1,933
Irvine 222 0 222
Los Angeles 13 798 811
Riverside 94 320 414
San Diego 266 614 880
San Francisco 580 0 580
Santa Barbara 76 474 550
Santa Cruz 17 361 378
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 98 98
Los Alamos 0 0 0
Other - UC 4 244 248
Other-Network UC n/a 3,790 3,790
_______ ______ _____
3,932 10,570 14,502
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,817 42,206 50,023
Davis 18,839 861 19,700
Irvine 1,282 0 1,282
Los Angeles 14 6,800 6,814
Riverside 556 6,416 6,972
San Diego 845 5,818 6,663
San Francisco 3,853 0 3,853
Santa Barbara 305 3,870 4,175
Santa Cruz 65 3,154 3,219
Lawrence Berkeley 0 160 160
Lawrence Livermore 0 1,054 1,054
Los Alamos 0 0 0
Other - UC 2 1,861 1,863
Other-Network UC n/a 24,356 24,356
_______ ______ _____
33,578 96,556 130,134
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 4.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 9:30
Average session length (minutes:seconds) 13:22
Longest session recorded (minutes:seconds) 408:31
Average number of searches completed per session 2.6
Retrievals per search - median 7.0
Retrievals per search - average 769.3
Retrievals per search - standard deviation 7757.0
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 2.1%
Percent of long searches completed
(includes partial results) 74.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,664 31.3%
DISPLAY (excluding automatic displays) 14,169 35.0%
BROWSE 1 0.0%
HELP 511 1.3%
EXPLAIN 481 1.2%
SET/RESET 3,027 7.5%
SHOW 106 0.3%
ADD ON (AND, OR, AND NOT) 1,838 4.5%
LOGON or LOGOFF 5,300 13.1%
COMMENT 0 0.0%
SAVE 1,029 2.5%
USE 9 0.0%
OTHER 1,351 3.3%
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 4,804 33.8% 953 19.8% 21 127.2 507.2
TITLE WORD 2,693 19.0% 1,053 39.1% 7 670.3 5083.8
EXACT TITLE 107 0.8% 64 59.8% 1 8.2 27.8
KEYWORD 4,378 30.8% 858 19.6% 31 1819.0 13056.6
JOURNAL 548 3.9% 261 47.6% 333 5649.6 23838.1
EXACT JOURNAL 364 2.6% 173 47.5% 415 4659.1 12346.2
SOURCE 2 0.0% 2 100% 0 0.0 0.0
CONFERENCE 2 0.0% 2 100% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 3 0.0% 2 66.7% 26 26.0 0.0
SUPERTAXA 2 0.0% 0 0.0% 705 704.5 910.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 8 0.1% 0 0.0% 7 16.4 19.8
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 57 0.4% 16 28.1% 8 37.1 63.7
LANGUAGE 32 0.2% 5 15.6% 7 166.1 451.7
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. 60 0.4% 8 13.3% 80 1461.9 3925.7
ACCESSION NO. 17 0.1% 1 5.9% 1 1.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 2 0.0% 0 0.0% 62 62.0 52.3
PERIODICAL 535 3.8% 87 16.3% 4 246.0 2130.9
EXACT PE 125 0.9% 10 8.0% 3 13.9 40.8
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 464 3.3% 94 20.3% 13 506.5 4730.7
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 1,563 12.4% 503 32.2% 5 61.8 340.3
Single 10,994 87.6% 2,562 23.3% 27 1275.4 10087.0
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 1 100% 1 100% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 83.5%
LONG 1.7%
TAGS 0.8%
FIELDS 2.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.2%
COMMENTS 0.0%
Other 1.9%
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 32.9%
2. First word of command is invalid 29.4%
3. FIND command with invalid index name 11.7%
4. PS command - no previous screen 3.8%
5. DISPLAY command contains invalid word 3.5%
6. Search term missing from search command 2.3%
7. DATE search with unrecognized word 2.1%
8. Valid command at an inappropriate time 1.7%
9. Max. # of ports to a Z39 db are in use 1.6%
10. Index invalid in current database 0.9%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 22.2%
2. GUIDE 16.8%
3. FIND 10.8%
4. INDEXES 9.1%
5. COMMANDS 6.0%
6. BIOSIS DATABASE 4.6%
7. ADDON SEARCH 3.3%
8. Unrecognized term 3.1%
9. DATABASES 1.9%
10. DISPLAY 1.7%
11. All others 20.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.5%
2. First word of command is invalid 16.0%
3. FIND command with invalid index name 12.4%
4. DISPLAY command-first of >1 screen 11.8%
5. DISPLAY command - middle of >1 screen 4.9%
6. FIND command retrieves >1 book 4.4%
7. FIND command with zero results 3.8%
8. DISPLAY command-complete in one screen 3.2%
9. PS command - no previous screen 3.0%
10. NS command - no next screen 2.4%
11. All others 18.4%
Ten most frequent SHOW requests:
1. HISTORY 57.3%
2. SEARCH 12.6%
3. MAIL STATUS 8.7%
4. BIOSIS NEWS 6.8%
5. SYSTEM NEWS 4.9%
6. SETTINGS 2.9%
7. GLOSSARY 1.0%
8. SYSTEM6 NEWS 1.0%
9. UCSF NEWS 1.0%
10. LIBRARY NEWS 1.0%
11. All others 2.9%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)