MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/01/01 through 01/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 398 1,242 1,640
Davis 945 38 983
Irvine 140 0 140
Los Angeles 66 188 254
Riverside 91 191 282
San Diego 106 242 348
San Francisco 183 0 183
Santa Barbara 45 224 269
Santa Cruz 66 294 360
Lawrence Berkeley 0 43 43
Lawrence Livermore 0 42 42
Los Alamos 0 0 0
Other - UC 1 95 96
Other-Network UC n/a 2,066 2,066
_______ ______ _____
2,041 4,665 6,706
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 5,904 17,137 187,087
BIO88 802 1,908 11,507
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 39 117 1,204
2-4 a.m. 24 64 19,761
4-6 a.m. 51 160 2,457
6-8 a.m. 151 399 4,482
8-10 a.m. 725 1,950 17,840
10-12 a.m. 1,287 3,549 27,739
12-2 p.m. 1,170 3,075 31,217
2-4 p.m. 1,408 4,044 40,001
4-6 p.m. 1,059 3,127 30,572
6-8 p.m. 418 1,301 13,205
8-10 p.m. 211 744 6,309
10-12 p.m. 163 515 3,807
__________ __________ __________ _________________
Total: 6,706 19,045 198,594
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 1,584 4,123 5,707
Davis 3,062 123 3,185
Irvine 400 0 400
Los Angeles 210 489 699
Riverside 246 479 725
San Diego 319 643 962
San Francisco 563 0 563
Santa Barbara 172 769 941
Santa Cruz 199 1,001 1,200
Lawrence Berkeley 0 99 99
Lawrence Livermore 0 145 145
Los Alamos 0 0 0
Other - UC 2 299 301
Other-Network UC n/a 4,118 4,118
_______ ______ _____
6,757 12,288 19,045
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 14,553 44,629 59,182
Davis 28,685 750 29,435
Irvine 3,582 0 3,582
Los Angeles 2,009 4,774 6,783
Riverside 2,449 4,890 7,339
San Diego 1,743 8,247 9,990
San Francisco 4,588 0 4,588
Santa Barbara 1,136 5,708 6,844
Santa Cruz 1,081 11,003 12,084
Lawrence Berkeley 0 695 695
Lawrence Livermore 0 2,473 2,473
Los Alamos 0 0 0
Other - UC 15 3,175 3,190
Other-Network UC n/a 52,409 52,409
_______ ______ _____
59,841 138,753 198,594
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 5.2
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) 8:51
Average session length (minutes:seconds) 13:53
Longest session recorded (minutes:seconds) 1240
Average number of searches completed per session 2.8
Retrievals per search - median 10.0
Retrievals per search - average 1217.8
Retrievals per search - standard deviation 17552
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 65.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 16,464 29.9%
DISPLAY (excluding automatic displays) 19,760 35.9%
BROWSE 3 0.0%
HELP 549 1.0%
EXPLAIN 654 1.2%
SET/RESET 3,494 6.3%
SHOW 206 0.4%
ADD ON (AND, OR, AND NOT) 2,581 4.7%
LOGON or LOGOFF 6,929 12.6%
COMMENT 0 0.0%
SAVE 2,506 4.6%
USE 13 0.0%
OTHER 1,905 3.5%
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 6,718 36.8% 1,305 19.4% 22 145.5 713.2
TITLE WORD 3,009 16.5% 1,227 40.8% 9 554.1 2652.6
EXACT TITLE 93 0.5% 51 54.8% 2 173.9 490.7
KEYWORD 5,906 32.4% 1,061 18.0% 35 2107.0 16874.5
JOURNAL 736 4.0% 308 41.8% 376 5438.4 21669.7
EXACT JOURNAL 334 1.8% 148 44.3% 396 1749.4 3315.0
SOURCE 14 0.1% 11 78.6% 101 70.7 60.5
CONFERENCE 8 0.0% 7 87.5% 59 59.0 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 7 0.0% 1 14.3% 658 974.5 1281.5
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 8 0.0% 1 12.5% 41 108.9 134.1
PUBLICATION TYPE 2 0.0% 1 50.0% 6 6.0 0.0
DATE 53 0.3% 10 18.9% 6 34.1 106.1
LANGUAGE 41 0.2% 2 4.9% 173 2041.7 4686.2
ADDED 7 0.0% 2 28.6% 23 21.4 5.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 25 0.1% 6 24.0% 26 2013.4 6363.3
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 5 0.0% 4 80.0% 90 90.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 588 3.2% 134 22.8% 6 217.8 1331.6
EXACT PE 104 0.6% 14 13.5% 4 23.4 63.6
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 579 3.2% 90 15.5% 26 941.9 5264.9
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 1,801 11.0% 577 32.0% 7 206.2 1328.1
Single 14,516 89.0% 3,198 22.0% 30 1309.7 11984.1
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 3 100% 1 33.3% 3 2.5 2.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 85.5%
LONG 2.0%
TAGS 0.7%
FIELDS 2.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 33.6%
2. First word of command is invalid 28.1%
3. FIND command with invalid index name 10.8%
4. DISPLAY command contains invalid word 3.8%
5. Max. # of ports to a Z39 db are in use 3.2%
6. PS command - no previous screen 3.0%
7. Search term missing from search command 1.9%
8. Valid command at an inappropriate time 1.5%
9. Index invalid in current database 1.4%
10. DATE search with unrecognized word 1.2%
11. All others 11.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.3%
2. LOCATE (BIO DB) 11.8%
3. FIND 10.9%
4. INDEXES 6.9%
5. COMMANDS 5.8%
6. BIOSIS DATABASE 5.7%
7. Unrecognized term 5.0%
8. DISPLAY 3.1%
9. MAIL 2.9%
10. UPDATE SEARCH 2.8%
11. All others 28.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.4%
2. First word of command is invalid 12.0%
3. FIND command with invalid index name 9.6%
4. DISPLAY command-first of >1 screen 6.7%
5. DISPLAY command - middle of >1 screen 5.8%
6. FIND command with zero results 5.4%
7. FIND command retrieves >1 book 4.9%
8. DISPLAY command - last of >1 screen 2.8%
9. NS command - no next screen 2.7%
10. DISPLAY command-complete in one screen 2.6%
11. All others 22.0%
Ten most frequent SHOW requests:
1. HISTORY 67.1%
2. SEARCH 6.8%
3. GLOSSARY 6.2%
4. MAIL STATUS 6.2%
5. MAIL SETTINGS 2.7%
6. BIOSIS NEWS 2.1%
7. SUPERTAXA HIERARCHICAL TABLE 1.4%
8. SUPERTAXA ALPHABETICAL TABLE 1.4%
9. SETTINGS 1.4%
10. B902 1.4%
11. All others 3.4%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)