MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/09/00 through 12/15/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 80 259 339
Davis 177 19 196
Irvine 23 0 23
Los Angeles 36 55 91
Riverside 17 39 56
San Diego 11 90 101
San Francisco 53 0 53
Santa Barbara 11 50 61
Santa Cruz 14 42 56
Lawrence Berkeley 0 8 8
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 24 24
Other-Network UC n/a 412 412
_______ ______ _____
422 1,006 1,428
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,247 3,912 35,516
BIO88 181 442 3,160
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 19 270
2-4 a.m. 9 43 406
4-6 a.m. 14 75 734
6-8 a.m. 56 150 1,370
8-10 a.m. 142 343 3,298
10-12 a.m. 266 744 6,457
12-2 p.m. 262 786 8,088
2-4 p.m. 305 967 8,389
4-6 p.m. 202 662 5,849
6-8 p.m. 91 288 1,820
8-10 p.m. 47 206 1,328
10-12 p.m. 24 71 667
__________ __________ __________ _________________
Total: 1,428 4,354 38,676
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 284 932 1,216
Davis 568 45 613
Irvine 103 0 103
Los Angeles 111 152 263
Riverside 41 109 150
San Diego 39 266 305
San Francisco 198 0 198
Santa Barbara 47 229 276
Santa Cruz 69 162 231
Lawrence Berkeley 0 16 16
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 1 69 70
Other-Network UC n/a 902 902
_______ ______ _____
1,461 2,893 4,354
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,721 9,059 11,780
Davis 6,278 273 6,551
Irvine 451 0 451
Los Angeles 831 1,740 2,571
Riverside 428 1,099 1,527
San Diego 127 2,640 2,767
San Francisco 1,557 0 1,557
Santa Barbara 381 1,166 1,547
Santa Cruz 523 2,187 2,710
Lawrence Berkeley 0 133 133
Lawrence Livermore 0 67 67
Los Alamos 0 0 0
Other - UC 0 687 687
Other-Network UC n/a 6,328 6,328
_______ ______ _____
13,297 25,379 38,676
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 4.2
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) 9:54
Average session length (minutes:seconds) 15:50
Longest session recorded (minutes:seconds) 463:26
Average number of searches completed per session 3.0
Retrievals per search - median 7.0
Retrievals per search - average 777.9
Retrievals per search - standard deviation 7445.7
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 2.1%
Percent of long searches completed
(includes partial results) 65.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,842 31.2%
DISPLAY (excluding automatic displays) 4,439 36.1%
BROWSE 0 0.0%
HELP 156 1.3%
EXPLAIN 158 1.3%
SET/RESET 758 6.2%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 512 4.2%
LOGON or LOGOFF 1,475 12.0%
COMMENT 0 0.0%
SAVE 545 4.4%
USE 4 0.0%
OTHER 402 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 1,647 38.2% 300 18.2% 16 135.5 566.8
TITLE WORD 775 18.0% 287 37.0% 5 642.3 4974.3
EXACT TITLE 47 1.1% 31 66.0% 2 306.9 1192.4
KEYWORD 1,237 28.7% 217 17.5% 24 1425.3 12103.6
JOURNAL 233 5.4% 96 41.2% 319 7093.4 19006.6
EXACT JOURNAL 74 1.7% 26 35.1% 537 3341.2 6783.6
SOURCE 3 0.1% 3 100% 0 0.0 0.0
CONFERENCE 1 0.0% 1 100% 0 0.0 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 2 0.0% 0 0.0% 18 17.5 14.8
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 2 0.0% 0 0.0% 221 220.5 310.4
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 22 0.5% 3 13.6% 4 166.4 478.1
LANGUAGE 1 0.0% 0 0.0% 23 23.0 0.0
ADDED 1 0.0% 0 0.0% 5 5.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 2 0.0% 1 50.0% 78 78.0 0.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 158 3.7% 34 21.5% 7 31.6 66.5
EXACT PE 12 0.3% 2 16.7% 3 12.8 18.9
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 90 2.1% 19 21.1% 11 1243.5 6837.4
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 479 12.6% 135 28.2% 3 143.9 928.3
Single 3,333 87.4% 748 22.4% 24 1192.9 9267.1
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 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.5%
SHORT 87.2%
LONG 1.3%
TAGS 0.1%
FIELDS 1.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.8%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 34.1%
2. First word of command is invalid 24.7%
3. FIND command with invalid index name 11.3%
4. DISPLAY command contains invalid word 3.5%
5. Valid command at an inappropriate time 3.1%
6. Max. # of ports to a Z39 db are in use 3.1%
7. PS command - no previous screen 3.1%
8. DATE search with unrecognized word 2.3%
9. Search term missing from search command 1.5%
10. DISPLAY command - no FIND results 1.3%
11. All others 11.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.5%
2. FIND 13.3%
3. INDEXES 8.2%
4. LOCATE (BIO DB) 7.0%
5. COMMANDS 5.1%
6. MAIL 4.4%
7. BIOSIS DATABASE 3.2%
8. DISPLAY 3.2%
9. Unrecognized term 3.2%
10. BIOSIS BACKFILES 2.5%
11. All others 28.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.0%
2. First word of command is invalid 15.9%
3. FIND command with invalid index name 11.8%
4. FIND command with zero results 8.9%
5. 117 4.1%
6. FIND command retrieves >1 book 4.1%
7. DISPLAY command - middle of >1 screen 3.5%
8. DISPLAY command-complete in one screen 2.9%
9. DISPLAY command - last of >1 screen 2.9%
10. 3 HELP commands issued from same code 2.2%
11. All others 22.6%
Ten most frequent SHOW requests:
1. HISTORY 52.6%
2. SEARCH 26.3%
3. PUBLICATION TYPES 5.3%
4. STOPWORDS 5.3%
5. GLOSSARY 5.3%
6. MAIL STATUS 5.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)