MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/02/01 through 06/08/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 64 290 354
Davis 209 9 218
Irvine 34 0 34
Los Angeles 0 62 62
Riverside 19 16 35
San Diego 16 54 70
San Francisco 46 0 46
Santa Barbara 4 22 26
Santa Cruz 2 25 27
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 12 12
Los Alamos 0 0 0
Other - UC 0 28 28
Other-Network UC n/a 292 292
_______ ______ _____
394 812 1,206
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,055 3,375 39,640
BIO88 151 316 1,966
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 21 267
2-4 a.m. 7 49 135
4-6 a.m. 15 30 128
6-8 a.m. 23 89 1,516
8-10 a.m. 131 436 2,864
10-12 a.m. 244 737 6,766
12-2 p.m. 228 751 13,786
2-4 p.m. 223 593 5,706
4-6 p.m. 184 515 4,605
6-8 p.m. 63 215 3,205
8-10 p.m. 48 193 2,111
10-12 p.m. 30 62 517
__________ __________ __________ _________________
Total: 1,206 3,691 41,606
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 188 804 992
Davis 790 14 804
Irvine 95 0 95
Los Angeles 0 180 180
Riverside 53 38 91
San Diego 85 160 245
San Francisco 161 0 161
Santa Barbara 6 99 105
Santa Cruz 0 101 101
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 45 45
Los Alamos 0 0 0
Other - UC 0 105 105
Other-Network UC n/a 765 765
_______ ______ _____
1,378 2,313 3,691
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,601 8,102 11,703
Davis 12,122 93 12,215
Irvine 2,102 0 2,102
Los Angeles 0 1,882 1,882
Riverside 396 280 676
San Diego 303 1,793 2,096
San Francisco 2,448 0 2,448
Santa Barbara 48 1,135 1,183
Santa Cruz 0 714 714
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 278 278
Los Alamos 0 0 0
Other - UC 0 1,114 1,114
Other-Network UC n/a 5,195 5,195
_______ ______ _____
21,020 20,586 41,606
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 7.2
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) 8:34
Average session length (minutes:seconds) 13:24
Longest session recorded (minutes:seconds) 240:00
Average number of searches completed per session 3.0
Retrievals per search - median 10.0
Retrievals per search - average 2427.6
Retrievals per search - standard deviation 15537
Percent of searches completed with 0 results 22.5%
Percent of searches entered that are long 1.2%
Percent of long searches completed
(includes partial results) 69.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,174 30.1%
DISPLAY (excluding automatic displays) 4,083 38.7%
BROWSE 4 0.0%
HELP 56 0.5%
EXPLAIN 78 0.7%
SET/RESET 577 5.5%
SHOW 69 0.7%
ADD ON (AND, OR, AND NOT) 517 4.9%
LOGON or LOGOFF 1,378 13.1%
COMMENT 0 0.0%
SAVE 256 2.4%
USE 5 0.0%
OTHER 344 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 1,228 34.9% 263 21.4% 21 217.5 2138.5
TITLE WORD 523 14.9% 222 42.4% 9 662.5 6166.9
EXACT TITLE 13 0.4% 6 46.2% 4 35.9 80.2
KEYWORD 1,255 35.6% 230 18.3% 30 1483.4 15905.8
JOURNAL 132 3.7% 57 43.2% 493 7661.8 26156.6
EXACT JOURNAL 26 0.7% 8 30.8% 279 943.6 2470.0
SOURCE 1 0.0% 1 100% 0 0.0 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 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 1 0.0% 1 100% 0 0.0 0.0
DATE 21 0.6% 4 19.0% 3 51.1 160.8
LANGUAGE 1 0.0% 0 0.0% 7 7.0 0.0
ADDED 2 0.1% 1 50.0% 25 25.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 21 0.6% 2 9.5% 197 2920.5 7792.1
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 167 4.7% 36 21.6% 5 26.9 77.9
EXACT PE 29 0.8% 2 6.9% 3 10.7 16.8
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 101 2.9% 19 18.8% 13 587.3 2614.9
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 343 10.9% 107 31.2% 5 40.9 154.9
Single 2,812 89.1% 629 22.4% 29 1195.9 12319.7
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 4 100% 2 50.0% 15 14.5 10.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 83.9%
LONG 1.7%
TAGS 0.0%
FIELDS 3.6%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 38.7%
2. First word of command is invalid 25.9%
3. FIND command with invalid index name 9.1%
4. PS command - no previous screen 3.6%
5. DISPLAY command contains invalid word 3.4%
6. Search term missing from search command 2.4%
7. DATE search with unrecognized word 1.6%
8. Max. # of ports to a Z39 db are in use 1.4%
9. Valid command at an inappropriate time 1.3%
10. DISPLAY command-record numbers too large 1.2%
11. All others 11.4%
Ten most frequent EXPLAIN requests:
1. FIND 16.7%
2. GUIDE 12.8%
3. INDEXES 10.3%
4. Unrecognized term 7.7%
5. BIOSIS DATABASE 6.4%
6. LOCATE (BIO DB) 6.4%
7. COMMANDS 5.1%
8. CONCEPT CODES 3.8%
9. BIOSYSTEMATIC CODE 2.6%
10. B925 2.6%
11. All others 25.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.9%
2. First word of command is invalid 11.2%
3. DISPLAY command-first of >1 screen 8.2%
4. FIND command with invalid index name 6.0%
5. FIND command retrieves >1 book 4.5%
6. DISPLAY command-complete in one screen 4.5%
7. FIND command with zero results 3.7%
8. DISPLAY command - middle of >1 screen 3.7%
9. DISPLAY command - last of >1 screen 3.0%
10. Multi-index search with zero results 3.0%
11. All others 22.4%
Ten most frequent SHOW requests:
1. HISTORY 71.9%
2. BIOSIS NEWS 9.4%
3. B902 6.3%
4. STOPWORDS 3.1%
5. DISEASE INDEX 3.1%
6. SEARCH 3.1%
7. MAIL STATUS 3.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)