MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/01/00 through 05/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,025 1,716 2,741
Davis 1,208 98 1,306
Irvine 296 0 296
Los Angeles 365 274 639
Riverside 274 241 515
San Diego 122 264 386
San Francisco 316 0 316
Santa Barbara 171 212 383
Santa Cruz 483 409 892
Lawrence Berkeley 0 64 64
Lawrence Livermore 0 55 55
Los Alamos 0 0 0
Other - UC 35 180 215
Other-Network UC n/a 1,670 1,670
_______ ______ _____
4,295 5,183 9,478
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 8,429 27,718 273,181
BIO88 1,049 2,471 17,323
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 100 330 3,442
2-4 a.m. 61 190 2,235
4-6 a.m. 39 121 1,455
6-8 a.m. 179 532 9,356
8-10 a.m. 967 2,929 31,283
10-12 a.m. 1,857 5,361 43,660
12-2 p.m. 1,640 5,073 50,796
2-4 p.m. 1,978 6,099 54,007
4-6 p.m. 1,359 4,426 42,360
6-8 p.m. 597 2,232 21,352
8-10 p.m. 433 1,719 18,346
10-12 p.m. 268 1,177 12,212
__________ __________ __________ _________________
Total: 9,478 30,189 290,504
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 4,265 5,643 9,908
Davis 4,132 324 4,456
Irvine 1,070 0 1,070
Los Angeles 829 789 1,618
Riverside 943 618 1,561
San Diego 324 631 955
San Francisco 1,016 0 1,016
Santa Barbara 714 899 1,613
Santa Cruz 1,740 1,241 2,981
Lawrence Berkeley 0 237 237
Lawrence Livermore 0 129 129
Los Alamos 0 0 0
Other - UC 60 618 678
Other-Network UC n/a 3,967 3,967
_______ ______ _____
15,093 15,096 30,189
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 43,057 66,522 109,579
Davis 41,545 2,487 44,032
Irvine 10,692 0 10,692
Los Angeles 8,116 6,787 14,903
Riverside 9,970 5,661 15,631
San Diego 1,873 6,967 8,840
San Francisco 5,749 0 5,749
Santa Barbara 5,872 11,367 17,239
Santa Cruz 11,508 9,941 21,449
Lawrence Berkeley 0 1,198 1,198
Lawrence Livermore 0 885 885
Los Alamos 0 0 0
Other - UC 1,682 5,505 7,187
Other-Network UC n/a 33,120 33,120
_______ ______ _____
140,064 150,440 290,504
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.5
Standard deviation in seconds 6.5
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
_________________________________________
Median session length (minutes:seconds) 8:22
Average session length (minutes:seconds) 13:35
Longest session recorded (minutes:seconds) 854:39
Average number of searches completed per session 3.2
Retrievals per search - median 10.0
Retrievals per search - average 908.3
Retrievals per search - standard deviation 10014
Percent of searches completed with 0 results 22.9%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 53.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 26,895 30.7%
DISPLAY (excluding automatic displays) 32,352 37.0%
BROWSE 4 0.0%
HELP 1,295 1.5%
EXPLAIN 1,335 1.5%
SET/RESET 4,071 4.7%
SHOW 364 0.4%
ADD ON (AND, OR, AND NOT) 3,294 3.8%
LOGON or LOGOFF 11,532 13.2%
COMMENT 2 0.0%
SAVE 3,109 3.6%
USE 22 0.0%
OTHER 3,269 3.7%
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 8,650 29.5% 1,646 19.0% 21 129.7 488.6
TITLE WORD 4,873 16.6% 1,778 36.5% 8 645.2 6552.6
EXACT TITLE 217 0.7% 112 51.6% 2 134.0 405.6
KEYWORD 11,618 39.6% 2,050 17.6% 35 1739.9 13754.7
JOURNAL 1,420 4.8% 590 41.5% 616 4815.8 16911.9
EXACT JOURNAL 502 1.7% 183 36.5% 712 4831.4 38643.8
SOURCE 25 0.1% 15 60.0% 45 408.1 1113.7
CONFERENCE 12 0.0% 8 66.7% 146 374.8 500.5
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% 2 28.6% 54 59.2 59.0
MAJ CONCEPT CDES 2 0.0% 0 0.0% 5,780 5780.0 7611.3
CONCEPT CODES 1 0.0% 0 0.0% 8 8.0 0.0
PUBLICATION TYPE 7 0.0% 2 28.6% 12 18.6 26.6
DATE 172 0.6% 43 25.0% 16 228.9 602.5
LANGUAGE 18 0.1% 0 0.0% 63 196.9 294.7
ADDED 5 0.0% 1 20.0% 28 28.8 11.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 157 0.5% 41 26.1% 13 292.4 1472.2
ACCESSION NO. 3 0.0% 3 100% 0 0.0 0.0
ISSN 7 0.0% 6 85.7% 60 60.0 0.0
ISBN 2 0.0% 2 100% 0 0.0 0.0
PERIODICAL 746 2.5% 146 19.6% 5 208.3 1734.3
EXACT PE 139 0.5% 21 15.1% 3 45.5 192.8
RPE 1 0.0% 0 0.0% 6 6.0 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 720 2.5% 116 16.1% 22 2844.8 22198.6
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 2,537 9.5% 727 28.7% 7 194.7 1782.9
Single 24,099 90.5% 5,279 21.9% 31 1398.9 12561.4
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% 7 6.5 0.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 88.9%
LONG 1.1%
TAGS 0.3%
FIELDS 1.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.3%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.9%
Ten most frequent errors:
1. NS command - no next screen 34.4%
2. First word of command is invalid 30.2%
3. FIND command with invalid index name 10.3%
4. PS command - no previous screen 4.2%
5. DISPLAY command contains invalid word 3.1%
6. Search term missing from search command 1.8%
7. Valid command at an inappropriate time 1.8%
8. DATE search with unrecognized word 1.4%
9. Index invalid in current database 1.4%
10. Command contains escape or arrow key 1.0%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 20.4%
2. GUIDE 19.9%
3. FIND 8.8%
4. COMMANDS 7.2%
5. INDEXES 5.4%
6. Unrecognized term 4.5%
7. ADDON SEARCH 3.4%
8. BIOSIS DATABASE 3.1%
9. DISPLAY 2.4%
10. MAIL 2.2%
11. All others 22.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.2%
2. First word of command is invalid 14.5%
3. FIND command with invalid index name 10.1%
4. DISPLAY command-first of >1 screen 7.0%
5. DISPLAY command - middle of >1 screen 5.8%
6. FIND command with zero results 5.1%
7. FIND command retrieves >1 book 4.7%
8. DISPLAY command-complete in one screen 3.7%
9. NS command - no next screen 2.8%
10. DISPLAY command - last of >1 screen 2.3%
11. All others 21.8%
Ten most frequent SHOW requests:
1. HISTORY 46.0%
2. SEARCH 28.0%
3. MAIL STATUS 8.1%
4. BIOSIS NEWS 4.0%
5. SETTINGS 3.2%
6. GLOSSARY 2.0%
7. B902 1.4%
8. TAXONOMIC GUIDE 1.2%
9. BIOSYSTEMATIC CODES 1.2%
10. SYSTEM NEWS 0.9%
11. All others 4.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)