MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/21/01 through 04/27/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 182 282 464
Davis 210 2 212
Irvine 18 0 18
Los Angeles 0 58 58
Riverside 18 35 53
San Diego 37 52 89
San Francisco 35 0 35
Santa Barbara 2 25 27
Santa Cruz 11 46 57
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 19 19
Los Alamos 0 0 0
Other - UC 0 38 38
Other-Network UC n/a 330 330
_______ ______ _____
513 887 1,400
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,285 4,058 72,072
BIO88 115 266 8,983
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 24 172
2-4 a.m. 7 23 329
4-6 a.m. 23 75 508
6-8 a.m. 23 83 723
8-10 a.m. 125 476 4,103
10-12 a.m. 227 626 12,884
12-2 p.m. 246 677 5,926
2-4 p.m. 303 926 24,178
4-6 p.m. 229 704 25,180
6-8 p.m. 85 319 4,362
8-10 p.m. 85 271 1,847
10-12 p.m. 40 120 843
__________ __________ __________ _________________
Total: 1,400 4,324 81,055
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 555 922 1,477
Davis 758 3 761
Irvine 47 0 47
Los Angeles 0 162 162
Riverside 96 98 194
San Diego 123 129 252
San Francisco 177 0 177
Santa Barbara 6 62 68
Santa Cruz 15 135 150
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 29 29
Los Alamos 0 0 0
Other - UC 0 72 72
Other-Network UC n/a 934 934
_______ ______ _____
1,777 2,547 4,324
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,770 8,891 14,661
Davis 43,594 0 43,594
Irvine 371 0 371
Los Angeles 0 1,235 1,235
Riverside 704 890 1,594
San Diego 959 880 1,839
San Francisco 818 0 818
Santa Barbara 53 332 385
Santa Cruz 81 1,154 1,235
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 98 98
Los Alamos 0 0 0
Other - UC 0 1,022 1,022
Other-Network UC n/a 14,203 14,203
_______ ______ _____
52,350 28,705 81,055
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 3.2
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) 8:24
Average session length (minutes:seconds) 12:52
Longest session recorded (minutes:seconds) 504:21
Average number of searches completed per session 3.1
Retrievals per search - median 11.0
Retrievals per search - average 1116.6
Retrievals per search - standard deviation 10293
Percent of searches completed with 0 results 22.0%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 65.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,783 31.6%
DISPLAY (excluding automatic displays) 4,301 35.9%
BROWSE 4 0.0%
HELP 200 1.7%
EXPLAIN 186 1.6%
SET/RESET 644 5.4%
SHOW 40 0.3%
ADD ON (AND, OR, AND NOT) 541 4.5%
LOGON or LOGOFF 1,632 13.6%
COMMENT 0 0.0%
SAVE 194 1.6%
USE 4 0.0%
OTHER 450 3.8%
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 1,239 30.1% 239 19.3% 23 192.4 901.3
TITLE WORD 668 16.2% 257 38.5% 9 431.7 1993.4
EXACT TITLE 21 0.5% 11 52.4% 1 68.7 207.1
KEYWORD 1,552 37.7% 275 17.7% 32 2330.5 18114.5
JOURNAL 151 3.7% 55 36.4% 477 5329.5 12483.0
EXACT JOURNAL 81 2.0% 25 30.9% 746 4196.1 8223.2
SOURCE 1 0.0% 0 0.0% 31 31.0 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 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 4 0.1% 0 0.0% 11 11.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 8 0.2% 0 0.0% 1,586 1734.5 1578.6
LANGUAGE 1 0.0% 0 0.0% 64 64.0 0.0
ADDED 2 0.0% 1 50.0% 22 22.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 46 1.1% 8 17.4% 26 1235.4 5359.8
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 165 4.0% 32 19.4% 4 22.9 65.8
EXACT PE 30 0.7% 1 3.3% 5 11.3 15.0
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 148 3.6% 28 18.9% 135 1904.7 3608.8
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 9.1% 100 29.2% 7 414.6 1532.5
Single 3,415 90.9% 729 21.3% 31 1557.9 12885.9
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% 3 75.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 83.4%
LONG 1.5%
TAGS 0.5%
FIELDS 3.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.4%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.6%
Ten most frequent errors:
1. First word of command is invalid 31.8%
2. NS command - no next screen 28.9%
3. FIND command with invalid index name 11.2%
4. PS command - no previous screen 4.9%
5. DISPLAY command contains invalid word 3.8%
6. Search term missing from search command 2.8%
7. Index invalid in current database 1.4%
8. Valid command at an inappropriate time 1.3%
9. NS of SHOW/EXP command-no next screen 1.1%
10. DISPLAY command - no FIND results 1.0%
11. All others 11.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 24.7%
2. GUIDE 20.4%
3. FIND 10.2%
4. COMMANDS 8.1%
5. INDEXES 7.0%
6. BIOSIS DATABASE 4.8%
7. ADDON SEARCH 3.8%
8. Unrecognized term 3.2%
9. BIOSIS NEWS 2.2%
10. LOCATIONS 2.2%
11. All others 13.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.5%
2. First word of command is invalid 14.5%
3. FIND command with invalid index name 11.7%
4. DISPLAY command-first of >1 screen 8.8%
5. FIND command retrieves >1 book 6.2%
6. DISPLAY command-complete in one screen 4.7%
7. FIND command with zero results 3.9%
8. DISPLAY command - middle of >1 screen 3.9%
9. DISPLAY command - last of >1 screen 3.6%
10. NS command - no next screen 2.1%
11. All others 13.2%
Ten most frequent SHOW requests:
1. HISTORY 64.0%
2. SEARCH 20.0%
3. PUBLICATION TYPES 4.0%
4. BIBLIOGRAPHIC SOFTWARE 4.0%
5. GLOSSARY 4.0%
6. MAIL STATUS 4.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)