MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 07/01/00 through 07/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 490 1,335 1,825
Davis 839 69 908
Irvine 170 0 170
Los Angeles 160 298 458
Riverside 136 251 387
San Diego 62 294 356
San Francisco 361 0 361
Santa Barbara 63 177 240
Santa Cruz 65 182 247
Lawrence Berkeley 0 51 51
Lawrence Livermore 0 43 43
Los Alamos 0 0 0
Other - UC 29 93 122
Other-Network UC n/a 1,539 1,539
_______ ______ _____
2,375 4,332 6,707
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 5,938 18,470 180,337
BIO88 769 1,771 13,540
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 79 291 2,885
2-4 a.m. 36 156 1,193
4-6 a.m. 66 344 4,735
6-8 a.m. 137 480 3,731
8-10 a.m. 621 1,659 14,585
10-12 a.m. 1,353 3,663 29,612
12-2 p.m. 1,152 3,588 34,525
2-4 p.m. 1,407 4,242 34,913
4-6 p.m. 1,103 3,378 42,301
6-8 p.m. 392 1,333 14,175
8-10 p.m. 188 523 5,643
10-12 p.m. 173 584 5,579
__________ __________ __________ _________________
Total: 6,707 20,241 193,877
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 1,762 4,357 6,119
Davis 2,756 212 2,968
Irvine 568 0 568
Los Angeles 421 762 1,183
Riverside 522 680 1,202
San Diego 155 721 876
San Francisco 1,180 0 1,180
Santa Barbara 210 695 905
Santa Cruz 191 577 768
Lawrence Berkeley 0 112 112
Lawrence Livermore 0 113 113
Los Alamos 0 0 0
Other - UC 43 357 400
Other-Network UC n/a 3,847 3,847
_______ ______ _____
7,808 12,433 20,241
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,226 42,057 59,283
Davis 26,587 1,415 28,002
Irvine 5,164 0 5,164
Los Angeles 3,546 16,064 19,610
Riverside 2,674 10,753 13,427
San Diego 1,412 6,846 8,258
San Francisco 5,822 0 5,822
Santa Barbara 1,271 5,720 6,991
Santa Cruz 714 5,530 6,244
Lawrence Berkeley 0 632 632
Lawrence Livermore 0 2,888 2,888
Los Alamos 0 0 0
Other - UC 2,124 2,780 4,904
Other-Network UC n/a 32,652 32,652
_______ ______ _____
66,540 127,337 193,877
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.6
Standard deviation in seconds 7.3
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
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Median session length (minutes:seconds) 8:36
Average session length (minutes:seconds) 14:09
Longest session recorded (minutes:seconds) 409:26
Average number of searches completed per session 3.0
Retrievals per search - median 9.0
Retrievals per search - average 1063.1
Retrievals per search - standard deviation 14373
Percent of searches completed with 0 results 23.4%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 50.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 17,791 31.1%
DISPLAY (excluding automatic displays) 20,697 36.2%
BROWSE 2 0.0%
HELP 781 1.4%
EXPLAIN 747 1.3%
SET/RESET 3,174 5.6%
SHOW 180 0.3%
ADD ON (AND, OR, AND NOT) 2,450 4.3%
LOGON or LOGOFF 7,595 13.3%
COMMENT 0 0.0%
SAVE 1,742 3.0%
USE 16 0.0%
OTHER 1,988 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 6,991 36.0% 1,359 19.4% 22 142.3 592.3
TITLE WORD 3,322 17.1% 1,311 39.5% 8 393.6 2989.9
EXACT TITLE 121 0.6% 76 62.8% 4 64.0 315.4
KEYWORD 6,481 33.3% 1,138 17.6% 37 2370.9 23932.8
JOURNAL 844 4.3% 334 39.6% 703 8547.0 28288.4
EXACT JOURNAL 240 1.2% 85 35.4% 851 2958.1 6000.2
SOURCE 21 0.1% 14 66.7% 9 45.9 93.7
CONFERENCE 3 0.0% 1 33.3% 3,127 3127.0 4163.4
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 3 0.0% 0 0.0% 237 159.3 134.5
MAJ CONCEPT CDES 2 0.0% 0 0.0% 20,945 20945.0 25214.0
CONCEPT CODES 4 0.0% 1 25.0% 6,118 17530.7 25238.7
PUBLICATION TYPE 18 0.1% 4 22.2% 3 469.0 1734.1
DATE 129 0.7% 16 12.4% 15 363.4 643.3
LANGUAGE 8 0.0% 1 12.5% 77 69.0 60.4
ADDED 8 0.0% 0 0.0% 14 15.4 11.7
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 62 0.3% 7 11.3% 19 1191.7 5271.4
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 6 0.0% 3 50.0% 984 5104.7 7361.8
ISBN 2 0.0% 1 50.0% 27 27.0 0.0
PERIODICAL 561 2.9% 118 21.0% 4 85.5 682.6
EXACT PE 72 0.4% 9 12.5% 3 35.2 157.9
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 535 2.8% 66 12.3% 16 840.0 6031.4
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 1,749 9.9% 497 28.4% 7 212.6 1221.1
Single 15,851 90.1% 3,526 22.2% 30 1558.8 16974.7
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 2 100% 0 0.0% 8 8.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 87.0%
LONG 1.7%
TAGS 0.4%
FIELDS 2.0%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.0%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 34.0%
2. First word of command is invalid 30.5%
3. FIND command with invalid index name 10.1%
4. DISPLAY command contains invalid word 3.7%
5. PS command - no previous screen 3.0%
6. Search term missing from search command 2.1%
7. Valid command at an inappropriate time 1.7%
8. Index invalid in current database 1.3%
9. DATE search with unrecognized word 1.3%
10. DISPLAY command - no FIND results 0.9%
11. All others 11.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 18.6%
2. LOCATE (BIO DB) 17.0%
3. FIND 9.2%
4. INDEXES 5.9%
5. Unrecognized term 5.5%
6. COMMANDS 5.2%
7. BIOSIS DATABASE 5.0%
8. DISPLAY 3.2%
9. DATABASES 3.1%
10. ADDON SEARCH 2.8%
11. All others 24.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.4%
2. First word of command is invalid 15.8%
3. FIND command with invalid index name 9.1%
4. DISPLAY command-first of >1 screen 6.2%
5. DISPLAY command - middle of >1 screen 5.7%
6. FIND command retrieves >1 book 5.6%
7. FIND command with zero results 5.2%
8. NS command - no next screen 3.9%
9. DISPLAY command - last of >1 screen 3.1%
10. DISPLAY command-complete in one screen 2.9%
11. All others 20.0%
Ten most frequent SHOW requests:
1. HISTORY 52.4%
2. SEARCH 18.7%
3. MAIL STATUS 9.0%
4. BIOSIS NEWS 4.2%
5. GLOSSARY 4.2%
6. SYSTEM NEWS 1.8%
7. PUBLICATION TYPES 1.2%
8. B902 1.2%
9. GLOSSARY A 1.2%
10. DATABASES 1.2%
11. All others 4.8%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)