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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:7 }6 y) U* A& B
to do-business + [; n* \" }1 c
rt random 360, G6 l; P+ w. C/ w4 ~) i5 Q
fd 1
; i: P2 ~: B! U2 w" C$ p+ d ifelse(other turtles-here != nobody)[# i: n- e, s8 A4 e# M: b
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
, Y1 b' l! U" x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( E# a8 O& \; c6 y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 C+ D( j8 b( \. m- a/ R+ Q
   set [trade-record-one-len] of self length [trade-record-one] of self
0 {  x! |/ O. @  H& g0 i/ J% J   set trade-record-current( list (timer) (random money-upper-limit))
6 z# }' U& V: B# C& Q$ Y
, @2 H+ I* H3 a/ j+ ^问题的提示如下:* j% d! R) `$ e4 N6 ^& K4 T

  F* c- e- o4 x2 U, derror while turtle 50 running OF in procedure DO-BUSINESS
+ o* a: ~. n* G% N$ h+ z' ~  called by procedure GO
0 A/ Q+ [: @& m5 @; ^& C+ zOF expected input to be a turtle agentset or turtle but got NOBODY instead.
& {' q  C* S; t- |, M7 }1 k
(halted running of go)6 _1 Z+ t8 p8 H0 w3 L6 r2 p
1 B8 q7 j" G% Z
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
0 l1 p( ?( O6 e0 V另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教: E; v: Q# r6 a3 @6 J/ z
globals[! P, q7 K. {  F
xmax4 y" q  }5 w5 W$ t; i' R8 y
ymax* l! i7 b- E! a
global-reputation-list- l; s; m/ k1 j6 x7 c

+ R, w" T5 t8 f! h;;
每一个turtle的全局声誉都存在此LIST  F) n' t  O* F0 V
credibility-list" I, {' u! h% K
;;
每一个turtle的评价可信度
* A8 t' w& h; b+ |' C6 u/ e1 s/ dhonest-service5 |, e6 p0 P, P% o0 z# ~
unhonest-service- A9 @) s8 c& E: s+ ^  H6 z* B
oscillation
9 `1 D" ]: L% Y7 a! l2 lrand-dynamic8 L, T. R: I4 g! @) v9 s( B2 ^% t
]
" C5 X6 h: {6 D6 M, ~5 X
8 s3 i8 G" U* l6 nturtles-own[0 W) ~% d5 c6 y3 _" b
trade-record-all3 @( i" D' w# l( v
;;a list of lists,
trade-record-one组成* b$ `+ v6 T# d. O" U
trade-record-one
3 w, Z+ k! k# G1 w;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: X! ?7 D) f/ e7 w. _( n. l/ o: j7 T$ Q4 }- C; S2 J
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
1 i/ m( y) [/ \# F6 Ytrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]( B: m3 s$ E+ M) A/ j) I6 k
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
; H* {) P7 C8 N- g, zneighbor-total
& d4 K3 q. y8 @# m$ @- a( |3 u) P5 k;;
记录该turtle的邻居节点的数目
0 v5 P1 Y2 ], g- |8 A/ c6 W6 Btrade-time
# [/ y/ w; a5 w1 e7 g% _* G& R;;
当前发生交易的turtle的交易时间
4 U* B( s9 x+ \1 kappraise-give1 `; d6 K2 q) Z4 c- Q7 W
;;
当前发生交易时给出的评价
. ^- A/ f( c4 j. I, H6 Q# l# nappraise-receive, t5 j% A" |! M  X+ {0 T
;;
当前发生交易时收到的评价8 e0 D6 K+ g4 {7 j  t
appraise-time+ `& ^& o# A7 \+ h; R$ ^  S  n
;;
当前发生交易时的评价时间) @2 \% X" P2 h9 `/ U2 t/ O* {
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* u, |/ k1 @/ X
trade-times-total
% U* k4 b8 }6 |& }- ?;;
与当前turtle的交易总次数+ c/ u( q9 Z" ?1 Q7 V2 b0 M
trade-money-total: j7 i& C* j. w6 u2 R9 h
;;
与当前turtle的交易总金额: f; {( Q! Y$ @0 }- q/ M+ u3 B# P
local-reputation
3 ~% D% H; @! ?- H+ {, i9 ?global-reputation
3 o( a4 F6 O- V" @9 D; mcredibility
5 S- x/ \7 d0 ]7 [) {;;
评价可信度,每次交易后都需要更新. k4 @$ `) B1 I' J5 A7 ?
credibility-all% a" ], J: P  f: q
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据3 W* Z0 O+ [, p

, A) q4 q2 v" L3 a& Y4 e( o2 O* |;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
: p) g/ i) ~! B& S7 c9 X* wcredibility-one6 S+ U9 S. P% N
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
- A0 a8 ?. A9 {* Y% qglobal-proportion
/ o7 o" J6 m# @3 fcustomer
9 ~9 Y2 x/ y# x! lcustomer-no9 p1 J: t$ @! [
trust-ok+ w" _/ m( H" J  ]5 M
trade-record-one-len;;trade-record-one的长度
  g: Z6 _: m! e7 V]
7 c' k. \: b0 Q1 O( `
3 H4 t. E  S( j' ?5 s" P: P;;setup procedure/ i: ]9 n# M3 I

% z; [: o1 b0 y5 {; }% F4 {; mto setup( K& v/ u% X8 U. I# Q  ]4 T

/ u  v" x3 ]- }+ Wca

; o4 ^7 X$ P5 V4 R
4 w# ~: R! m4 A, v8 ^) w% oinitialize-settings
+ x5 Q& n- m0 E2 L* n

. |& b" r9 e' o2 Vcrt people [setup-turtles]

  C* }; Q8 T% b) X# w, D  N( t6 Q4 d8 T( J  L1 M! D
reset-timer

7 W- H  p6 h8 n% b% G- w8 \4 \5 |: o1 d, O  d6 d
poll-class

1 a- S0 m9 `# @! k* f' y6 D5 O
" q2 b1 b! ]$ q: r" rsetup-plots
+ I3 t- @# G" a/ ], @+ I# v1 k
2 t( J- v- P: V& P6 B' ^( U! @/ H3 b# D
do-plots

6 Y3 u% w5 ^5 l# @end$ _8 {4 b3 U( ]' w; D
0 [/ ^* p4 C+ Y' k
to initialize-settings* G3 N9 o$ A& U, P. x, r, f

- a8 a: q. W; J/ B! Xset global-reputation-list []
3 `+ [, S( R) I1 p& y' d. j
& A4 n' h  s  n2 E/ i
set credibility-list n-values people [0.5]

# M. {3 V# p3 T  x7 n3 `9 T+ j' {1 G( T
set honest-service 0

4 K/ O9 S0 F8 Z' ]8 `
6 D$ \% ^% ^7 U! T1 Z! {set unhonest-service 0

/ ^; L3 H2 R, }6 Z/ l& G' M! o9 B1 e  N6 U$ l4 ~3 {. G
set oscillation 0
/ d; O- z* T5 j3 m
! Z$ {. D+ D$ n7 d. z
set rand-dynamic 0
' U7 e; h3 {4 r+ ?( W  n& d
end* C& T  a9 e1 q" b9 p

% R4 \3 v; b! V2 c3 pto setup-turtles
2 a. E' i6 K& X( e, zset shape "person"
" ^9 Y9 K% }3 n# F6 Rsetxy random-xcor random-ycor
6 f/ P6 g% X) k1 a; Xset trade-record-one []2 k+ r6 i; ~* ~- k; ]5 @, I# K9 G

  g( n! f' j, ^0 s# \! X2 Dset trade-record-all n-values people [(list (? + 1) 0 0)] - x- v. {1 A  l- W  p# v: J0 E

4 I$ `' Z, U. B$ A( J6 Y" l0 J6 Z- [set trade-record-current []0 W7 m# h2 \! _/ ~$ Z9 A
set credibility-receive []
# \, C" y  Z( H% `& D' vset local-reputation 0.5
* r$ ]  _- v% u- _1 Lset neighbor-total 0( ]" d6 X# |, E
set trade-times-total 0
$ x1 \$ @6 T4 \& b9 ^, b  s) }: {set trade-money-total 0) _! T9 S/ g& |9 G
set customer nobody
0 T/ e& U8 D8 p5 Cset credibility-all n-values people [creat-credibility]
7 B( `# k+ g' T) @set credibility n-values people [-1]7 h/ \0 X& i6 X; ]
get-color
; Y( v2 f" W. U, q) R
! C4 Q/ X& |3 n( ~# i: {9 a
end9 l9 \' I1 y& }; l# x. D
* L. ~( k9 I) `$ A0 g
to-report creat-credibility
) n3 m% n  l6 _+ q, O( c5 Greport n-values people [0.5]
5 p- n% n0 I* `4 U* P% W3 ?' G9 uend' r( J  v/ c% x$ m

5 \( C& _& A7 z" T! p) x0 U- yto setup-plots8 x- o+ w+ Q( J9 X# S$ [

% l) v" G2 m* I# p4 Eset xmax 30
8 {* q  ?& n- d( x6 V& f

4 B5 B4 ]6 ^1 c! J; o  |! Z& L% \set ymax 1.0

2 u; p/ r4 N# p9 ^* h& z1 _3 t/ L) x8 Q3 p: \8 n- y% _; |& I( f
clear-all-plots
9 K* ?' s2 @3 D: S- j/ v; Q

1 o. X, R% Q% ysetup-plot1
( y8 M$ J: l) N! X7 N2 W
1 z9 |0 {/ v+ C
setup-plot2
) \4 G! i; r5 k! }2 ^- v$ A

* g" s3 k. T% S  a0 vsetup-plot3

3 N, F+ `0 A5 Wend  L* P& G  T9 W- ~& p4 u% B
( G" V" y6 s$ H; A
;;run time procedures! _7 R( ^$ J) Z" U. `4 [& u6 i$ n. b, n
4 Y! ?( G. o' h  o, z0 [
to go
. j. k7 A  r8 v+ b! F8 K/ U( U! F8 a  v# F
ask turtles [do-business]
0 X+ @5 `$ p4 H
end
% W. N1 K, t5 M, ]6 C( h
) Y% ]/ T, J$ Z9 mto do-business
6 M" [) g! G$ z6 B( h
6 ~/ Q6 Y, N2 o3 A/ y4 ~! i
2 o( W/ m  \# r; j: I
rt random 360

8 j2 G7 O- ?( V  ^5 T  B9 I# O& ^$ b# @) I5 Z0 J4 m
fd 1
) C" H: Q+ J& E1 g# H

* |: l1 I. |9 e: g6 B- l8 v2 G: H7 Zifelse(other turtles-here != nobody)[

2 s7 K" [! `8 D5 ~1 a8 Q( x
: f5 {+ M* Y$ `' M' V; P, e6 tset customer one-of other turtles-here
5 f- Q4 W, E" r. X7 l

1 h2 S& `) F) U5 u' X; n;; set [customer] of customer myself

4 X& v, ^2 S9 M  [) Q4 ]( l0 S
9 R/ g8 t3 u: O* f2 o- }, d6 V0 gset [trade-record-one] of self item (([who] of customer) - 1)
0 P9 s8 Y* Z8 `[trade-record-all]of self
' I# L% ^8 w" ^- \2 q. x" l; S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 [2 j' o0 \' Q8 e6 k

* X$ L3 d% q, T) a% A' l3 }set [trade-record-one] of customer item (([who] of self) - 1)
  H' |7 x* C1 E2 y/ n! G[trade-record-all]of customer
7 J, H+ n9 m. b: F# b( w# D  y) x. ?

; r% b; [; @+ z2 O6 T& n) x/ Jset [trade-record-one-len] of self length [trade-record-one] of self

' ^, o3 |% f; }* C6 m7 d/ A" {$ w% ]$ h; e# |+ |5 ]  ?$ S
set trade-record-current( list (timer) (random money-upper-limit))

% O, W8 D2 F3 k: K/ l
, ?" e. p0 O: I' `; P1 o) f; x3 Oask self [do-trust]
  M* N8 H+ }8 d) P! X9 A, };;
先求ij的信任度
4 L. a3 h3 J3 |1 D7 `, o
: O1 v$ A' Y  T: j. ]4 ^( V3 sif ([trust-ok] of self)4 [# ?+ ?, m" ?' D1 c6 n- n2 N
;;
根据ij的信任度来决定是否与j进行交易[
" T, {- `6 }  i/ g6 i( Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ \: J% `$ I; k9 w" i- a$ C. I8 d( u; E
[

5 ]% D. R/ |5 x) I9 ~2 \4 o' d$ o# J* m9 `
do-trade

( V% \& J0 H7 m$ M* h+ ?7 g+ x+ X! `$ O1 ~
update-credibility-ijl
/ F: L, n3 c6 [. K5 J8 e
  P. ?) g8 J) A: c8 |
update-credibility-list
; @2 Z; w4 s( T% b

, a* C  @- m2 S4 n) K, p( L4 d# o( u& h" `) w
update-global-reputation-list
  R  I# [3 r! _+ }( [7 h

1 o1 G- B3 G5 `7 |poll-class

: M+ M3 ^/ W; ~5 M- J7 z% }8 }- V/ Z6 M. a8 B* c2 ^+ W, `' R! X6 w& l9 e
get-color
- p# e4 G6 U+ ^8 u- N% x& d/ w5 W
3 c. l$ t4 Y/ z* p* r$ k7 b0 H
]]
5 c% d" M* p# v; i* Z
0 B8 n; w. r  U# O' _;;
如果所得的信任度满足条件,则进行交易
# R9 P9 v1 e9 V, m
! Q% B/ U& h1 ^& l3 U, y' w[

1 o3 g0 s6 o# O9 D
8 C7 V% u2 T9 W! d8 Art random 360

! X' k0 b' W1 h$ ]7 v1 `; W! A: D
5 o# P6 Q) }/ O( g- p' B- l: Dfd 1

+ h# Y+ Q" k! V& K( I1 b
3 X% F0 i( H6 K" ^7 t; d]
* W$ z& k6 v8 F. p3 B* o
8 L- h8 ~. y" W) h
end

- [" Z$ Z8 M- }5 x) l$ w8 ?5 ]/ ~; }7 k' A) _' Z: M" y
to do-trust , c! w/ U" @7 U" H
set trust-ok False5 q2 b" B  g( Z  z4 F2 E, g

7 _  e% I. T/ O9 P
8 A5 k9 H; b; H; x- f& H
let max-trade-times 0# @' P; X; u% s! h' l3 R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], o$ S% h4 H) c- `5 Z5 V% W
let max-trade-money 0
2 j2 S& V7 \! i3 aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ e( o+ u. I& e% @1 v. Q9 s& ]let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 e0 u  w6 t5 |& D( e) o
  o8 ?; Y: t6 H( e: q  q% X7 l" j

# e& z% u4 z2 e2 o* ?! Z6 tget-global-proportion' U3 V. [9 [& Y! E$ J" K5 l7 f% Q
let trust-value# @2 i# L* ^2 e9 i# [
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
  u, L- W5 m: h$ J  }9 ]; S' u
if(trust-value > trade-trust-value)2 p0 v8 L/ C' ]) V* D" I
[set trust-ok true]' f/ @! i7 F+ E) w# m7 B4 j- l
end4 L7 A  _: c6 ~* i: E  Y! A, e' D

5 j  h0 D3 o+ x$ I: ?to get-global-proportion
4 n0 g) i, T, y6 n3 ~/ f. vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 {. F; M+ g9 F1 N
[set global-proportion 0]
6 O. s! i2 g) d/ j" W[let i 0' X  ], i8 l$ P( Z8 B
let sum-money 0: ~# Z+ J* y8 V
while[ i < people]
- t' ]9 z4 K' r6 ]$ B[* X! U3 `' e" K# c- S6 @* S
if( length (item i
( l8 `, K" m* u[trade-record-all] of customer) > 3 )

, A2 R* R: M  r5 Y% X) o$ h- f[$ Y, T9 ]$ M  U4 z+ z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ a. w# w/ b: H# L]6 p! _- L' l  ~/ R2 i$ k8 z
]
0 {8 I$ p, W* a4 Blet j 0
+ S, `3 _/ Q# i. @: \, ?; Rlet note 06 V, }/ f7 t4 J3 s
while[ j < people]
  ^7 O6 }1 j5 C* Q1 w) h[$ M" H( k9 Q: W
if( length (item i+ y, ~1 U& A. R7 G2 Q% [. e: X
[trade-record-all] of customer) > 3 )
: b5 A5 x+ f8 V1 t! ]
[& E) {4 s( f- c: E7 U! U/ M4 n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 b$ n8 g: o  r0 p  a/ ^, T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, u& g% L2 [. D6 ^[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, X' M8 x0 Z) d8 w& v]
6 d, h( v; S* y]6 C) H' D( B- Y* Q5 k$ z1 W
set global-proportion note; H5 F0 p% Q, x( `
]- v3 ?8 w9 G+ Z* k$ E
end1 ]' \/ D* G) Y
- b! }6 n0 E' h" F1 k6 s
to do-trade
+ u+ [" B* R+ y3 {) s;;
这个过程实际上是给双方作出评价的过程5 P, X! X# d$ ]5 T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 Y+ H# N$ ?5 N9 e5 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ h* [" e* ]" m) uset trade-record-current lput(timer) trade-record-current
" `$ B# R8 }/ w" r# i;;
评价时间
! H. b( K: a, C$ }, a6 R, g/ Aask myself [  S/ o$ ^# C* V. v" w( S1 w7 d
update-local-reputation- _' [, V; v# }2 K/ ]
set trade-record-current lput([local-reputation] of myself) trade-record-current. h/ o- f# ]/ C6 g5 U- x  S* Z
]
, ]+ ]* K2 @9 W8 A% S0 j9 hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 T+ t! e8 X! c, {4 b- @! N5 M;;
将此次交易的记录加入到trade-record-one
- N- \: E0 }7 ~( r2 D( [; Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- ?" z" h5 f! X. a$ g& k" c
let note (item 2 trade-record-current )) X( m4 v7 {  e7 X; f0 c- a7 L
set trade-record-current8 K7 a  X9 p7 \; n) S$ T
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ I, q* Q) K! {  Kset trade-record-current2 P7 R& j) ]( v: a0 R- Y' @
(replace-item 3 trade-record-current note)
9 U0 _4 W' ]* |5 h5 F5 Z9 a' S- h$ Y" c4 G% p

& a5 q% H' `4 p' _4 |ask customer [
7 q+ ?0 M9 h% y8 Iupdate-local-reputation" O  S! E* X1 C! F$ S
set trade-record-current
/ \! }- v+ I) o4 }% y, g6 b6 H4 c- |7 V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# ?- `* t4 S  n  G) _; W( d]
6 j/ l2 O/ a9 r5 }$ F2 a6 U( W( h% O4 C  o
0 r$ D, S: u' o; Z& k
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; x5 |/ W! ?. P4 Z, f5 C

  ]7 i+ A: D2 @5 L* ?. C( }set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ f0 _$ ]  R; u2 T" V: E7 o9 w6 l1 s8 Y
;;
将此次交易的记录加入到customertrade-record-all% s1 h% f) ]0 x* P6 \% Q! R0 y
end
% O9 R9 Q0 [+ {: E+ `" V
& [4 h7 k. `! \& W3 J# pto update-local-reputation
$ \3 E0 y% [2 V4 p& L' ~$ Mset [trade-record-one-len] of myself length [trade-record-one] of myself" B( _  [/ _3 H1 A

& {8 D  Z5 Z! J1 @$ S' V' f8 I4 Y1 R& c4 I2 _3 l
;;if [trade-record-one-len] of myself > 3

' O' M& h( P! X7 ~& _; hupdate-neighbor-total
- \6 S  @( a+ a& n. V; L: j;;
更新邻居节点的数目,在此进行
, H- A+ l5 b2 W* Hlet i 3
. [, c2 U, l( A' z$ ilet sum-time 0: b$ _0 o" x( f9 W; ]
while[i < [trade-record-one-len] of myself]) T( O' k4 N) o/ Z
[1 O4 ]; S" b" q! n) a; K6 ^
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) o, w5 ?4 R% lset i, S8 x6 [1 d- K4 K! |) o+ M1 i
( i + 1)

+ h6 ^! s& ]  Q( q]% [, |+ J; g' w' o  h7 k$ R: K
let j 3& x& |1 N$ j0 @- {7 {* s
let sum-money 0* N  Y( e: U8 H: \
while[j < [trade-record-one-len] of myself]
1 k  z+ ?9 M3 ~  G! H[) o2 I8 o% l$ Z2 D
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)/ q* e# z+ t  G: P5 S
set j# q9 X' B7 @4 e$ [! `+ c2 k2 k
( j + 1)

" k, s/ P: u1 I% d; p6 m]  R0 a" J& p4 c9 t/ }1 b
let k 3
! X: t  F, l1 ]) \4 n5 Alet power 04 u3 S8 {* U6 n" Q
let local 0
2 }4 P' {- r4 }/ Fwhile [k <[trade-record-one-len] of myself]
! w& z' Y, P) a" N[+ W3 E! e. u6 f+ \
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)   v3 I  k5 ?9 k: P7 I6 H& |
set k (k + 1)
  s' J9 o* b8 }8 t0 ?/ o! Q$ Q6 r]4 V' ]& t: B2 x! i/ ^! E  ^
set [local-reputation] of myself (local)
- a7 X9 D  M  U. ~1 ]$ y% [/ H7 J( i! Zend8 \' ]) e0 R  z0 u4 G3 m

7 z* q% \* f. O6 w4 W( t6 o8 cto update-neighbor-total
& m3 D0 e- f. ]# b/ a
! K' \( c# @* w( S4 @6 kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ x# V1 f9 M) E( \4 R& ~+ W

9 E5 C3 d. M- }" I$ E2 Z& t
4 u) s+ u6 A; I# x  ~
end& h+ {0 f) a8 j& [5 r- o/ @

0 c# x/ c4 b. n' @1 Tto update-credibility-ijl & h+ R3 Z  W( O  h

+ W0 ~, o; ]: V/ T/ i  c5 P" ?: R;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。9 }! t2 i' A- ]$ ?1 X% o4 R( [
let l 0
4 R0 H9 F- w9 c4 z6 N! U" `while[ l < people ]  k- X( z: O$ O% f" O
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
. Q: _" r) g/ @[
0 ~! V( y7 u, C- y$ slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. X; A4 M3 T! O# s0 }: {if (trade-record-one-j-l-len > 3)8 Z! T. C6 U1 h7 A* q
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
# h# ]  O9 F6 x) a5 nlet i 3
7 c& Z1 W3 l$ f$ f" _2 ?! Glet sum-time 0% v' W! `. G% m
while[i < trade-record-one-len]: l5 q2 A3 f$ ~
[
# |+ o$ ]$ ~% _) Vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: F/ q$ z4 E5 J% ~" V) `set i: `3 k' u5 H7 u4 G1 K! s! y/ P
( i + 1)
% i1 g7 [& p% l
]$ C( ?$ p. ]# n$ j- Z- e7 u' l& u# s) V
let credibility-i-j-l 08 S% r3 V6 I4 x
;;i
评价(jjl的评价)
9 K; M1 K* B  H: {( k. B9 y* hlet j 3; W1 ]) n8 P/ q4 a- k
let k 4) j6 Y" h5 E  ^8 G* v/ @
while[j < trade-record-one-len]: h' @% G! o" d0 u- M. Y0 k
[
! k+ p- s8 t2 k8 M  U8 \while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉; U; t/ U, c  X3 n" U) n2 A& {. g
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)& |8 l1 S. z; N7 K. |
set j
9 q+ a0 u. `0 j) n' u6 L( j + 1)

  Y; h9 x5 ?: _! c$ e; t+ w( r9 I]
1 `6 ~# Q  A# Gset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
* g( K3 c7 _- o* h: _7 L1 y' P9 ~, n, s# |5 l( b  V( E
7 ?% p9 w6 \% I6 n' |: X
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ ^- U1 `7 K$ x;;
及时更新il的评价质量的评价
9 x% U9 o3 {8 {3 R  c0 Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; |  M. F. P0 l$ f# B; mset l (l + 1)
) B- |7 z; y  g7 Y]& C3 r! }0 h. n9 t: x1 ?
end$ |4 g8 U- N/ M. U/ Y* C
; u" Z0 k1 p3 l: y  T; |! h0 z
to update-credibility-list+ [, S, D/ w2 y* n$ E
let i 0. u; m+ D) a& r" M9 D$ Z
while[i < people]
2 M# v$ i, z, ?2 R. ^  v0 Q[
9 N9 j: f* h7 q7 w0 ~let j 0. B" ]* V- X; s' n( u+ \
let note 0
2 f3 u$ ]5 Y7 g- {let k 0- @: E; A6 k" B0 T+ q. d1 ^5 Y
;;
计作出过评价的邻居节点的数目
$ V2 C3 c2 [' J2 Xwhile[j < people]
" S: ?0 H: W* y' f[
4 u# S+ B& @" ^( d! gif (item j( [credibility] of turtle (i + 1)) != -1)
$ \' T9 A$ h6 ?;;
判断是否给本turtle的评价质量做出过评价的节点( l. S- }1 Z" i& @. l+ F1 q- Q" N
[set note (note + item j ([credibility]of turtle (i + 1)))7 k4 V. D3 w5 ?# b* e" U: c
;;*(exp (-(people - 2)))/(people - 2))]

0 x: w" c, H" x3 G) O7 zset k (k + 1)# b% P2 \6 b9 ]# ]
]
& Y, u  y' V" A1 i+ F2 {set j (j + 1)
$ c9 p3 M' r1 L0 M# ]! W]
: z6 y3 ^" E/ `& `5 A2 Eset note (note *(exp (- (1 / k)))/ k)
, M/ z* f/ G8 W0 T% Jset credibility-list (replace-item i credibility-list note). ~4 L7 e: {4 U7 l' z: U
set i (i + 1). i& F0 Y8 c* E9 L. W. H! F
]
. E  E. ]" ]4 A. ]end
* Q, H% n, g9 I8 w: W8 B; X" K( j9 E( P: v' E5 \0 q; e3 x
to update-global-reputation-list
) u4 o9 ~$ M  I5 }6 Zlet j 0) q3 x) T. n( d, M8 P1 C
while[j < people]
5 ^6 W& n7 k( u[
. q, c% M1 _8 r+ K; ?* @# i' mlet new 0% N% `  t4 B/ q; L# Z
;;
暂存新的一个全局声誉
& O- P* c! t# y+ [) R' g0 m$ q  alet i 02 Q6 `8 ?; \# d4 z
let sum-money 0/ X3 ?1 G' E1 X& ~; d
let credibility-money 01 G* x3 w; Y5 b. L/ \" ^
while [i < people]7 o* G2 K/ C- U7 i( `% P, ^
[' c) M1 f" P0 r! W3 N1 n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! Y7 D/ c/ v' ~2 y% ^. hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 [6 R2 Q: N+ d8 W" s; f; ]1 ~
set i (i + 1): c# W6 D% [5 E* \  Q+ w
]
; K) }' Q4 Z' s* P* `% Clet k 0
% w4 I* D4 z2 V. klet new1 0
9 M0 \* W* C6 a3 A6 a( |while [k < people]
4 l7 k# L2 S, u9 R' v1 ~3 h( C[
6 O) \, k. u3 ~3 @set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)  X7 T6 o0 `+ w, p1 R: E% x# ]: `
set k (k + 1)
* y1 }0 z% |" ~/ ?]; a9 ?( |$ Z) \/ l6 x! j. k
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  [1 K( A3 y1 Z0 R$ lset global-reputation-list (replace-item j global-reputation-list new)4 `( x7 V) ], ^  p/ m
set j (j + 1)& D  C! g. a8 |" F( Y2 n' ^+ V4 {9 V
]
% W2 I. O/ k$ ?  T6 a% u" send
4 C  w9 W( E  z" P9 x9 f) ?
% e1 b3 f0 t( \! c5 b3 n$ N# K0 E9 R5 o. c# L

; B  X5 E: A9 l& v# [6 h! m6 kto get-color' ~. b9 y0 [+ |( y( g& M/ a
8 ^! d8 S' q: J4 @5 l4 \  ^
set color blue

0 K+ q7 b- w! L" L, Hend; N) E4 y2 {2 m- k9 ~2 G1 W8 ]/ {2 r

# [: Y5 x4 z( c3 z* t0 Kto poll-class) W" H! s" y& q& U' D5 J
end; `/ d9 e% H6 X
7 s* Z1 ~3 W* r; `' J% D
to setup-plot1  I1 C( l1 A; R) F
& k3 |, {4 I! u6 u; w
set-current-plot "Trends-of-Local-reputation"

# l; g# y. c/ m: q" y0 L% H: }& P
set-plot-x-range 0 xmax

7 @! B  G/ L" v
+ K. T+ V2 z( b" rset-plot-y-range 0.0 ymax
. Y1 e  J7 m. Y! Z+ P% s9 q9 C
end/ C' w3 ]- H* b' g! v4 z
, X* }5 ?0 U9 q0 z2 I* U$ R
to setup-plot2
$ }0 ]5 d# p$ k8 l
8 C& L  X: U5 G* ]set-current-plot "Trends-of-global-reputation"
" x- `  M. z8 w' i; e
. t/ b* r1 B# p; o* g/ i/ B, o
set-plot-x-range 0 xmax
0 u* E/ S8 Q. @, G% n. ~
0 F; g) }5 L& R1 E; e9 @  }
set-plot-y-range 0.0 ymax
, k1 K/ I2 I: A6 u: O2 c
end
- N; v: s: U0 J- m4 b
3 S5 X6 i" Q; L. B( j6 qto setup-plot3
0 Z, Q  p' n3 k3 d! J
# o' {9 ^* `7 N, t1 P) Eset-current-plot "Trends-of-credibility"

8 \; K' I$ p; H6 Z  O; t# M
( I  _9 Q! Y  m6 J+ bset-plot-x-range 0 xmax
9 S' s! o7 D. L: P: M' k& t1 T

' _$ ~; q# `2 m/ G* X, t3 pset-plot-y-range 0.0 ymax
1 y9 w: A# D6 U. a/ A2 \
end
. y5 K9 k3 Q3 S: L6 l* M" Q& X3 r6 w4 H8 f" d
to do-plots
- J) C# c. \' N. D' |- |set-current-plot "Trends-of-Local-reputation"
7 G5 C) j* J0 xset-current-plot-pen "Honest service"( y! v: R) E3 D8 q# K4 c, y
end7 r/ v. R: ]0 b9 b$ U; q; J  V

; A9 d2 t8 v; A" n, Q' X3 x[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
" C% c  @5 _- P+ M. v$ X7 n% S) L; X5 h/ f6 w4 X% l- l6 @
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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