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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:# ^: j0 P: H8 l' ]0 y2 `: o
to do-business
2 v% f+ I3 `, R7 Q rt random 360
' S3 b- p5 n& P6 y; ~; B fd 16 E7 E  e% V+ E$ n
ifelse(other turtles-here != nobody)[
' b! O. u& ]0 ?   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.
5 H& K; X) A- ?$ ~9 y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 E/ g$ g* s3 `7 F" G9 a   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 z! c+ }9 j% c2 b. i% g) Z   set [trade-record-one-len] of self length [trade-record-one] of self
6 S# b& q# e8 Y   set trade-record-current( list (timer) (random money-upper-limit))
$ ]; J0 g- f+ @! d, z! ^, m
$ A/ N: d. [8 S$ n- n. o问题的提示如下:. Y" {0 w, N6 F  t* R1 u
/ l8 [& d( O( b* O, r0 f
error while turtle 50 running OF in procedure DO-BUSINESS  O# W% b' t: x& _; P8 M# L
  called by procedure GO
* P" P4 |1 ~5 I( I0 X% @; o7 @OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: ^6 \  V# o1 r! g* v  ^
(halted running of go)0 w" f7 b0 u- d

: B( b9 T+ I" F/ @1 i- ~' ]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~~/ A) e, e# v- T; i0 W( c2 [
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  `8 T0 E: [* X7 i2 g; r/ S$ K
globals[
4 K# t) {6 w% dxmax1 z0 ~) c" ?8 E# ?/ ]/ C4 v& Z
ymax  D' l& G) N4 X4 m" _& }/ }2 o
global-reputation-list  [9 |. ^* T0 g
/ c) z3 T; I( I
;;
每一个turtle的全局声誉都存在此LIST
0 A. y' x8 E: p& H" k  m3 fcredibility-list
6 Z5 M" @' q6 w: _1 f" B;;
每一个turtle的评价可信度0 \. {  T! \( f  K6 n) j1 r
honest-service( S: v$ T  F. u+ _" p) Z
unhonest-service7 Y5 d# o, B9 ]! M2 n# k$ m
oscillation' b; O' P: i8 y2 P0 @
rand-dynamic
& l6 ?: y. o0 u1 f9 q' r0 M]( \1 l  u( ~% {" e4 x. ^$ E/ q
% T& O6 l+ ]$ z% \, ~
turtles-own[
+ W0 b2 j# @3 w, W& A  [trade-record-all
- g% F, r" A2 y;;a list of lists,
trade-record-one组成
( @$ \) L& v5 }/ gtrade-record-one) G, Y! t1 F# i: i. Y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ B" V5 G/ g! `: H* l9 @& G" s: F
& r+ H1 k' D" }! ~& |+ }
;;[
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]]; s' n6 H" m+ J  q# }/ ]
trade-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]
. U5 e6 S! l0 ?& T2 ~* A/ Ocredibility-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, z3 ?9 u; P- W" O2 _  ^. M+ @# T
neighbor-total5 Y+ G, z' m3 Q; V8 J
;;
记录该turtle的邻居节点的数目7 l3 L3 s& ~1 M- |' R: y
trade-time
8 t) m) y+ G- D6 t;;
当前发生交易的turtle的交易时间* L9 ~- j* r: D  v
appraise-give# Z" l% A  _4 |/ O9 O
;;
当前发生交易时给出的评价1 F4 {: @) A& d* P/ D) A3 y
appraise-receive
) |6 i, w  c! y2 M- G; b;;
当前发生交易时收到的评价) ?! E- Q9 P8 `/ c9 p, B; r2 ^7 ?% Z
appraise-time5 L" b  b% i' M2 p; ^7 a& u
;;
当前发生交易时的评价时间
7 P0 L1 K- x+ a4 L* Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉3 ]) W' P9 o4 k' D) ]6 u# s
trade-times-total8 L* C- w% ^% \. S
;;
与当前turtle的交易总次数% X# h* U! E7 ^4 O! B  h  W, I5 v
trade-money-total
* ?% W5 g2 k7 K5 j7 A' ?( };;
与当前turtle的交易总金额
9 }+ ~9 I% i, H" F5 Hlocal-reputation# c& G2 k/ Y% s1 A  S! Q/ y2 C
global-reputation
0 `: [" x! ~0 W% F3 J3 p) Ucredibility9 }' I) ^. Z) ]) X
;;
评价可信度,每次交易后都需要更新* r% \2 @+ C) V. b: @$ d/ s
credibility-all3 J: q! u+ I( K
;;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 k& q8 p: I3 h6 E4 D
6 M: g0 O2 p; i; l6 O' p
;;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' H6 P# r( c1 G/ q; f- v6 ?: R
credibility-one
5 ?" ~  Q! [$ |;;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people0 ~; V5 S1 Y' z7 j5 Q' S% n
global-proportion
* U& U1 \  o7 F5 _customer
) x# i; b, c* ]# C4 ~  }! E; Q* Zcustomer-no6 P6 R2 e- }: A
trust-ok
# o$ w. [7 D, J; ^trade-record-one-len;;trade-record-one的长度
! J2 a9 k- c. M9 l- X) I, ^]; C: |0 l. m" p- z/ D
4 P5 q2 J( X) f5 y  k: s0 c
;;setup procedure
5 I4 _+ \) N6 g' q* }+ c5 [) M) o9 y9 ]2 C% F4 ]% l# }. H7 ^
to setup' J2 ~0 d7 A' K8 T2 x" _$ g" |8 W2 R4 i
6 i3 F( c! m( t" B& p6 x* Z
ca
$ t' M/ P  S& K( v0 \6 G( {; l
2 c2 G8 `: I% i) W, R- \3 v
initialize-settings
& Z* D1 S: b- M* p
* d. S9 r9 _, H
crt people [setup-turtles]

1 W! L# ?7 D. l7 I8 O" |: g6 n: l
, E; |" y9 r- H7 e5 k! y7 Breset-timer
  ?0 S3 m: r9 Z0 X, X
2 F6 M  |" W/ J, w' K2 ]5 F3 o4 s
poll-class

1 [/ U1 s7 `; g& S! j- [$ e5 O+ n3 H9 e' g! k+ k# l- P7 v3 {0 J
setup-plots
( [, W2 l5 x8 Y9 U# }) o+ l+ a

5 X/ J3 l2 ?6 ldo-plots
, _; u  H$ h5 E! z1 u  y! l+ P- Z6 I
end$ ?/ k9 q' A% p7 E; k% a

: H5 s. d$ ~* j& g3 a& i7 gto initialize-settings& L* g$ q# w; j% {0 w/ ]2 L
5 t8 C  y% |' p  Q
set global-reputation-list []

& K, {2 `: U6 {2 E5 k& R' F
, D; }% D; B1 m# Eset credibility-list n-values people [0.5]
- d* R, W% H4 }9 g' Y* s

$ J- I8 o+ _# F  F1 {7 r* yset honest-service 0

# N8 n, p8 B( X# o
8 ~5 D  M3 K# J; T) F) Y5 Tset unhonest-service 0
' N  A& S" z9 b, g( P/ k
7 }* u. o, y2 a5 Q- f* Y8 d
set oscillation 0
% Q/ j$ k' Z5 D  O, C5 x7 c! [  o

+ N/ h/ j& e6 g2 r5 e+ ]) y8 L- rset rand-dynamic 0
, [1 J& E" J, B! r9 I" M
end' f" X1 l1 B' `  W2 e$ N! ^
9 y, Q# [) Q$ M% D. z7 p2 `7 {
to setup-turtles
& x% w% p  w) K2 a; t( Uset shape "person", @' ^( ?$ u( P8 K
setxy random-xcor random-ycor
% `& R1 c0 O" e7 r* s. Hset trade-record-one []
; G' |0 W( X2 z; F1 @

/ G3 x/ t  o% Z% Mset trade-record-all n-values people [(list (? + 1) 0 0)]
% @/ n3 m2 t* m0 S5 W. l$ S
& f& Q. a$ D' o+ P
set trade-record-current []0 M: x( U& ~. _2 S* x9 [
set credibility-receive []) A+ q% X! t3 @8 o
set local-reputation 0.5
- |! R- o, Q6 p. ^& ]& f% Iset neighbor-total 0
" N; R; J/ H- [0 k! w" ?2 nset trade-times-total 0- I; b1 j3 I- h, {" l) B
set trade-money-total 05 s. T% y& l1 }
set customer nobody
3 s2 y- m  s" r3 |, bset credibility-all n-values people [creat-credibility]
/ l, S6 M0 Z/ f% R! N4 ^) {% Hset credibility n-values people [-1]
7 }6 ^' L  y6 n1 }, {5 Kget-color7 h  M. Q- U2 E( V+ A2 W5 x
3 r; F1 t. H  _5 t$ k5 A7 |# Z
end8 j* [7 U$ V$ E
6 E3 |! J& K, i+ N/ \, ]$ S2 S
to-report creat-credibility" `$ C0 [- e4 \9 S5 h6 ]; p2 s. m
report n-values people [0.5]
! p; `# H& X1 A3 X4 Y/ eend3 `8 \1 p. n* j1 ^: B" ~- R, f( Q# @
/ l2 ~* Z, U  I9 e* Y& Y4 m3 j8 X! ~
to setup-plots
# f) E+ h5 X7 v
8 U5 @# B3 u# j, {9 [, qset xmax 30

7 I2 ^% ^! p7 V# {5 B9 Y
' `7 D" p2 K& n8 m/ Y* bset ymax 1.0
& q( _. ~$ s, G$ r3 D

2 e: E9 q6 r  M% P; `3 Eclear-all-plots
$ q2 ]$ T0 w+ f8 H- d

3 a1 T$ A' L! b( ^setup-plot1
& ^/ H' E3 @; a3 e- O

4 J" I3 W! D# S/ l  r# ~setup-plot2

& t; v* l. `( }. k% J
4 E0 r0 J/ |4 r$ Rsetup-plot3
  _4 L9 S$ ?6 m7 r' x
end
/ @( K7 x  P, [! T4 j- T
, E4 H8 v$ ^8 D& k9 o, F;;run time procedures3 V# i& x, i) @/ q, p

) K  `9 Y# e+ f% o% t- Y# Y6 x) Yto go
3 ^! g: G, g! ^' c' {5 J  T+ f5 r' `1 i
ask turtles [do-business]

& }1 q  i! D! ]9 Vend
1 E$ y" q+ T- |% P) g$ r8 u, J. H
to do-business 3 M& ^- H3 w# N5 g

8 e6 M6 Q* W# c, ^' P( R  [3 U% J7 Y# M/ v9 b) c
rt random 360
8 V- b% O$ W7 z. L) [. L
- c% }" d# H  L' H: H- K! }/ O, d7 c
fd 1

: e% f2 \4 P9 T5 ?
+ `, A  b# o* c$ C% E' p! Uifelse(other turtles-here != nobody)[

" _$ e  D+ [$ O, L
! L" t4 k- `5 @6 V: ?9 L9 _# b) ~3 Bset customer one-of other turtles-here

+ Q# l& _2 l% R$ s- U; L4 s8 h8 @" v
;; set [customer] of customer myself

8 Y) g3 u( G7 U4 @4 C3 ~9 F9 x6 O2 J( x2 P  H
set [trade-record-one] of self item (([who] of customer) - 1)+ h' e& V9 F4 K% C) e4 a' ~1 z/ `* l
[trade-record-all]of self
! `" d0 Y& o, X: `# ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) I* p% g! y3 S, K3 Q* G" ~/ E( x. W) ^* Z9 _4 S: P/ ^
set [trade-record-one] of customer item (([who] of self) - 1)
- i3 j/ g) I* h0 }[trade-record-all]of customer
2 x% I0 a0 I# p0 p% N$ j' b5 C1 o
- ^1 h( f8 U0 u; T- E
set [trade-record-one-len] of self length [trade-record-one] of self
* Y1 e2 j6 S5 k) H$ U+ i

7 U0 L: R3 A, l( R" |set trade-record-current( list (timer) (random money-upper-limit))

* l$ F& y' w$ p2 [/ F% Q+ q* {$ i9 ~6 u$ ^8 x
ask self [do-trust]3 }7 J, {# i$ e" n5 z6 K
;;
先求ij的信任度
* b! `* ?) ]1 @( A9 ]" Y$ w" z' C. p: O
if ([trust-ok] of self)8 K4 P! u/ ]: R6 z
;;
根据ij的信任度来决定是否与j进行交易[" _; j+ V# D4 h8 E% u) q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 T2 J8 e5 F9 V) z) s0 v8 j

9 \2 G, |. B5 Q+ v4 n, n+ o% C[
. I' [5 v* Y8 }4 W2 P

% g1 ?( w" {+ g! a+ y( e& @do-trade

2 B+ P* [2 f; x+ m7 C
& ^# D6 O, O7 f3 I: M( F2 q! |1 Nupdate-credibility-ijl

0 \5 T* ~. C1 H5 B5 J1 S* z4 @, p3 h& g* I0 ~  B4 _( q5 [
update-credibility-list
% Q5 h& F$ J( O; G$ b

% j2 H7 e% B9 D7 Z$ B4 i& Z! w8 j) ^) y+ L
update-global-reputation-list
+ G& Z& \$ M6 L: H3 N
) j0 J$ c- ~! _& Z8 m& t
poll-class

3 \' [; U# o0 q$ Z3 ^
/ ^/ D* ?$ ?0 a& w3 D8 Q' Bget-color
8 F) k: \. g3 H+ `" h( l8 C
- i: |8 a* ~# @# y" [
]]
* G" s4 U' u) M" ]2 F
2 l. N) p% N& t;;
如果所得的信任度满足条件,则进行交易
1 J2 D( d9 S+ [  o/ q! v- r' c* r, b3 _! X! g4 q
[
- h% K3 E9 o' E+ H6 V+ @9 x5 _
8 w5 C7 J; s  j7 B# }7 c- Y7 W1 J( _
rt random 360
6 d0 W; V. A1 E8 L! a
* `" y% _# e4 v) O$ }
fd 1

/ V* y" J/ X3 j3 u3 ~' E9 b+ R! e) i) i, i& D. I
]

$ V2 D. O) }' @9 c7 y' m5 I7 ]0 a9 _* y( n
end

# D: Z; L# \0 C$ ?* O. d. d
* ~* i2 z4 W; ~4 M4 Eto do-trust
- }. ~3 W! \0 c& k, ^9 D2 {set trust-ok False
- G7 R! G* s: K8 {& G* p+ b/ Q* ]
3 e! d" E. A+ N5 e5 C8 z
' E6 H: H# L6 |! K: j
let max-trade-times 06 ]) r) q. {+ l3 U9 P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 N+ V: S4 q! T, t: m3 t$ b( vlet max-trade-money 00 g5 q& T( E9 a4 S2 E3 O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- T; i+ U9 z$ S, klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- s9 `- O/ w" M
7 A4 O. W, w7 ^0 f# a% a

! [! b; E  m* E/ Y1 j3 uget-global-proportion5 Q  C5 G8 c) E$ R
let trust-value
; @7 c( s, `& p' B. p- Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# N; {( }7 S2 E/ \0 `& }+ c+ S
if(trust-value > trade-trust-value)# ^. X' W. }9 M2 y9 k9 k
[set trust-ok true]: j7 H% }; U7 K6 C+ ?
end. g! N% y9 Z! ?; u3 x- r

0 |+ t1 P0 G8 [+ [) }to get-global-proportion
6 M  d0 k: d* k3 y) U; {* s+ k; \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& _# j# `+ F7 l  K: g- l6 o
[set global-proportion 0]' V/ ?# K6 z( W2 h; R' P
[let i 0! x' |2 _5 p' x; c1 P
let sum-money 0- U  ^( w' R# R8 S! k) N6 z
while[ i < people]& C4 X, t$ o  h
[, d# r( T0 d  }0 ^' d2 b+ q
if( length (item i3 R" {3 U2 K# Q) Y6 M
[trade-record-all] of customer) > 3 )
6 |  g: i+ V2 {+ F: i" o, M& }: T
[0 Y( N2 c6 [; l3 a; a" ~% a9 \6 {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* M8 M, U8 I/ D6 u) W]
0 ?- H2 S/ D8 q6 N]
1 D2 o/ E. X6 @- g, wlet j 08 S( I% B' K$ a
let note 0
+ c4 P# Y' c+ d' |0 \& Jwhile[ j < people]8 P( }; c" `: ]  H! J5 O
[
  u- ?6 R" v. n8 f/ l! vif( length (item i
; v5 M- a, v* R# _[trade-record-all] of customer) > 3 )
4 y" c# Z+ A8 w1 f
[
) ]! B/ z, u5 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 K6 [2 w% F. E2 t" M' C* I$ J4 V; ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( h7 ?/ l* ]7 b% _3 ~" p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* {5 G) P: a; d9 N6 L]2 ^: R/ I% T! u* t' }5 e+ Z! T; x. M
]
5 p) X- O% D- K! _set global-proportion note
) k6 t2 [0 }$ W* ^& A1 u3 d# p/ T]
  J: `! W4 l4 P' T3 J1 Eend: K+ H! I) Y9 @3 ~' w( w7 w  ^

; t, }) J5 v5 s- _to do-trade8 q7 v& s* [+ J
;;
这个过程实际上是给双方作出评价的过程8 c) C% B3 M! @+ Y: T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 o2 a6 y/ ^  C6 p/ N5 i, `. \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ j1 X6 f) x6 ^- M+ I2 a1 qset trade-record-current lput(timer) trade-record-current+ {4 Q2 [" y2 P# {0 [
;;
评价时间
5 q9 ^  i0 L! M! N7 l0 s- z% _& p& e' uask myself [2 h4 N# @( c# s. ^* ?3 Y
update-local-reputation
& w- [" I  {% @; ?8 Sset trade-record-current lput([local-reputation] of myself) trade-record-current/ h8 G3 F8 h$ X1 g4 |/ h9 O
]1 i, R) y) [' q+ \7 _
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  B9 c0 @9 x. @) s
;;
将此次交易的记录加入到trade-record-one& N/ `3 F5 k. X, [
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- b( t7 S- s" B. `3 o3 m( X5 O
let note (item 2 trade-record-current )1 f# z$ r! l; M/ @6 A
set trade-record-current
  H1 e: j0 f2 T(replace-item 2 trade-record-current (item 3 trade-record-current))

  x. |! P$ I: v$ I* X. O- _) Pset trade-record-current
2 k. Q. R- A. J8 s(replace-item 3 trade-record-current note)8 z5 @, J1 S5 o0 Q

9 T' @. f, w- v, h0 B2 {

6 b6 S0 U% k6 ?+ r, I( Hask customer [' d; p+ V- x, g3 g
update-local-reputation
0 s: p  V' @4 x' [$ H+ d  Gset trade-record-current
7 \( S3 d$ U/ E4 U! C(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 z) O- ^  b4 d# ~; V]
7 i$ D+ u; ?& \& ~$ P$ H: [' O. s# l) A: Z3 D) h
8 j, R$ \: @) c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' w& [& O) x5 h/ L

! a( ~7 Y& }% Q& P( dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, l( r7 z/ _+ \. W! ~' j7 s; \;;
将此次交易的记录加入到customertrade-record-all# D0 r6 k- i) N9 h  ]2 K
end8 N# ?: v- \' W; N9 i. W
  F" T6 m& E  q5 ~% k
to update-local-reputation1 h+ Y4 [3 g6 @" ?% Q6 U7 H
set [trade-record-one-len] of myself length [trade-record-one] of myself0 M: c- @; L& A4 D! X- a

7 q8 [: x3 p* d, y% q1 c* n- N1 b* W& V9 W8 Q* I2 Z/ J
;;if [trade-record-one-len] of myself > 3

: F% s& [: \/ ~( v* U  Yupdate-neighbor-total
5 W* }' Z4 P! \- t2 R;;
更新邻居节点的数目,在此进行
5 P  V, |5 T0 o: C: b* x! dlet i 3; b  H- \  ?2 T( l
let sum-time 0
$ s  k! T4 k0 X! l1 rwhile[i < [trade-record-one-len] of myself]0 c0 F& Q. {" E% [3 ]" t; @
[
* N2 g; ~1 P" I# p* wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) z3 `" U+ E( D, q5 vset i- h% B) }; P3 t6 |. X
( i + 1)
$ {5 |5 ]4 z+ F0 x) i
]
% @* H8 H( ~! b: A2 i3 g) Slet j 3
  F0 S, f6 e- m0 \let sum-money 06 U5 w3 h5 I, R% y. W) B
while[j < [trade-record-one-len] of myself]
7 I& n1 k4 J; U8 [% m[: V; v) `0 m& a2 I, N9 g8 w
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- |7 ], j  M
set j
+ k+ F. Z! f7 B  N! T( j + 1)

/ k! h4 R9 S7 P- J  o]& j  P$ X# Y$ u6 u9 ?0 F
let k 3
; K  [& p5 x- V& B- Elet power 04 z3 L* `$ l5 p& @
let local 0* S0 @" r" d8 W8 P
while [k <[trade-record-one-len] of myself]
; R, e( ?" w3 h0 v- [  f[. {! o* f* g" o! \) U
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) + V* U6 o7 T$ ?# Y  Y  Q" C
set k (k + 1)- `6 H8 K4 E; P
]
7 y; t# s) q7 I0 I* g8 Cset [local-reputation] of myself (local)
  a2 _" y# M# jend, r: _2 a8 U/ Z% C$ _) \4 {
' G/ c& p3 k; j& f4 j6 E
to update-neighbor-total  l2 S; z1 h$ W% L- Z% b/ l; E

0 b! d7 H- y, [) y# q. A4 Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ f" n8 E! v, T$ O; T8 s2 o
& z1 [9 ]! L! s
9 b  Q# s7 I2 Y0 g: O. p
end! J* u8 m9 z, A7 E% T' t% ^

5 i6 Q! n' h+ z3 M! K" k3 r$ Yto update-credibility-ijl , T) J6 E4 Q: W; \, t) s
. r1 U) N! A% i. Y/ ^2 Y
;;
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。2 W; k- r! @5 t3 W0 l+ l" j) W
let l 0
/ T) ~) E0 F/ y2 n0 {while[ l < people ]7 u) f! g! c+ Y8 `& Z: e, G% `5 v* h
;;
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
9 N1 Z4 J9 N$ x; u- I- w[( d& V* X1 G1 ~) z3 Y4 q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)& p. ~8 y8 w- I7 K0 w7 \
if (trade-record-one-j-l-len > 3)9 ?, x* \) \0 @1 F2 Z+ l
[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
/ g1 a: b$ u, i9 L0 vlet i 3
3 T/ a* W& B$ N. r; qlet sum-time 0
% w2 Z' w) ^6 s9 ?5 lwhile[i < trade-record-one-len]
0 t0 {6 ]7 [4 r" U1 q[
. m' Z5 m9 d4 Q) e/ W' K# fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); t4 k. Z( o& m' Z' Y6 p3 F$ P( j# G
set i
% b7 X0 c$ X$ x; y/ a0 g' E( i + 1)
/ \% M' W3 ]: J3 Q0 ^" U
]
+ f3 t9 a6 R& n& F  m7 _7 Y+ Jlet credibility-i-j-l 01 n  F; q, C* }! ~# Y9 r3 P8 m
;;i
评价(jjl的评价); M: v4 l% ~$ k
let j 3& y% W5 f1 A. ~/ ~# y2 J1 g1 G
let k 4+ O# w- W: e; p6 B: L
while[j < trade-record-one-len]
" X# a: u+ y2 @: t6 G[
+ Q2 t, W- \) m, K# z$ C- g; ^, x1 zwhile [((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
! x& \: A+ n# _: F5 jset 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)( t! @/ r& v6 n( d4 d) l; a# x( a: w" B0 X
set j  p5 g- ~9 S* B$ ]
( j + 1)

9 L5 g5 |6 i" B, S% s7 t]6 M2 D- n8 E3 h! f7 o. q8 t5 I) F. E
set [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 ))% X! ]! J3 D9 |, t1 o8 R

9 F/ c; {  {8 {- D

) u4 e, K2 e( K# k- k. P$ x7 Rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 X9 |( a8 O$ U9 n
;;
及时更新il的评价质量的评价
  o' i8 p2 i: w* n: Y! ^( a! ?1 Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 S5 [0 Z# B& q0 B5 H* y
set l (l + 1)
: p% }* F: w1 K]
  H, M9 y! Q: h: d7 Dend& g* ]3 D$ B0 ~, c" ?

; S4 F/ R( {. S8 B# G. \to update-credibility-list
: h4 B0 a4 Q, a7 l/ u; f8 Olet i 08 K6 u4 |5 w- A- k+ A
while[i < people]- m3 n1 p9 E3 t  u9 B# i7 O/ P
[
9 T6 L% l- i; d0 ylet j 0
2 Q' v6 _& A! _% K  Alet note 0+ t9 Y0 V5 o: ^1 Q, z
let k 0( W8 D* c2 @3 Z" {2 A
;;
计作出过评价的邻居节点的数目
+ G' U; @5 T- Zwhile[j < people]
7 D3 ?' R0 u7 E7 O  F1 _/ [[
- @) Y7 _: \# {/ ?0 f+ I; [if (item j( [credibility] of turtle (i + 1)) != -1)
, Y0 y- k2 t6 P;;
判断是否给本turtle的评价质量做出过评价的节点7 w( a# p- O" V  U7 h: O
[set note (note + item j ([credibility]of turtle (i + 1)))
3 A; Z' G4 z" Y$ j;;*(exp (-(people - 2)))/(people - 2))]
, X, J+ Q  C! j% V- c
set k (k + 1)
4 g0 V4 z4 _; W* O# W4 o  n1 H]6 m+ s$ ~' u0 c. G1 w+ s# N
set j (j + 1)4 u+ n. z4 ?/ a
]
8 y2 T) _. ?% g  T. }. d  ~6 M- rset note (note *(exp (- (1 / k)))/ k)0 g  _) D6 t6 X: x9 D
set credibility-list (replace-item i credibility-list note)
) E" J) A# F4 z, [+ a& D( ?+ {set i (i + 1)* @* q( J4 M  L$ F0 w
]. i  [. ^0 j6 W. H5 p4 S. ^% u
end
$ ^, k$ p/ U- \
. `, l7 _7 S, {3 b) n1 Tto update-global-reputation-list5 g! P* d0 |- ~% y
let j 00 |) x1 z6 C6 v9 y
while[j < people]
: @; E  T2 d! s/ a[6 i, F* i( N3 ?  x+ L
let new 0& l, n8 x, ?& V5 [' _# h; u
;;
暂存新的一个全局声誉0 G7 w! c5 W2 V# t& e8 y$ t
let i 0+ U% e$ x+ _# y$ n1 I* P
let sum-money 0( c. n. J& ?6 {5 [! W8 l" ?' g6 P
let credibility-money 0/ P' N0 Y- i. T/ a) b
while [i < people]
/ A* `" c' Q  u( T. z6 n$ [2 e[" i  `: H  C' {/ [3 R4 l
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ I& a* K; \8 i8 I* b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& R8 T, G8 G& m! c4 n' U4 k
set i (i + 1)! K/ o4 G7 Z. h  Q* Z4 w
]' l' y8 n+ h; N: s( _
let k 0
8 }' i0 Q2 ?2 F  ^7 ?4 h) flet new1 0
; e) q; f" d/ |; k  `while [k < people]) a# d3 K% y+ i* q. D
[; e/ [9 F4 x9 ?4 `% Y7 _  |
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): K0 o( z: L# k$ V! |& x8 e1 F# T
set k (k + 1)! m) U' ~  E: J" n& x" m
]# r* `' P3 N1 h9 w* r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 E+ I0 L) ~1 p) E% s# f
set global-reputation-list (replace-item j global-reputation-list new)
9 R# O# h9 t6 a+ Jset j (j + 1)7 e  Q* W5 N# C5 W5 P
]
* a) k; X1 e3 a( Z: u; F9 fend
  _4 D7 s8 ?5 i: F
& j6 \) k7 {9 F- Z% O  E6 u  m% G; Y: m9 n. M6 ~" E
; i. g/ C% R: K( ?
to get-color* d: v3 Y& S+ h: F; }1 z5 t8 u; H" P0 D1 }

& v. b2 o+ k. X( i% xset color blue

+ f, Y1 b; A& X% ~7 gend
. s$ z8 z" m8 j% Q& `4 Z, B
+ o* x7 t% ~# ]' T5 N: ?& Z& N: A7 i0 q: Dto poll-class2 }: R4 ?( S- U* W. r
end& P: a5 L. C# i  n; Z& l

. F# M7 j/ B6 n1 ^  S8 Zto setup-plot1$ v* S' A* |2 S8 {0 R
7 r. C( [) `7 H
set-current-plot "Trends-of-Local-reputation"

0 a: Z& a0 |5 Q! ?' N; s+ r2 P7 i  }% h- j! \0 C0 a
set-plot-x-range 0 xmax
3 K8 T7 G6 D! l) z

. W- u$ B) g6 F# F/ {% k* ]set-plot-y-range 0.0 ymax
& W+ A! ^8 K6 u( }+ Z& i+ b: S
end
, Q8 E3 R1 k% d$ p/ C8 I% y' o% |1 A% R8 z0 H. e
to setup-plot2* c$ [' a" j) a3 ~( ]0 B

( C6 p$ H" @3 |/ f8 Mset-current-plot "Trends-of-global-reputation"

& I9 K( [' R: B3 ?; I3 `* v' G/ v) P& k0 `8 @
set-plot-x-range 0 xmax
6 t: I; T6 `8 p

0 I- K$ v& q2 K1 I( aset-plot-y-range 0.0 ymax
0 Q" }6 r( ^# W/ \' l
end2 z: f. w1 ]( W1 I* ]3 }  f0 g
$ n1 j; l5 p4 w2 b2 A# f
to setup-plot3" C( u7 r& P5 q# U& W

+ b5 @# ?# R* z" u, [set-current-plot "Trends-of-credibility"
( ]* w; d3 R1 T; D" }) ~/ W
* `9 x* q/ Y6 E  B+ e
set-plot-x-range 0 xmax

; N  d, B) u- _" m8 d0 q2 \1 f8 X2 G3 l- t/ U7 W2 W" _
set-plot-y-range 0.0 ymax

* u+ q3 E8 }4 e7 w+ \end
( B3 ?- e% q$ T' d+ E% h6 c, C  ^; e4 \7 |5 U$ {$ w- [1 u
to do-plots
1 L7 F' A8 R( B9 L0 h! t* |! I: kset-current-plot "Trends-of-Local-reputation"
+ A; B) @. c* E' jset-current-plot-pen "Honest service"  x8 X0 g& U+ u- H2 O: l
end
  M$ {1 o* n+ y! v' X0 _4 C
% x/ \/ ?4 A6 @7 j3 Y[ 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.
$ O$ u" H. a! j  p' j
  w- h& J# X: d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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