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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:
$ j+ _4 O5 z8 n0 |; X! `to do-business
2 Q8 N) b7 D( Y! h" x rt random 360% N7 P$ O* [) o- @! p; Y9 A
fd 1
# U& o# U. s' A# T: ?5 m0 f ifelse(other turtles-here != nobody)[
- i5 S9 z4 E; R) i/ d: ^$ ]   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./ c% p. p6 j7 P% \9 I* a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , i& x: k1 ?7 h3 X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 m- ~# _) R" |4 k0 E
   set [trade-record-one-len] of self length [trade-record-one] of self+ k0 Q( ~1 S4 A: ~3 b
   set trade-record-current( list (timer) (random money-upper-limit))
6 v* g) _; Z& \. ^+ \: C. ]5 k" J0 W" u% f" o+ m% e
问题的提示如下:
# F* g6 D) W3 {. Z: Z
  @; t* C9 [+ _5 Q1 k7 S0 @9 f: Oerror while turtle 50 running OF in procedure DO-BUSINESS
( s, w; d( Q+ w  called by procedure GO1 y, E1 f$ M1 B4 O+ R0 I. k0 e) M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% g9 G- p$ \+ v/ v
(halted running of go). s# \( y6 T2 f( i
& `7 a2 p  ]2 z, G$ e
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~~7 M1 F2 U/ k0 e# n
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  }2 Z: V/ ^/ A* ]0 ^  Q$ }
globals[
$ f" T- n4 g+ `, \6 F2 Oxmax* F+ x0 U; _% Y! w  b0 `- r
ymax. b4 D7 U4 s5 T# x4 x4 ~0 U/ L
global-reputation-list
( f/ O0 J; n) O1 {+ ~, F  P/ {+ Z# y$ v
;;
每一个turtle的全局声誉都存在此LIST! R! K) m  s8 H6 @& i0 v: S
credibility-list& N/ g, X4 I( q7 [% h- O) X5 \
;;
每一个turtle的评价可信度
. U0 e% q4 Q+ m) u9 @0 ~1 whonest-service5 W9 d/ u# {( z, D* W5 i% B% }
unhonest-service
7 A2 u; H+ R- `3 |- {3 M* T' D. hoscillation
% \3 _5 K0 Z" W4 w; rrand-dynamic/ Y0 T0 Q$ B' P# f
]
# }6 t  z7 }2 r  y4 q
7 d4 z% K3 q; @% cturtles-own[: ~* ~3 F4 ]" v% U
trade-record-all
% R5 q6 P* t5 J9 K" s;;a list of lists,
trade-record-one组成8 n" y" ?$ L9 r- d5 m
trade-record-one$ N) \  a8 f# G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, q6 @$ N# J( p
0 _6 X6 L6 `4 a;;[
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]]4 E6 m4 T' D) n. V+ P0 h% h
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]
4 Y" S9 q, I) L5 acredibility-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
4 v3 w" C; u& k" z: f1 ]7 tneighbor-total
# R* r: I# Q4 Y/ F; @8 x;;
记录该turtle的邻居节点的数目& F" C! X/ O; R9 y' t
trade-time
4 h3 j- s9 I  Y" P0 e7 s2 s  A' c5 d6 g2 g;;
当前发生交易的turtle的交易时间
6 H% s, y- @: Mappraise-give
' d" I% g  L5 l3 X  s! ~2 w( X* ^;;
当前发生交易时给出的评价1 Z' v$ _& Y: h& S: B& O$ [( Y
appraise-receive
( y. C: r3 I# A! b7 Z3 b" n+ b;;
当前发生交易时收到的评价
* B/ _. m7 P; t7 @2 Xappraise-time& \  E7 {7 T2 ?) r
;;
当前发生交易时的评价时间; W7 j6 J# ~$ Z. ^
local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 O1 ~8 @" V& u# Z. ?" d
trade-times-total
- S+ |+ ?# c& M- b;;
与当前turtle的交易总次数1 B5 A" A7 j+ L4 ?3 Z* K/ W
trade-money-total
( p& Q, a; X0 g1 G;;
与当前turtle的交易总金额
, a" f' [& q5 j9 [# X( P* m- Nlocal-reputation
& {7 V& ?2 i/ g7 }" {& R9 }- j) _global-reputation+ |6 }. |: a( z3 U! |
credibility
$ i0 U, ?" K$ A' ];;
评价可信度,每次交易后都需要更新8 K5 h1 S' Q) C; r
credibility-all
$ }3 P1 S' p$ u;;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
; N( C. V4 w. b# x$ Q& `  \3 L+ s6 o8 L% X7 S
;;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0.51 R4 H3 k2 |  t: N
credibility-one
/ s, E9 L3 L$ w& N8 L) R' V6 d;;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
" \& V6 X( e0 |* Xglobal-proportion1 Q& a6 {+ S$ M# x9 L
customer
+ V. c, G. e2 l; n* ~/ E  [customer-no( z1 K9 E% N0 i3 ~
trust-ok8 y' N6 b  T. u+ K3 i7 r
trade-record-one-len;;trade-record-one的长度
* Z' F% X9 L5 T9 h, y7 w]
' I. H5 b- I! a* k7 j$ o
- O5 O2 V, M: I, ?;;setup procedure
% [4 D$ X; d! \! W1 F' g
3 r6 t0 q, g/ |& @0 {# Qto setup
) v; w) s% b/ n4 X* }3 l5 a4 ?* U# ?
0 H) w# O- F  g, `7 l( A: D& U/ Gca

5 S7 Z" I" h) |( ^" S1 w6 }" j
$ }- [' U2 D( H- i, Kinitialize-settings
2 D% C. Q# Q/ @! `9 }7 q# W0 }

) R5 R, j* v& A) b" G* Lcrt people [setup-turtles]
! z6 f6 F5 s9 m( Y
/ ?' n( @9 M9 R% }. r+ D3 x' F1 n' `
reset-timer

2 @, r" k0 b  o$ M; |9 L, T' j0 G: S: i
poll-class
* m8 K# _& S: H) c3 g+ \1 ]3 ?7 g
; F1 W# E: e+ A! c1 y" b
setup-plots
$ s. X* Q7 K6 ~+ A* Q9 G

1 e- ?! [, g6 Qdo-plots
, v7 |! t; w9 ]& m5 Q
end- Z: N/ a) ^: Z% u9 N4 B6 R$ ~
) j1 b: T" c2 M5 D
to initialize-settings& Z& m! w" W" E% r$ y  R
8 n5 D3 Y" Y  j. ]5 C' ^9 Y
set global-reputation-list []

: M! R" H- y3 R9 f8 e2 o# ~# U
# q# D% c+ Q. `* p& n" e" wset credibility-list n-values people [0.5]

; Y: O/ d' Y. J' q1 Z# }2 o
9 w' K5 \9 {: A  L% Fset honest-service 0
0 _- q" l# b& Q. ?1 k
8 Y# M( f! ~$ l$ W
set unhonest-service 0
; T% M$ b% ^6 B1 X  X7 I) V0 R
+ w5 v% X& Q6 `! H/ i6 k2 m
set oscillation 0
4 V$ E7 [2 |5 M4 I2 C

5 d( U$ G6 x" r: D5 Yset rand-dynamic 0

( q  Q4 k! t  v* Z- E$ K+ P  p# L$ b, ?end
; }# J8 C  i: {: m; G
  e# m9 C" n$ L0 T, B/ B/ Rto setup-turtles * u8 r" ?6 n/ ]/ h2 C1 c
set shape "person"
: D7 S' r% H. i3 ]# ^setxy random-xcor random-ycor
5 M, J( D; Y+ w. W! q0 J) M3 h% Lset trade-record-one []! c2 t' |: M5 Q8 A% i. m

! `, I2 H+ W& U. T" lset trade-record-all n-values people [(list (? + 1) 0 0)] 7 A2 O. _5 d7 O% Y4 @1 P' B  j
5 F8 B4 ~. a7 }: J- \$ E! d
set trade-record-current []
* f7 ^' g2 y3 v6 d# X3 j, Zset credibility-receive []
/ t! P9 e" `2 c' V' B1 cset local-reputation 0.5" i5 t. A7 P  O9 ]" E5 i# i) f/ u& ~
set neighbor-total 0% i; c: R5 _* Z( k: k* {; y
set trade-times-total 0
; Y) C$ x3 q! n% a% Qset trade-money-total 01 X5 W& `: L0 B) n" f1 y& I0 b
set customer nobody
. ~9 \3 Y, V+ Y4 U4 t6 l* pset credibility-all n-values people [creat-credibility]2 `8 D; i! _* u# f) V$ |, Z, Y
set credibility n-values people [-1]
' ]8 ^$ ]- U* pget-color, @( m: p3 b4 E* a) f; B+ ~5 `

! ?2 `( h( M. Nend* O9 a7 p) \+ B7 _) i! o1 K) a
1 D8 m  `* V$ _0 T0 P
to-report creat-credibility. }' b2 {& m/ L5 M/ k
report n-values people [0.5]' S% ?; M* J5 z
end1 ^0 X7 M6 l6 K# n
$ i8 h9 F2 |# z* K7 r
to setup-plots
' ^( F4 c" t/ p! o# i; m) F# e8 y9 [
$ q9 W1 x6 g3 V  `& X  {. Zset xmax 30
9 T; e# T) T3 s: u! f' @
& ]# R" |' Z" D; K! C6 ~
set ymax 1.0
( H9 S  s* {2 g) H9 h0 E7 \1 d
0 @4 \, O4 @" x
clear-all-plots

7 |' T6 z; v. e: s0 L
* V  L  z2 r' v$ ~: o- N( @setup-plot1

4 i% S, R' U6 o, H. K9 y1 g; ^. f: r& P4 f* _9 u. S% U. z0 R2 o
setup-plot2
- C6 `) [% b; a* i# c8 ~; h
/ s6 U& n2 f7 F% g- s! d
setup-plot3

8 t* U* x8 O' P9 x7 j7 Rend( E3 M' p; V2 F3 G* ?2 L
# a8 {! ~0 h; p" d
;;run time procedures
( C! n# I$ ?, F5 v! f
6 j" S0 [+ a1 v8 c, Y2 Uto go% N7 ?1 P& ]+ O3 F; _+ \% |3 ?

# y5 P4 T4 }% }ask turtles [do-business]

2 T! Z& u) U# `  R( G+ l/ Jend
9 j' {, m% {2 ]% w5 z+ I9 d1 P
" J! G$ z6 |) Q7 \" G8 p9 z0 p8 ?0 Bto do-business + [' e1 n% ?4 p: G' C
; F$ P- T- @, g( C& F4 Z

9 h/ i  R! y% f4 ert random 360
& n% l+ N  p9 A: G; @
6 Y7 q+ _/ q  g) f( {6 P
fd 1
7 [0 f' j; {4 u3 f4 B1 d
. j* z! {, g# Z$ L; F" K/ L
ifelse(other turtles-here != nobody)[

: O5 c* x& d% P  A8 k" A' Z( E6 W( d' I& e- B, Q
set customer one-of other turtles-here

. L" y4 d* O" ]8 E! k
( _. D1 U3 u" {; p;; set [customer] of customer myself

- O, L! Z0 F) N& y6 U* l# X$ c& Z5 I0 y
3 T+ q. q( Q: eset [trade-record-one] of self item (([who] of customer) - 1)
# l5 `; O, S2 C7 A' n[trade-record-all]of self1 U( [& B/ `% p3 u3 N
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& j2 x* N2 I+ f; O3 e
  J/ M- C( R& V5 |set [trade-record-one] of customer item (([who] of self) - 1)
- P% p3 a- G! _0 F5 Q9 `& n[trade-record-all]of customer

' h" n0 I/ D2 T9 C$ e! P9 v$ }& v' C# |5 [  r+ v
set [trade-record-one-len] of self length [trade-record-one] of self

% u2 q  H; J: ?: c: K: l( `6 Y' S4 C( j  O0 U
set trade-record-current( list (timer) (random money-upper-limit))
/ |0 h9 u) c- G- Y( b& @

4 D$ E* T2 g5 o; y8 Fask self [do-trust]9 b) b5 @5 V' @, A+ g/ L/ E0 V
;;
先求ij的信任度
2 p; w8 {' o1 C8 Z/ c9 {
! Z2 u0 u4 B( b9 |* qif ([trust-ok] of self)
' n# b; y+ k. I, Z9 o* A+ y;;
根据ij的信任度来决定是否与j进行交易[# r* m3 L/ `- N+ V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 ~. a- P' y9 O: b
6 ]  d& \" b- O  ?+ {+ @
[
$ W/ Y1 v7 o# r+ c

2 i, d: u: C1 w5 J. A5 tdo-trade

9 L* S, L8 U3 q
+ K2 U# G* h8 Q; N6 Zupdate-credibility-ijl

! ^2 S  R" Z8 R& E$ Q) T# {+ k/ q6 S: ]4 s
update-credibility-list: [$ u3 U# ]2 L0 D- q1 W( B: m

8 z" e2 u+ m: M" L# |9 [& \$ ^6 y1 I- K* c% _
update-global-reputation-list
" y5 h0 U# R& W9 w$ i9 j
$ X5 _& q6 [' E7 \1 X; Y  @  J, M+ `  O
poll-class
8 H/ Z  G' X. Q, J4 F: J6 O

( i: Z" `8 _+ O, @' j; qget-color
6 [9 M- A1 |+ f! Y* X( |0 R( Y0 ?
) h% ~, ]. g% o4 y, e
]]
4 d& ~8 T9 Q* @/ K  n) r, ]/ {5 i/ N/ v% ?* h. `
;;
如果所得的信任度满足条件,则进行交易
; m. l4 I3 U* n* r* ~7 R
7 w# w+ U) w2 y0 K. L/ V5 a[
' \/ V; W1 i" O5 E) Y) V. Q1 v
; D: r; q0 ]. A# ]9 n
rt random 360

3 M4 }% }# a+ R  u4 ]8 C( w1 Q# F8 {9 f" v8 w/ j1 j# ?% ?
fd 1

: i6 F: M+ X: ?  N
% p$ P5 e5 E6 h4 U) X]
: K5 [5 T8 q, N# i, F' _+ x+ {

% C% [5 t! R. I( S, Vend
& _' O8 H6 D( ^# G) m* e
2 E( q: `0 B/ x  b, q3 D/ j4 t
to do-trust ' b3 q. ~+ w5 J  a/ X: o
set trust-ok False
+ V7 I( H) V9 x9 v" }
" j# V4 W2 g/ Y9 e/ u5 b

8 c% |9 p+ g5 L/ Q+ Blet max-trade-times 0
4 q. L$ V' }& Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% G/ H/ P" k; T. \% b/ o8 H7 J
let max-trade-money 0# T: l/ O) O( y' Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 F+ e2 j* x/ V# g4 ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 }* \# W# G2 _* W" c& K" \

2 `# D/ w3 ?+ c% u8 N
- z; u# E; t/ S4 u9 U
get-global-proportion
2 z' P& O+ z  N7 f2 clet trust-value7 ?& @9 R3 H. {
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)
! b8 l$ a: G! H' [; S
if(trust-value > trade-trust-value)5 l- L% g' n! ^6 h/ s; M8 y  S
[set trust-ok true]
1 ~6 q! y) `; w* u. {end
  V6 {+ W7 g! o' ~, C! U
4 d5 f; I& o* _0 R4 M' Lto get-global-proportion
4 P* j0 S" O$ Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# ], A# ?% p6 \5 i[set global-proportion 0]' F) p# O6 d( l$ s& o
[let i 0. W  p' w! A) V1 X+ e4 a
let sum-money 0
5 i9 c! A" Z, w5 Y* Iwhile[ i < people]: `) ~3 h5 f* y) J+ V- L/ h
[/ {, [" S4 A% \2 ^. p
if( length (item i/ B! ?5 \" K8 b! }& q
[trade-record-all] of customer) > 3 )

9 e  n7 s& ]  s/ F[
3 }* r# ?4 R% b. X6 I* V2 eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 U8 P* [5 @, m5 H. j]
  T( }' i' ~% O0 e7 f]
2 \0 R/ C$ Z2 R5 }0 B7 ~1 vlet j 0) P: r4 K/ N) @% p; C
let note 0
7 e8 S: M$ o# d, w9 B0 Ywhile[ j < people]
* A% y9 s# Q, d4 n" A6 y8 j1 t& Z[2 @- r4 W( K2 R; g6 q2 |( U
if( length (item i
! Y# A" ?6 c( H# w7 G% y5 X[trade-record-all] of customer) > 3 )
" a( n* Q5 a; ^2 {+ e, x! _
[* X4 a- ^. A* ~9 o2 x! Z. h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# @# a5 P5 p. Z4 L+ P8 M9 g- u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* w: b9 k2 S6 V, q* f, e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) V. T8 V, b$ f: Q; q2 f
]
5 y* Y  l$ B5 B6 x  l9 p]
0 u, ?' @+ z' }. r1 W) Z- Hset global-proportion note
5 w: X' d$ _3 z- F. Y9 v& G" |]
" }4 b! V. L& j4 d) Uend  e" u0 o  J0 Y% ?$ v) C; n

* W% R. A# \0 E" h) g" i+ jto do-trade$ ?/ _7 a6 c' W- N  t0 l
;;
这个过程实际上是给双方作出评价的过程5 U! ?. z0 d7 J+ D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% J2 W* Y0 h6 nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ b. y+ R& n6 M/ t4 v9 Kset trade-record-current lput(timer) trade-record-current( z- J  J$ g6 a2 |% Y
;;
评价时间
: I: K: H) _, V# i. v  z5 cask myself [7 T# C& e# V% x0 G
update-local-reputation
% d  J6 U! k( Y3 T1 Cset trade-record-current lput([local-reputation] of myself) trade-record-current& a) J6 c3 D2 _. x$ }
]
& W- Y0 J$ v% V1 \+ ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ X7 M3 H$ L9 c+ b: z  X7 U$ f- L+ f4 t;;
将此次交易的记录加入到trade-record-one
$ H5 O- {4 F# J3 [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& p0 s# @( q* ]+ K. hlet note (item 2 trade-record-current )1 t; D9 B0 _4 [7 A& O- d7 z
set trade-record-current/ v, ^* L7 f* P% G
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 |  j1 o9 H5 t- V2 g# Qset trade-record-current
# [7 t8 B5 `/ o8 r6 ^(replace-item 3 trade-record-current note)
5 d5 v, n! e0 j9 R
, P2 b6 u  i- G
9 s  [* N) U0 _8 B3 }2 I  d4 }
ask customer [
, }- h; i$ z8 V' r8 pupdate-local-reputation  B: \# j% z$ ?: S4 T$ {
set trade-record-current
, z& c5 H8 Z/ X, P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 `) |) d9 n- Y  G% y# _  Y
]5 }3 z" L! P6 b2 n# V0 x; c

8 Q7 q; U3 }; F5 ?
; ]1 ]8 }; e; [# C/ N
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& f$ D, O0 V1 f8 o" |
! B' D8 Y7 d% r$ f6 y, L4 C; }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 o( D6 l1 o' Y1 g; W- e4 [* ^
;;
将此次交易的记录加入到customertrade-record-all
6 l2 e* P9 c+ i0 bend, g: U" z) q; q+ w
& H9 h8 u1 h8 {/ ]( b
to update-local-reputation7 ^- J) K2 x! ^. P' h+ @; ^
set [trade-record-one-len] of myself length [trade-record-one] of myself
- C+ b4 S, i8 u6 H* k+ A! i
4 g9 h3 `5 m6 J( l4 U) B7 \% G$ u- I  a. Z( x  K5 @/ q4 ], m" a
;;if [trade-record-one-len] of myself > 3

; \2 I8 Y) j+ E" ~update-neighbor-total7 q+ T! @& U5 z, X
;;
更新邻居节点的数目,在此进行! [7 e! K5 \, B4 s* V! E
let i 3( q1 V6 m( D+ y$ Q2 Y
let sum-time 0
7 [5 E+ W7 _0 c5 swhile[i < [trade-record-one-len] of myself]& @( F, n$ s, D, U& T
[  k) z) U" ]$ M( N* I
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 Z6 [0 l0 t4 m& i
set i
3 X9 c4 k( f. k0 g; W5 {( i + 1)
' g( g0 C/ R# P7 t" \
]) s) s9 |2 ]3 L
let j 3
% S1 J% p: M  Y6 U8 c6 U6 Olet sum-money 0
& @9 v# q. @! j+ n9 P; awhile[j < [trade-record-one-len] of myself]
$ T% b, V" m8 u; B[3 j# u, ]8 q; r3 ~( T1 _( A; I
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)
# K5 N' {: d$ s: `- Bset j
  X# Y9 U- w8 \1 V: b5 p8 S( j + 1)

  }. {1 q% x& j]+ y3 r0 z0 a5 n6 ^! f
let k 3
: K* z: A4 R& q  c' q  r0 N/ Tlet power 0; u6 f% G+ w+ W; z0 \6 H
let local 0' z* w9 ?. _: e* r' a6 Y9 {9 s
while [k <[trade-record-one-len] of myself]! k! l# x! B7 m; M% `' P
[+ r2 H  r; S) w# B, E/ N
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) - ?- }8 o/ b: o* y( S
set k (k + 1)
, n( l  i5 m6 ]8 C$ D]
0 p' l: O+ g7 Bset [local-reputation] of myself (local)6 Z: N2 U% S( R7 f0 Y/ n) X* q0 x
end: u6 J, ~8 \: W  s3 r& O6 R3 F

6 |) ?+ {1 d6 ?7 jto update-neighbor-total
8 c1 i5 Z( u/ k  t+ V; _5 {$ Z; }4 g4 h# h/ `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( N/ d1 `5 f# ]
: w; l3 ?- O) ?8 p$ w+ T8 n
$ N8 P4 i7 P* M8 w6 i! H
end
& x' z* V& A( E# k- c- H3 w! i' V# ?( u0 S4 L
to update-credibility-ijl # O, d2 K6 J7 _' ~! e/ _
) x# W8 O- i2 y4 c* f/ T* |: u
;;
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。
! Y+ g" `7 n; R& u+ j0 l6 S4 vlet l 0
0 h# b- a4 n5 ^2 k2 dwhile[ l < people ]2 I( m9 v# T9 B% \, d; R  F6 B- E4 F
;;
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
; k! l7 U" y5 ], _: `- Q. M8 [[7 T" S9 \/ u$ r$ G. g1 T0 X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 I+ M& x6 l3 D/ z& c9 A4 G1 P
if (trade-record-one-j-l-len > 3); W$ l1 J  b# d; ~( }: s: ^
[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. n- z( }8 y; u
let i 3. l2 [. M+ \$ N, j
let sum-time 0
" v9 B  A: f$ |$ _! e1 s  B! |while[i < trade-record-one-len]
5 _5 c& b2 m- S3 J1 `! G[3 j/ _  k* r# q, q& t" ?; V5 O7 q: y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 S: |2 q+ r- F. C2 e
set i
% y* G, Z6 s& _( i + 1)

; ?) J+ A" t# O* M]2 h7 z4 M& [3 j2 z* O
let credibility-i-j-l 0/ W4 a' u; m+ Q
;;i
评价(jjl的评价)( ^! S3 N6 H6 c3 Q) F
let j 38 \+ n3 y; W, u6 N$ Q% Q5 m7 Y, ~
let k 4
# H. d4 k2 U$ [while[j < trade-record-one-len]
% n1 M4 H+ q2 @- B[
! L' \' a# t/ F9 T, F; 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7 l8 l' w9 R5 f
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)- |% N% X( {5 c2 K2 h
set j4 T) y& @. Z( W& w# Z
( j + 1)
% R! l% d6 z9 I6 P
]9 T6 U5 j" V' @  N& i0 G
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 ))
& x1 p. k" n8 _: N7 z6 u4 s6 n3 D8 b7 u, y* v2 w- F1 f
5 ?; s6 Q( l* e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% `# o! z; [, Y;;
及时更新il的评价质量的评价/ |) E, m' F5 Y! n% p2 D& s
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( A; }6 R3 O% H: J. w8 w
set l (l + 1)
. w5 |8 }/ \" g& l# c3 {]' b5 G8 @) _3 s6 h: A; ^
end
4 ~8 X2 p* ~) @% a
( Z3 e0 s* [2 [! Cto update-credibility-list
' ~- A0 s! |3 b" a0 D! Y1 Rlet i 0
0 a; M1 ]. M- |6 Nwhile[i < people]) {( ]. n& X* X% k9 {: |$ _
[
) h# H8 h  ]% b$ _let j 0! u! q9 K# C/ ^# q& z1 V
let note 0! Y  q* U: j% I) [
let k 02 |: t, \" q- l. M- a, s) p
;;
计作出过评价的邻居节点的数目
; ~+ W" `( H! Y6 R2 D% Kwhile[j < people]9 ~+ P/ Z- a4 j; X
[
7 f5 P+ w( y; F; `( V# R- Qif (item j( [credibility] of turtle (i + 1)) != -1)! P, B6 j. h% K* y% j
;;
判断是否给本turtle的评价质量做出过评价的节点- |# b4 y8 O, P, x, F$ n7 x
[set note (note + item j ([credibility]of turtle (i + 1)))
0 D* ~3 A5 x2 j3 p;;*(exp (-(people - 2)))/(people - 2))]
: S) P; W2 B# b' {
set k (k + 1)/ ^8 T; k( S& Z! [; h6 ]6 ^# Y5 O
]
) `2 H* K# h+ {3 G+ Rset j (j + 1)! _9 ]5 v3 [; V! Z# h/ m8 w; t, f
]
9 Q( F$ [# ?  ~2 d( I0 bset note (note *(exp (- (1 / k)))/ k)" |! Y; T5 _- o; U3 l+ V
set credibility-list (replace-item i credibility-list note)) a/ [% P! |0 r, L; G9 ]# g. [
set i (i + 1)
$ t& @: L" A9 J) n6 L: M9 ^]
* w! h3 A' y6 A) I, \end7 ]- n6 w" F4 z3 X& j' d" c1 J
, G, a2 g2 T, |: ?4 C. c: f8 l
to update-global-reputation-list
* x. z6 j2 }9 E; {( j5 Xlet j 0; y; F( Z1 Z( d/ W3 e1 `5 P* o! C
while[j < people]
4 [+ w' f+ k7 V# k5 f, Z+ i* ?[
$ Q; o) ]1 q# `3 K0 S# ]0 Ylet new 03 o' a1 M+ b! V+ h
;;
暂存新的一个全局声誉
5 ~! i0 V! }3 E" \" A9 _! V& Nlet i 0
0 G9 d4 V/ Z; ilet sum-money 0! q8 n" `; u6 N& P0 p6 T, N
let credibility-money 0
" i6 @7 l0 b% V8 B0 v- w) r/ ^while [i < people]( g# A! e# J. b; \
[7 U% ], X+ G: m& V
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 b: i+ r2 O" _set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ Y1 q8 D, e/ l" U* {
set i (i + 1)
5 ^; Z' z1 v  ?2 E]9 T* S, Y6 e6 d1 ~  m9 K
let k 0
% X7 T+ {3 w) A/ P8 W& w# E  J) ^let new1 0% \6 H5 `( \- j  i0 @
while [k < people]
. |+ E- E' F- D6 |! T+ O2 \9 o; Y[' B: G. ~& ^. x6 M6 E
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)/ r; S2 Z$ s* G3 P
set k (k + 1)
7 E/ X: K8 h) ]2 y]- H, I0 E( F$ M3 v# P0 Y; f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 P4 d7 S$ v+ Aset global-reputation-list (replace-item j global-reputation-list new)
( s- Z5 F- Q( y5 e3 [set j (j + 1)
* P4 r, r: u3 Y6 i; B8 \" v]
6 n" i0 _2 r) i; V: ]: R7 mend
8 x8 U  p$ H/ H2 ?1 Z% `4 x/ [3 y7 g. z, d2 B! s

& ^$ X" r. r" y! x$ `6 H+ A! l/ \' k& ?
to get-color' v2 ]/ p9 `' n* ^( n- h* G

/ H- B+ ^! p& X! {: G) dset color blue

* C+ L% o$ f. w* |) Kend0 K4 P6 t7 b, p7 R( f) J* e

7 v5 h1 r2 y' d1 ]# w; H% Qto poll-class
! X# N! ]: J, X1 }end
% J, R; |* U- L6 C: y
% Q7 h" U. y7 d1 x# h7 ?3 Oto setup-plot1
1 H+ ~; N) B; l! J0 V) n" w& M$ r, C- b/ [" q# I* @  n
set-current-plot "Trends-of-Local-reputation"

% U: _4 |6 c/ Q5 n1 Z1 ]
8 T9 _. a) k2 Yset-plot-x-range 0 xmax

  F  q& C5 Z* S/ i+ `: j' J$ Q1 D" n' t$ y2 B1 X
set-plot-y-range 0.0 ymax

# q2 V' X9 D1 n3 `  I5 h; Yend
4 R. t& k7 }- u' c
) v6 |% q  t& |8 r$ Pto setup-plot21 S+ q& A) L/ [  F. S" j

) F( L: X0 M. Bset-current-plot "Trends-of-global-reputation"
. w" N$ J2 H: W9 d$ _
- |; [/ `" p8 H5 u, s/ z' ~* T
set-plot-x-range 0 xmax

0 t& _& p: n' m/ l
$ O; x( e1 w& h- G* ]set-plot-y-range 0.0 ymax
( a5 E/ S0 A/ o& V  k6 a3 Y2 R8 K/ Y
end
% B& H5 G1 a" C/ U7 N7 S5 B( H, u
to setup-plot33 \; P# a! _/ L0 g1 O

8 }. u8 f0 i! u6 D1 Q- d+ `set-current-plot "Trends-of-credibility"
, G! P8 n% n% o- q: S- G5 u1 x

2 Z. U7 H3 {, ^7 X: Y1 ^! S9 V3 Fset-plot-x-range 0 xmax
! X" @, _2 _0 G
3 u7 R0 J2 H) {' |
set-plot-y-range 0.0 ymax

1 R* ?& D5 w: o9 j9 eend
+ ~4 P7 U  z/ `+ @/ I' m. g- @
( k, d; B5 v. q, E; p; o  m6 G* Dto do-plots7 S$ y9 ^1 i; B" }
set-current-plot "Trends-of-Local-reputation") k' P1 R6 q, x$ F0 J9 \
set-current-plot-pen "Honest service"5 W' a6 W- D# p# {" I" m! i! H, k' t
end
' H" W4 }4 W; _/ ]+ ]: X2 W5 k+ q1 K8 c( D
[ 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.
4 H1 u9 i2 M0 h$ D& ?* K3 a' x7 A9 Z. E' E
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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