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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:9 c1 e; h  r3 ?( I
to do-business - E6 }) Z4 ~( |, j* u9 Z" p" }
rt random 360
: q$ O  d/ g% _, S fd 1( A, i$ R4 s( [5 Z4 @4 C, m8 b
ifelse(other turtles-here != nobody)[
- ]; G7 |$ i  `* ^  A) D. N* B- R   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.
! p) D0 {0 U& v. T" K2 E5 A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 p/ {/ Q* w- w( y9 e! g; ]  {( a   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* N$ A; L& X2 J   set [trade-record-one-len] of self length [trade-record-one] of self/ g3 C: D2 t$ }7 d) O
   set trade-record-current( list (timer) (random money-upper-limit))$ Q! {4 `% e7 e
+ j0 v' H. Z6 P2 N2 @  `0 u6 ^
问题的提示如下:
  |: n. J2 H" U5 Q  @/ A! L
3 f" b3 D; M* X% E  `$ \0 a/ `error while turtle 50 running OF in procedure DO-BUSINESS
( M4 |) e8 u% ~8 @6 k, z' ~  called by procedure GO# t8 w. `6 c0 |" |7 ?' p8 [, X
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ ~- Y( S) [9 c, [
(halted running of go)
& E$ ]/ n" ]- U7 x, d, n+ H8 l
. N- n# B# R* l3 T1 [1 W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~~
3 ^) Z) l0 c, |7 O0 P" T8 y4 m9 `5 E6 x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
7 z' p# F- c' `9 c' F, rglobals[: z2 ]: M: t$ o: M4 y, A
xmax
) g; O+ F& Y" ~ymax4 ~- r1 N) Q2 O' c. i1 p( q8 ?0 t
global-reputation-list
8 M5 B2 @+ Q  ~0 p
( ^" U1 p& |8 t. n: j% Y% h% x;;
每一个turtle的全局声誉都存在此LIST1 Y! N  ^# B4 B
credibility-list
1 a9 B% h7 g3 f: B! g;;
每一个turtle的评价可信度
; K0 x4 X& m) Z; ]# |honest-service' S  D$ c! m- c' b0 P$ r" _( D
unhonest-service
  ]. M6 h( b4 Eoscillation
/ Z: u- D# ?8 h  x! xrand-dynamic
0 o# `! S! A+ F! n. U]
9 [& k$ y. F3 h8 P$ S; z3 f
, a/ ~+ H+ I- ?0 Q/ ?turtles-own[2 o* ^& w6 b# j1 H  k3 u8 q8 j
trade-record-all- B  g8 S/ r; ?8 y7 N9 i
;;a list of lists,
trade-record-one组成
6 I; E) ^$ G, X8 {( m5 t% Atrade-record-one; B. [  g  Z3 I( L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, h, K2 y+ ^2 L) O0 p8 H
  O. ]' e9 \( s( n;;[
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]]
) J* R% m0 R% b" M2 btrade-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]
8 R: j' w- ^  f; _  t5 I; y' ~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
1 h  H, b# O7 uneighbor-total
% w. _; Y) @9 U' o  T;;
记录该turtle的邻居节点的数目: h  t( Z$ m9 i* V; H  m
trade-time
6 s' K( _% v7 V6 q6 z5 y" E;;
当前发生交易的turtle的交易时间
9 K6 J$ ]( d# u. E6 {* |) fappraise-give
( N" g, X" C9 a& |2 j, M' };;
当前发生交易时给出的评价
: G  @+ p" s! a- eappraise-receive
! k: x! S9 L" C7 G- C6 K;;
当前发生交易时收到的评价& l9 C( b/ C# {+ M  ]# l# _
appraise-time; S0 r: T$ Y9 b3 @( p( b
;;
当前发生交易时的评价时间3 \" x- x% k8 O$ G9 c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 D7 s% N5 [& N  t  f$ _
trade-times-total
5 |' o, S; t1 Z# D) g  b$ H3 v;;
与当前turtle的交易总次数/ \- r* W. Y4 ^& e
trade-money-total
! e6 ~4 Q  v+ H;;
与当前turtle的交易总金额' S+ t. l8 P: ]& U( ?" `
local-reputation
/ H: p' Q$ e3 m/ H+ k4 ?. _global-reputation! e' _% X# j, U7 H( ]# W
credibility9 |: s7 a/ L+ ?& N
;;
评价可信度,每次交易后都需要更新
$ G& m- Y& j: u8 G0 C2 Ccredibility-all& s* ^$ @+ Z+ z# E+ \; W* G# X
;;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
8 M; f/ r" L5 v- f/ C& m+ w0 {0 Y9 S- P! c
;;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  c4 b0 ^) k5 d: X8 n3 r
credibility-one0 j! y! r5 v& B$ j! y* T
;;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people7 s2 j' f5 ~/ z2 ]# n# a: n
global-proportion
) J) ~' B' g" z2 u- Lcustomer: I! H4 h4 g$ A9 H
customer-no3 j- s* d' T3 v: G9 _
trust-ok& j1 _7 B2 f2 L0 N) N. j* L' w
trade-record-one-len;;trade-record-one的长度+ D( i6 x9 x' n# o; y& u
]( L/ }* y3 r4 [+ e: `1 |
. Z5 {' u2 _& h* \! [
;;setup procedure
1 W7 g" t4 C; ?; M6 [$ b) o$ |4 N, j
to setup
. K$ {1 f+ H/ m8 r2 g8 H5 Z" E9 J4 }, E% _/ M
ca

: M0 A& H! o' x
: o5 s& h- s# {+ rinitialize-settings

  k/ `9 e2 c" k7 I. d$ f8 J3 m& a, q
crt people [setup-turtles]
' ?9 |+ m0 {+ g# E+ J
3 {1 _$ G8 H( _0 l- g7 s4 W$ a9 Y
reset-timer

& Z. e% s* \! L3 S6 Q
, t0 g$ b/ e1 N' U8 J% l6 o# Bpoll-class
3 _8 {8 J4 [  T4 F9 J9 G
7 e+ }7 b3 K% P  g! B5 p, k9 Q; h2 l
setup-plots
4 p, g6 V6 }3 ^* y; ~
- V1 N+ s$ V% y; }  b& s" L
do-plots
- H* w3 B" q- F/ L) A
end
$ T* ~# @" \; w/ R$ q0 p
) }/ `: q0 R- ?' M4 ?3 y" \7 T9 Pto initialize-settings
3 w% r9 Y& _8 k( Z8 p5 f! z6 [5 @+ B; B! I* v6 z+ N) i( e# \3 h* }
set global-reputation-list []
9 g9 x4 G9 }% w" |3 U

3 Q( {- O, {3 _! N2 C: S2 Pset credibility-list n-values people [0.5]

# d. A' Z7 j$ h" P1 o  `
& Q% {9 p# Q9 z. k0 f+ g9 Aset honest-service 0

" a8 t& \( e! v' A: b* I5 S, _
8 h: |) ~. f, ~7 g4 y, o8 ?3 T" oset unhonest-service 0

: c) u; H( @  ?& [) ]5 X+ a8 V. w9 _1 t
% I" ~. U/ E) [# V$ G6 A. ^set oscillation 0

7 U& S; s, v8 A; u8 z- v0 _
, x' n& q; n/ O5 ^5 Z( T; Vset rand-dynamic 0

  H/ Y3 I6 I3 V" S" o. s. H7 n% mend
! R8 @  V& {1 _0 v4 H' Z
* e3 @- V! G6 ~- W5 \to setup-turtles 7 c' R( f; Q2 V" ~- M5 r+ {
set shape "person") @. `  j. N. z$ q3 j! a
setxy random-xcor random-ycor5 [/ _! Y8 P2 p/ Z' N2 T! q: e
set trade-record-one []. w8 N; Q5 }" M) X
! ]% X, R2 D; o4 J- F
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 b3 r- I$ ]. n4 V1 u7 X2 ~

/ V" U7 C3 _" g' m* Y2 Qset trade-record-current []
# m7 Q0 D& `  ]! G* _7 Y7 X' a9 p) n6 aset credibility-receive []9 \- l& u- y4 p8 c  B) H. |
set local-reputation 0.52 h! M2 s! l+ Q1 |2 J
set neighbor-total 04 G9 t% m. N) Q9 R
set trade-times-total 0
) |6 L* d" d6 A9 {, n$ X7 }set trade-money-total 0& [( ], `! B/ c7 N+ }
set customer nobody% p' i. J% h# R: s; j
set credibility-all n-values people [creat-credibility]
% x3 D% n, G/ cset credibility n-values people [-1]4 {, D, u/ H7 p8 G8 ]; ]
get-color- d8 s" d% m( Y- j

+ m  E3 Z6 E0 b# v) Gend# ?2 R8 t7 F9 [/ N7 y; \1 x) z/ w
* |# r7 Q1 x9 [4 E
to-report creat-credibility! r# a8 o4 h$ _( M1 d& X
report n-values people [0.5]
/ L. M; n& |4 m; l: a2 H* B# Lend
- R0 f8 k- w# @$ d6 N8 h- p$ k8 _
to setup-plots
3 r- u: k9 C: \0 R" B& }3 T  V# V3 C/ g6 f$ g9 k6 L/ k% `
set xmax 30
0 v6 X+ _* b- h; k
, O, y, K' E( H/ p) R
set ymax 1.0
( C0 b8 Y: S  F$ r
  C) V% s- w8 @7 E) ]
clear-all-plots
! l  z* `2 k& Z* b3 g2 e

/ I8 i6 l1 H: e" z1 P7 g7 Ksetup-plot1
! q9 m7 M  c& m

' s( `# K$ N7 d3 |- g+ Jsetup-plot2
( \/ D. N7 Y) ?3 _

6 Z1 l) O+ a1 g' R+ q: d. L% Ksetup-plot3
2 k% x) d4 F& I& \; C4 c. w
end( W- @, q9 m( l, O
& ?" g* I  R" L4 Q
;;run time procedures
$ p' U4 J- v/ s  h) t0 k
3 x: \' i& |+ [& F  R! \( \to go
, ?+ o. b# W9 H- y7 A' Y# K
+ o+ ^: q- u* B7 ~! Vask turtles [do-business]

" u: ?" A! o7 t+ S' ?5 }% send6 o/ }7 p, W: Y" J. b

3 [+ O( e! g2 p5 r) D0 wto do-business
$ h. v% @# H8 l) F

! f4 H9 ^  A+ C/ V3 D  P0 m6 P2 V1 u
rt random 360
1 M  y& C. v2 ^! E& J+ g
; i! p+ f1 ~0 }$ A
fd 1

5 v0 I4 h; ^& @3 U! }; f
" P- Y* m! V$ Aifelse(other turtles-here != nobody)[

/ g# s3 W$ r7 V8 J! g9 B
$ j+ h3 \! S0 Z7 V6 kset customer one-of other turtles-here

$ i# x' N! E2 L
; d! H3 ^$ I' C% u5 n;; set [customer] of customer myself

# |& v& U$ w2 V) A6 O
! h' O0 S. H: w3 `set [trade-record-one] of self item (([who] of customer) - 1)6 u) w: b6 W4 l' |
[trade-record-all]of self5 \7 W8 }# X8 K, R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- ~2 W( |: }9 Z
; q9 u, P9 e7 H; @& ?; C  m6 Q
set [trade-record-one] of customer item (([who] of self) - 1)
! K* E/ j' M2 O[trade-record-all]of customer
. ~( @2 L* g' i/ }# @9 A

% Y& s* `6 c, m/ jset [trade-record-one-len] of self length [trade-record-one] of self
+ N% D) W, h6 ^: ^& e6 g
7 ^- C( b/ s0 w: g
set trade-record-current( list (timer) (random money-upper-limit))
1 R0 J: C; n8 y( M( d: g6 `
' I* I% p1 K1 [  k
ask self [do-trust]
7 m- W* ~; \- F0 U5 L( Y;;
先求ij的信任度
! K8 C5 W- W1 s9 e; H7 X
$ U; j- E: z4 D* i9 F0 Nif ([trust-ok] of self)
% L3 b7 E# o/ v2 a+ l( B;;
根据ij的信任度来决定是否与j进行交易[
, P, k& m2 Z: J0 sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 [( G1 F4 `! q  B, s9 I$ `

2 S8 J$ t& I; @$ h7 u, h[

; ]% w! v% u6 H' R. Y
3 r* W) Q2 |& }7 l( y! p2 ydo-trade
9 |  q  Z8 f, V4 U1 t: U" f, \

3 K& p  Y+ K; w* Supdate-credibility-ijl
: e+ _, h& d$ v0 d5 q# [% u

9 W% _2 w! ^6 ^' rupdate-credibility-list  ^/ R  f9 r# q" V4 b+ Z& {
+ Q& \* l, u& m/ e

- `5 F3 |4 H. g7 A3 e$ Wupdate-global-reputation-list
% }( E, \: u" l: \% Z; G

7 u9 k$ j3 W- D+ npoll-class

% Q8 A/ |0 t" }2 i2 X5 Y# h
2 {& I# Y$ {" `% R) lget-color

8 K( Q( U- R2 j! l- R
7 L1 n2 g. E: `: B0 g8 f* J2 O4 X]]
3 l! C% T' C0 E" V9 F" i* ?# a' A& ?! v
;;
如果所得的信任度满足条件,则进行交易. y. r& \; r0 ~, \4 p4 a1 \4 g3 U! c
2 f  f! c& C6 y, D
[
7 y5 C5 t+ i8 k
  O, c  p- w, ^+ D: {. ]" A9 w1 K
rt random 360
% O  ^1 y1 E) y8 p1 Q+ P
5 L( C9 o9 M6 Z. a/ v: [: B5 E
fd 1
. D6 F; v# ^, e3 L' R
' p4 {2 Q# C6 G$ @  C0 Z; ]
]

8 m6 t8 b2 S% E- c
- |  ^# K1 u9 F, f8 Dend
) A( U  k: S" B. q
) N8 l" V4 B) \% T. @& Q7 e
to do-trust
  _- B+ M: c2 ]set trust-ok False" l* f+ Y2 J+ _6 Y
0 O' J# ?. o& X* L4 o: e
7 \8 y) ^* C( T) A' l/ A, x" z0 O
let max-trade-times 0
! a+ K* F, r2 I  }( U% |' ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 t& U5 j  Z5 u: jlet max-trade-money 0  b6 g0 b- ?! _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; S% a: r/ ]( g( A. y: o7 ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): j5 {% l& D0 e( |  S5 t
0 h. U6 b! O; I7 Y! n

1 M+ t. q1 b! }. c* W/ Yget-global-proportion6 h7 n: v  I0 \
let trust-value
5 U% F+ Z6 p! `' c, flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
& i0 `- W* A: f4 E' U3 f
if(trust-value > trade-trust-value)0 g* t+ V: v8 F# B+ K* a
[set trust-ok true]
" s) C2 U2 f* a5 l. hend
4 B8 }) ~' T8 O! C4 r+ b9 k: Z' J  Q  f, ^( \
to get-global-proportion
  |- `9 T( I/ i- P. A$ C+ {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( Y2 s7 q9 d& F3 Z# l
[set global-proportion 0]
. D- {$ {: `. x# g' [- H! W[let i 0& k  {2 c$ y  D8 j
let sum-money 0; v5 v5 y2 B: f5 q! E; [5 Z
while[ i < people]3 L5 t7 f- l8 T, Q- g
[' C8 w3 d. G7 k
if( length (item i
; z+ y5 u* a, r4 z1 V[trade-record-all] of customer) > 3 )
0 L& M7 p4 R+ r
[
) q% e; ^& x$ [$ jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 W- k# d) x+ `
]
; e0 S) y& ]# s' }4 c]
) C" ^1 K3 w2 v: Q$ }let j 02 T% k+ P0 T$ |  a( i: A
let note 05 E/ j+ F( V9 P( r1 r" H+ z
while[ j < people]
& u; _) b6 w) h3 g: o" |[( m1 Q& N0 ~6 d9 o# b  L4 m
if( length (item i; C2 n; e' i8 J- ]' g1 ^
[trade-record-all] of customer) > 3 )
: X6 ]4 k! _2 h# R5 O3 {/ K( _$ F
[
% v/ N3 h, V/ D/ M" R% A$ rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# }! _. o0 T7 f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 D) l" C1 U2 P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& g$ A: Z( \' Y& A/ }* x# s
]
" f5 C, v$ F( J$ J]
$ X8 c$ v: w( v9 @" I& gset global-proportion note, y) ~' ?, w7 i, ~
]( j8 D4 S5 O5 p
end
6 W. V% M; t+ p5 T: d. d: @, ?' N6 {% j6 ?; |
to do-trade* v2 ~0 X  a. F% J5 C  o
;;
这个过程实际上是给双方作出评价的过程
' z7 k8 s3 h& o+ Y1 p* B, G% O+ hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; f5 ^5 r) _2 I% k5 ]" |- z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 {; j: C; A3 e5 a2 zset trade-record-current lput(timer) trade-record-current  Y3 \) K$ a* Q
;;
评价时间
! k& T7 S6 W" X; U3 d( ^5 M% ]: hask myself [0 |+ F+ N: p6 Z# i  w4 Y  K4 _
update-local-reputation
% T) k- W+ U) Hset trade-record-current lput([local-reputation] of myself) trade-record-current# k" f5 j( y% W7 @5 w4 }
]
1 E3 E( P) N& j0 Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! i9 e  d7 H3 {% d;;
将此次交易的记录加入到trade-record-one' t! l* s1 ?$ o) e0 t3 f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), Z" J- C% a6 a+ e: H5 U3 o
let note (item 2 trade-record-current ); L) `, {; e2 k/ e
set trade-record-current
" ~# [/ U) Z& O: U% H" f(replace-item 2 trade-record-current (item 3 trade-record-current))

1 G% g; m" }0 ?6 n% V# D; ?2 g3 J2 Eset trade-record-current: M/ W6 s, B9 v6 n
(replace-item 3 trade-record-current note)
  Y0 z% h$ x! V, C+ l  s$ ^. N5 ^: Z2 P9 ^! Y" m
2 ?3 d5 ]+ }* ?, O6 }$ Q7 U! n
ask customer [
7 P1 P, f! l% G# h  k/ Rupdate-local-reputation) T1 M  C) X* m3 H8 E1 Y% H
set trade-record-current: K6 H6 P  q8 N6 d* M* ?
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- P6 ?' ]* b, |- I! D
]' d0 t" @5 n2 P' f, A5 l
- h- O" A# u* i

6 B' U/ z* q5 o9 }0 s/ ]set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% l4 S+ e$ ~% {. A3 d! _
) L3 [$ u- ]8 @( {4 S9 X4 w  Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 M' [4 J5 ~! G; k7 J8 C$ a, D, _
;;
将此次交易的记录加入到customertrade-record-all+ x) K1 A. g8 d4 f# S6 _) n* v
end/ T5 b, u, j& _  Z0 H, O

0 E; s. [3 Q# }0 Lto update-local-reputation1 s' v6 A& ]# _2 Q$ L
set [trade-record-one-len] of myself length [trade-record-one] of myself
2 N: T7 J$ t7 E  @( Q
8 h( N6 k( g0 E, d/ D
4 a9 {/ R! P; [2 h  e  u/ X;;if [trade-record-one-len] of myself > 3

& {, W- z2 n* T5 F$ }update-neighbor-total
: V7 B3 }' `7 I: G" B;;
更新邻居节点的数目,在此进行7 j1 F5 `& |1 y" F" z
let i 3
7 Q; o+ I* `3 {* Ylet sum-time 08 w- X% s! s/ n) Z* i; Y% l9 W+ ]
while[i < [trade-record-one-len] of myself]( b$ F* b% J1 W: y5 V; R
[, ~" O- S% P$ `4 E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, m% F) b' D& ^9 Oset i
# h. g. s6 U% s6 N4 C4 f( i + 1)

3 D$ u1 c0 f: L+ y$ Z]/ r/ O9 K: `$ u/ ?2 d* [% u
let j 3
  p8 m  |! `0 j5 {/ {/ p8 clet sum-money 0% u/ R0 r6 [' `- P) |; A& t( }
while[j < [trade-record-one-len] of myself]
* ^1 W5 ~! i& Z4 {+ \9 L& B[
) H; H7 w1 R- ]" _/ o$ wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ k0 Y3 f+ [$ n. k2 m% qset j0 k  J+ b  K3 H& I, n( s" W9 _
( j + 1)

5 ?- n9 O( K4 ]% e) T3 e" x]
  W4 k+ D- M' n, \6 |0 flet k 3
/ v# ]& i& N& Q) hlet power 0
9 p- x1 M9 O% Q. {4 Elet local 0* C  A+ ^; w: I; P+ E
while [k <[trade-record-one-len] of myself]; n# D  a: o: [5 B5 z
[
9 t; i' J$ W: L6 O: C9 Vset 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)
2 e  P* F" B. T. n- }4 i7 O% fset k (k + 1). ]" ]2 U" `/ f! {+ l; g
]
5 U( N4 F6 g' n) [set [local-reputation] of myself (local)2 v3 _3 `1 D7 W+ z0 F
end" |/ x; V# ^9 K4 K9 p) l3 B
9 u' [6 b! C) z- _& i- X" X5 V/ a
to update-neighbor-total1 V: ?6 J4 |' v1 `0 S8 W

1 n6 [7 a/ O: Z6 w& Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 K1 e4 r( @% Q+ l4 {  ^5 {% p- P
# T+ F# P! O& O: Z# _
& {3 k8 w2 a$ ^8 Z' C/ X
end/ |4 _2 P7 \$ c2 X7 @$ a; A
: p0 v2 z% P, s+ H, s. `( k
to update-credibility-ijl
3 b& P3 d2 s! N! a' A* D( b: R. `" j$ m+ y; \4 D
;;
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。; P5 Y( M- L2 |( w$ B
let l 06 k8 f8 i5 u# u  i4 e# r2 s8 j
while[ l < people ]3 A1 J6 f5 `; M" f$ Z+ t
;;
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+ v  X' B# s+ D" S! y/ Y  r5 V
[
9 j) U( i) }) t) }# olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 d& M/ V: ^; x* h6 y, a  }6 v8 lif (trade-record-one-j-l-len > 3)9 G5 _4 i0 Y' B8 h; V# B
[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
5 ], \( ^; Z% \1 @5 H% D3 olet i 33 ~3 M+ e& B+ v, A% b
let sum-time 0
3 C$ D/ U1 y4 _- u/ A0 l# ywhile[i < trade-record-one-len]. }! O6 [( t6 Y: `
[
! Y0 ]( ~" D+ d& C( w9 Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* o. m& |( j1 g- t* x+ z! a7 Bset i0 w. g  u, A5 S1 F& F
( i + 1)

6 T. z' X! j+ T]! _2 K" K! L. T8 x
let credibility-i-j-l 0' _' l9 ~. B3 q: \) Z& |
;;i
评价(jjl的评价)
* t6 E$ m7 `& ]/ h: q# G  wlet j 3  F4 N' f% V: s
let k 4& b3 `# H# j# h9 e9 R
while[j < trade-record-one-len]8 ?# N* f$ _) L
[
& P2 F1 x5 i1 C; ^/ [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
0 t$ `, X% p) S: ?& Yset 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)
& K6 ]. k1 ], E6 I3 S$ dset j
' r% |- ?! l  R# H# b% i1 s( j + 1)

  \# Y: X$ V7 \]
5 r$ u9 S3 q; k2 r/ k0 Z. Y5 Jset [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 ))
( F4 R: P3 q( p4 X! Z/ Z3 n
# ]) l7 t7 {  {5 Z/ m* N9 y

! q9 v7 G( _7 a$ R+ X0 q0 i1 Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! E$ B2 l6 z  C& L. r/ s; _;;
及时更新il的评价质量的评价# {  S6 A0 P4 u" y5 p( X
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ |5 _, ?/ m7 mset l (l + 1)
) u" d3 ?; O/ x' H+ }2 I% w]% b9 W# k$ A& v, B- W
end% Y0 {2 T9 b& @  c. ~) Q2 y* |

1 ^3 B9 E' @8 n: L6 Yto update-credibility-list9 Y5 _9 ]! H9 P7 o5 N. m; l2 N
let i 09 R/ T& {+ K" J- b( ~6 S
while[i < people], Y' u5 z; ]) i3 V) ?
[
4 \' r3 {& M! ylet j 0
- y9 I/ K) D0 b' g9 {: B( qlet note 0
; S* }9 J$ _/ Olet k 0
9 z. E: @" Z, K8 E;;
计作出过评价的邻居节点的数目5 o4 t0 O8 }& [7 g, t9 ?0 m  ^& E
while[j < people]
- c6 y! F0 ^! y" D+ f) l[
7 e: l- |  U/ R) V! ~! ^if (item j( [credibility] of turtle (i + 1)) != -1)) ?2 i2 C2 S7 K, N
;;
判断是否给本turtle的评价质量做出过评价的节点& ]3 Z3 f7 T# c* }
[set note (note + item j ([credibility]of turtle (i + 1)))
  D6 I' d$ A1 L! S! Y- |4 H* c;;*(exp (-(people - 2)))/(people - 2))]
1 {" ^0 C7 S# m8 z- t" O+ b" W( v
set k (k + 1)$ k) v8 n' c9 U) {6 }
]! E( M) {! _* B" k5 U/ J
set j (j + 1)
" b! K4 E, u" N% C* D& G]& E8 A& b3 z+ U; ?4 l
set note (note *(exp (- (1 / k)))/ k)
' ]  Z/ L5 f% e9 \) B9 q* B4 Mset credibility-list (replace-item i credibility-list note)
+ {8 m# u% g& P, G/ ^, ~) j( Zset i (i + 1)  g; U: d; V" Y/ O7 L0 j
]
+ _$ M- g7 ~5 Y# K" Q. Wend  {3 b+ ~6 P' n8 Q0 Z4 r& t

( J- i0 c* J/ r2 h' z* Kto update-global-reputation-list6 e' ]3 N, P: M1 ^& A
let j 0
- f3 G# n+ t% S0 X$ k. ?1 Swhile[j < people]3 E! w. ]% X7 v7 d5 }  n
[
  _8 e! ^# t1 _6 o! o$ slet new 0
0 B; M6 ]. w+ p, K9 \' ];;
暂存新的一个全局声誉
6 F6 x; R  |8 \/ z. s* m; blet i 0# [  }4 y# S: M/ h; P
let sum-money 0
& e  f, |6 T, i2 u4 G9 rlet credibility-money 0
, k% ~7 ~4 x8 g* |) {8 |while [i < people]; ^1 V  r  E7 j1 S0 w$ V5 i' j% q
[' Y' v- y9 Z+ K0 d! I; u# m3 x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! ?4 U! x' o& I  @) xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ @; ~1 x: z5 f5 Tset i (i + 1)6 K9 P# T* M! f  T+ s
]6 \  s( a6 M3 G; ^, H( D, X# N
let k 0/ d; _7 z3 P' D  F* \1 a' t  C/ d/ k  Y
let new1 0
+ r, C6 j: l( F7 cwhile [k < people]
' f; w: n7 H% D8 @" h& z$ g[" J# ~' H5 A4 U4 g; M
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)! x/ X  A; p. i$ z- I
set k (k + 1)
! M, V9 S  K- h* U5 ?6 `8 P# B- K]
& |$ F7 W! U# wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . w7 t8 p4 S/ _9 \4 d9 p
set global-reputation-list (replace-item j global-reputation-list new)" i" l$ o$ W6 {8 }8 ]# P8 O* B5 `
set j (j + 1)
) A! @( M7 o# ~, F2 m) j! S7 n]
2 I3 y: [- x- x$ e  |end; M- ]9 S0 Q4 M2 L6 z! c
! u8 m1 m! r/ a1 Y: s$ t
6 Z$ c# ~+ l) I8 f& `' W

% E, t: _: b$ W4 z' e# ~to get-color
, Q( ?& `5 @  w: `  u. c5 x6 n
6 E7 X/ c5 g0 r; z) C7 C* ]# Qset color blue
/ S( {# X0 g& Y  D1 h7 ^
end
1 j0 Q0 O) z! s4 [' o0 x% \% p+ B8 ^+ \7 O8 E
to poll-class
) d; ?* B9 f4 x6 Fend
5 U: y# O  m9 @4 U; E" L
9 [5 e  [" Q1 lto setup-plot13 H' y8 y- x- V( q5 N
1 o3 T7 G. a% y
set-current-plot "Trends-of-Local-reputation"

% h! j$ g  v& _: T  q
& \2 N" l8 N0 `& i# Z5 tset-plot-x-range 0 xmax
1 ^# v+ e$ s9 {$ t* \" G$ [% S
7 I( S' \  J4 U& M5 d7 G
set-plot-y-range 0.0 ymax

+ S* @# M9 `- M" w, I2 L7 kend
" h% Y1 d5 y( T, f% m+ ~- f9 H' w. G* O
to setup-plot2$ v$ @. f4 {% B% Q( M! }, s8 v" H
2 J( O2 K0 W0 ]% o. I3 x1 M0 |* }
set-current-plot "Trends-of-global-reputation"
% [1 ]8 p" U9 L+ L5 ?" u, @5 I9 a: \" r

6 Z7 |+ S7 G9 @! \set-plot-x-range 0 xmax

3 V8 Z8 J# o/ h
  l4 d7 A/ W3 @4 s' \: Wset-plot-y-range 0.0 ymax
: I) m3 B3 H2 E: W: v2 i6 o1 Z
end
+ N6 r8 |  h# {2 w; s7 B
& d% L( Z# j" I( C- qto setup-plot3; _( s4 d4 F& I) V
2 {; r. X( P* m$ D" V: _0 A
set-current-plot "Trends-of-credibility"

4 W" g3 V) `1 L/ p' {# e& {4 c4 y. r  u3 e- h
set-plot-x-range 0 xmax

* D$ [4 ]8 O5 S% z5 H3 _$ z* _8 r: n% F' Y
set-plot-y-range 0.0 ymax
2 H8 R5 m% I' c$ Y2 c8 h
end  m! w9 b  c% R# _# n' q+ _
5 s0 w  [  o0 C% u% ]
to do-plots
2 j- Q3 C5 d6 B3 q; F: Mset-current-plot "Trends-of-Local-reputation"$ U& R' _2 T: Z1 p( q( c" n8 y! P0 M
set-current-plot-pen "Honest service"% i" H# w) O* O( T- U/ P
end
; C# a9 f' u3 F2 Y# H0 J; }) ~) I/ j+ \; X% y. j
[ 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.
9 O5 I* Z- f1 ^6 |# t8 I( N; t' O. J# O% I
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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